How to dispose TcpListener's holding port?

.NET Framework Networking and Communication

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    - nested classes with arrays not working?? Public Class ThreePartOffer Public EnergyOfferCurve As EOC() Public Class EOC Public startTime As DateTime Public endTime As DateTime Public curveStyle As String Public incExcFlag As String Public curvedata As CD() ' Public Class CD Public xvalue As Double Public y1value As Double End Class End Class End Class I basically have the above code. I am getting errors due to the highlighted lines. I tried the declarations as Public EnergyOfferCurve(10) As EOC and Public curvedata(10) As CD as well, but neither way seems to work. Am I declaring them wrong Any suggestions Thank you. Brent Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - How to Get Networks and Network Members Hello, How do you get all of the Networks that you are connected to and all of the members connected to the network(s) you are connected to Thanks. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - About sending email problem (No received email from my email account) Hello I wrote the following email program for sending email. However after running the following email program, I still could not see that received email from my email account. Where is the problem Please help. John Wen 5 - July - 07 ===================================================== using System; using System.Net.Mail; public class myemail_send { public static void Main(string[] args) { try { MailAddress maFrm = new MailAddress("johnwen604@yahoo.com.hk",args[0],System.Text.Encoding.UTF8); MailAddress maTo = new MailAddress("johnwen604@yahoo.com.hk"); MailMessage message = new MailMessage(maFrm, maTo); message.Subject = "Hi how are u "; message.Body = "hi I am a boy and you are a girl. I hope you are well. Bye! Bye!"; SmtpClient client = new SmtpClient(args[1]); client.Send(message); } catch (IndexOutOfRangeException e) { Console.WriteLine("Usage : send <sender name> <SMTP Server>"); } } } ================================================================= Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Exception: DataTable internal index is corrupted: '5'. on ... Hi, I have a problem with bindingsource component in framework 2.0. I have a combobox bound to a bindingsource which is also bound to a dataset with 2 related tables and a datagridview bound to the same bindingsource. What I want to do is : When the selectedindex property of my combobox changes, the corresponding cell value must be changed in the datagridview. But although the value in bindingsource changes, datagridview does not display the new value. That value is displayed after I move the mouse over that cell and make it invalidate its region manually. Another error I caught is the one that you can see as the subject of my post. I do not know why i have that message when I try to change the property of ((DataRowView)mybindingsource.Current)["MyProperty"] programmatically. I will be grateful if someone can help me. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - serializing IMethodCallMessage with SoapFormatter returns method not supported exception Hello: I am trying to soap-serialize an IMethodCallMessage intercepted with a custom proxy to a request stream of a HttpWebRequest. (In the context of my PhD on adaptable middleware) But i get an exception "method not supported" Serializing a simple string in stead of the IMethodCallMessage is no problem. Am I missing something "Use the SoapChannel" won't help me out, I really need to do it manually :) the code: //called from IMessage invoke(IMessage) internal object HttpCall( IMethodCallMessage imcm) { HttpWebRequest webrequest = HttpWebRequest .Create( "http://localhost:8080/foo/" ) as HttpWebRequest ; webrequest.Method = "POST" ; webrequest.ContentType = "application/x-www-form-urlencoded" ; webrequest.SendChunked = true ; Stream requeststream = webrequest.GetRequestStream(); SoapFormatter sf = new SoapFormatter (); sf.Serialize(requeststream, imcm); //EXCEPTION: method not supported requeststream.Flush(); requeststream.Close(); //... } Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Application Control Hi, I got 3 questions: 1. Is there a way to detect installed application on the client system remotely 2. Is there a way to launch the installed application on the client system remotely 3. Is there a way to detect and determine what application is currently being opened on the system locally For the 1st and 2nd, I'm thinking of sending the byte consist of the application list through network, but is there any other ways around that is more convinience Thanks in advance. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - FAXCOMEXLib API and Faxing PDFs with Reader 8.0 Installed Adobe seems to have changed their command line interface between Reader 7.0 and 8.0. Faxing a PDF via the MS Fax API works correctly with Reader 6 or 7 installed. However, after installing Reader 8, the PDF is sent to the user's default printer, regardless of the fax device you try to point to. I have manually tested the command line interface with Reader 7 and Reader 8 to confirm that the same call that works with 7 does not work with 8. I don't know who should be addressing this problem, Microsoft or Adobe. Any thoughts Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - 64bit Office Interop ... Hi all I have some trouble with Office (Excel) Interop integration ... I have a x64 Windows Server System. I have some applications and they are written in C# 2005 and some of them use excel Interop. The applications wont run the Interop.Excel Code on this system. Error message: Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154. I guess I need a 64bit Interop.Excel.dll. Am I right If yes, where do I find it Thanks for any comments! Best regards Frank Uray Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Error using System.Configuration.NameValueSectionHandler I’am using the System.Configuration.NameValueSectionHandler to read a key value pair from the web.config file. The code works perfect fine on our offshore environment, but it has failed on our onsite environment. The web.config has the following entries < configSections > < section name = " Twin " type = " System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 " /> </ configSections > < Twin > < add key = " Pair1 " value = " Value1 " /> < add key = " Pair2 " value = " Value2 " /> </ Twin > The Error message generated is An error occurred creating the configuration section handler for TwinCOBAM: Could not load type 'System.Configuration.NameValueSectionHandler' from assembly 'System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. I’ve tried the following combinations of the Section entry, I picked up the version number; the public token number from the GAC <section name="Twin" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/> <section name="Twin" type="System.Configuration.NameValueSectionHandler, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/> After some googling, there are some varied findings; some say that it’s a bug in the .net framework. For some it works without even specifying the version numbers and public token keys. I haven’t been able to pin down the source of this problem. Please help. -Ben Salins Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Auto Update on Windows Service? My app consists of a Window Service and a WinForm UI app. Because of the service I can't use ClickOnce so my plan is to have the WinForm check for updates for the service and the WinForm. My question is there is a new version of the service, how can I do I uninstall the old version before I install the new version Or can I have the service update itself Thanks for the help Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Welcome to the Acropolis Forums! Welcome to the Acropolis forums! This is your home for discussing all things Acropolis. Now that we've released CTP1, we're looking for some feedback, so drop by and let us know what you think. Some of us on the team will be monitoring the forums, answering questions, etc., so know that we're out and about, sniffing out comments and concerns at every corner. This is a great opportunity for you to help guide the development of Acropolis. We'll be taking into account the things said here as we continue to work. We'll be looking forward to reading and addressing your comments and questions. Also, don't forget to check out our "Acropolis in Action" screencasts at our windowsclient.net page. You can find it here: http://windowsclient.net/acropolis/ . Keep an eye out, as we'll be adding more screencasts as time goes on. In the meantime, thanks for signing on! See you in the forums! Regards, David This posting is provided "AS IS" with no warranties, and confers no rights. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - How to execute an ASP.net web service over SSL for consuming in a windows client application? Hi, I m developing a SCSF based smart client application using SOA architecture. Now i need to make my web service access secure when invoked from any of the client machine. In order to do this, i want to put my web service over SSL, but i m not aware of the implications after its implementation & how secure it is to put a web service over SSL for a windows based application. Now, i would like to know what are its drawbacks if any & how to use it over windows based application. Thanks, -AP Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - How to set a Property ReadOnly dynamically based on another property value. Hi, I am sorry if I am not able to explain my requirement in the Subject. What I want is, I have a class with two Properties like HasSubMenu, and SubMenu Collection, object of this class is bound to property grid. The class i sgiven below. Code Snippet class Menu { private bool m_HasSubMenu; private List<Menu> m_SubMenu; [Browsable(true)] public bool HasSubMenu { get { return m_HasSubMenu; } set { m_HasSubMenu = value; } } [Browsable(true)] [ReadOnly(true)] public List<Menu> SubMenu { get { return m_SubMenu; } set { m_SubMenu = value; } } } This object of this class (initially with HasSubMenu false and an empty SubMenu Collection) is bound to a property grid. Now that I have a ReadOnlyAttribute set for SubMenu property this collection is read only and user can't edit in the property grid. But what I want is if the user changes the HasSubMenu property to true I want this collection to be editable (I mean somehow I want to make this ReadOnly attribute of SubMenu property false.) I am not able to figure out how should I do this. Any help will be highly appreciated Regards, Vinod S Nair Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Why ReaderWriterLock not release writer lock if inclusive read lock inside writer Lock was I found strange behaviour for ReaderWriterLock. If I call method AcquireWriterLock and then after this in the same thread call method AcquireReaderLock with ReleaseReaderLock, method RelaseWriterLock will not release ReaderWriterLock and WriterLock will stay alive. Is anybody know is this a bug or a feature using System; using System.Collections.Generic; using System.Diagnostics; using System.Threading; using System.Windows.Forms; namespace QuickTest { static class Program { private static ReaderWriterLock _rwl = new ReaderWriterLock(); /// <summary> /// The main entry point for the application. /// </summary> [MTAThread] static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); TestReaderTimeOutException(); } private static void TestReaderTimeOutException() { //1. Make thread which will lock ReaderWriteLock Thread thre = new Thread(new ThreadStart(LockWriter)); thre.Start(); //2. Make thread whick try to acquire ReaderWriteLock and throw timeout Thread thre2 = new Thread(new ThreadStart(LockReader)); thre2.Start(); //Wait 60 second thre.Join(); } private static void LockWriter() { try { _rwl.AcquireWriterLock(10000); LockReader(); } finally { if (_rwl.IsWriterLockHeld) { _rwl.ReleaseWriterLock(); //NOT RELEASE WRITER LOCK! } } } private static void LockReader() { try { try { _rwl.AcquireReaderLock(20000); } finally { if (_rwl.IsReaderLockHeld) { //Try to relase lock which is not held _rwl.ReleaseReaderLock(); } } } catch (Exception ex) //!!! { Debug.Fail(ex.ToString()); } finally { Debug.WriteLine("..."); } } } } Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - SMTP Mail without SMTP Service I have a requirement for an email program to send SMTP mail without having IIS (and therefore no SMTP service) installed on work stations. I found a nice solution to this at http://www.eggheadcafe.com/articles/20030316.asp . I modified the code to fit my needs and it works. However I have a couple of issues. One: How do I cause the SMTP server to send out delivery notifications on failure and success This is pretty easy using the DeliveryNotificationOptions of the System.Net.Mail.MailMessage class. But of course I am not using this. Two: How do I send authentication or system credentials to the SMTP server Again, this is pretty simple using the System.Net.Mail.Message class. Example code: IPHostEntry IPhst = Dns .GetHostEntry(SmtpServer); IPEndPoint endPt = new IPEndPoint (IPhst.AddressList[0], 25); Socket s = new Socket (endPt.AddressFamily, SocketType .Stream, ProtocolType .Tcp); s.Connect(endPt); Senddata(s, string .Format( "EHLO {0}\r\n" , Dns .GetHostName())); Senddata(s, string .Format( "MAIL From: {0}\r\n" , message.From)); Senddata(s, string .Format( "RCPT TO: {0}\r\n" , strTo)); StringBuilder Header = new StringBuilder (); Header.AppendLine( "From: " + message.From.ToString()); Header.Append( "To: "+strTo ); string MsgBody = message.Body; Header.Append( "Date: " ); Header.AppendLine( DateTime .Now.ToString( "ddd, d M y H:m:s z" )); Header.AppendLine( "Subject: " + message.Subject); Header.AppendLine( "X-Mailer: SMTPDirect v1" ); Header.AppendLine( "MIME-Version: 1.0" ); Header.AppendLine( "Content-Type: multipart/mixed; boundary=unique-boundary-1" ); Header.AppendLine(); Header.AppendLine( "--unique-boundary-1" ); Header.AppendLine( "Content-Type: text/html" ); Header.AppendLine( "Content-Transfer-Encoding: 7Bit" ); Header.AppendLine(); Header.AppendLine(MsgBody); Header.AppendLine( "." ); Header.AppendLine(); Header.AppendLine(); Senddata(s, ( "DATA\r\n" )); Senddata(s, Header.ToString()); Senddata(s, "QUIT\r\n" ); s.Close(); ... Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Avoid serializing base class members Hi, I have extended System.Windows.Form.Label control and I also implement one additional interface containing some properties. public class MyLabel: System.Windows.Form.Label, IMyInterface { //... } What will be the simplest way to serialize an instance of MyLabel class to include only IMyInterface members. I do not need to serialize any of base class (Label) members. Thank you. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - ERROR : PARAMETER_? has no default value I am trying to call a INSERT INTO query but I am getting a Parameter error Parameter_ has no default value... private void button2_Click( object sender, System. EventArgs e) { try { //create SQL query to insert row oleDbDataAdapter2.InsertCommand.CommandText = "INSERT INTO Company (" + "Client, [Action], Stake," + "Market, OpeningPrice, ClosingPrice, [OpeningDate], [ClosingDate]" + ") VALUES ('" + listBox1.Text + "','" + listBox2.Text + "', " + textBoxStake.Text + " , '" + textBoxMarket.Text + "' , " + textBoxOpenPrice.Text + " , " + textBoxClosePrice.Text + " , " + textBoxOpenDate.Text + " , " + textBoxCloseDate.Text + ")" ; //notify user that query is being sent textBoxStatusQuery.Text += "\r\nSending query: " + oleDbDataAdapter2.InsertCommand.CommandText + "\r\n" ; //send query oleDbDataAdapter1.InsertCommand.ExecuteNonQuery(); textBoxStatusQuery.Text += "\r\nQuery successful\r\n" ; } catch (System.Data.OleDb. OleDbException oleException) { Console .WriteLine(oleException.StackTrace); textBoxStatusQuery.Text += oleException.ToString(); } } I have checked the insertcommand generated by VS8 and copied it underneath // oleDbSelectCommand2 // this .oleDbSelectCommand2.CommandText = "SELECT IDPortfolio, Client, OpeningDate, ClosingDate, [Action], Stake, Market" + ", OpeningPrice, ClosingPrice\r\nFROM Company" ; // // oleDbInsertCommand2 // this .oleDbInsertCommand2.CommandText = "INSERT INTO `Company` (`Client`, `OpeningDate`, `ClosingDate`, `Action`, `Stake`," + " `Market`, `OpeningPrice`, `ClosingPrice`) VALUES ( , , , , , , , )" ; this .oleDbInsertCommand2.Parameters.AddRange( new System.Data.OleDb. OleDbParameter [] { new System.Data.OleDb. OleDbParameter ( "Client" , System.Data.OleDb. OleDbType .VarWChar, 0, "Client" ), new System.Data.OleDb. OleDbParameter ( "OpeningDate" , System.Data.OleDb. OleDbType .Date, 0, "OpeningDate" ), new System.Data.OleDb. OleDbParameter ( "ClosingDate" , System.Data.OleDb. OleDbType .Date, 0, "ClosingDate" ), new System.Data.OleDb. OleDbParameter ( "Action" , System.Data.OleDb. OleDbType .VarWChar, 0, "Action" ), new System.Data.OleDb. OleDbParameter ( "Stake" , System.Data.OleDb. OleDbType .Integer, 0, "Stake" ), new System.Data.OleDb. OleDbParameter ( "Market" , System.Data.OleDb. OleDbType .VarWChar, 0, "Market" ), new System.Data.OleDb. OleDbParameter ( "OpeningPrice" , System.Data.OleDb. OleDbType .Long, 0, "OpeningPrice" ), new System.Data.OleDb. OleDbParameter ( "ClosingPrice" , System.Data.OleDb. OleDbType .Long, 0, "ClosingPrice" )}); // This was generated by Visual Studio, And also I would like to know what would be the command to update the database too as I have the same function on another form and its working fine (addclient) but the database does not get updated - it says query succesfull, but no change on the back end. Any idea Thanks guys Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - strange behaviour of key() function Hi, I am using .NET 2.0 XslCompiledTransform As I understand if the second parameter of the xslt key() function is a node-set then key function returns union of results applying key functions to each node within the nodeset. So how could it happend that the following expression returns nothing (empty node set) < xsl:copy-of select = " key('Loops', $standardMapContext/xs equence/xs:element/@type) " /> And the following expression returns expected result < xsl:copy-of select = " key('Loops', $standardMapContext/xs equence/xs:element[@type = 'L_3']/@type) " /> The second expression goes right after the first one in my stylesheet. What I mean that the $standardMapContext/xs equence/xs:element/@type nodeset does contain an element with @type='L_3' but when I provide the entire nodeset to key() function it returns nothing. And when I manually filter out extra nodes it return as expected. What is wrong with my understanding of the key() function Thanks, Shurik. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - what is networking in .NET what is networking in .NET through which lilbraries i can programe a bus topology network thanks. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - XmlSerialization attributes: difference between [XmlElement(...)] and [XmlElementAttribute(...)] While familiarizing myself with XML Serialization and controlling serialization using attributes, I've become confused whether there is a different between the use of "XmlElement" or "XmlElementAttribute" in actually writing the attribute in a class declaration, and in general for any serialization attribute. For example, consider the following class: public class Test { public: // public, parameterless constructor req'd for serialization Test(void) {} public: [XmlElement("Member1")] int m_Member1; [XmlElementAttribute("Member2")] int m_Member2; } Even MSDN doesn't seem quite clear on which to use. From the code I've seen, it sounds like XmlElementAttribute is the object in the .NET framework that handles this, but I am to use "XmlElement" while actualing writing the attribute. In contrast, I have seen other code that appends the "Attribute" part of the object name. What is the difference, and which is correct Anjo Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - Error generating classes using XSD.exe I will appreciate any quick help on this: I am trying to use xsd.exe to generate classes for a standard schema. I do not have any choice to modify the schemas. So if the tool has to work, it has to work on the existing schemas. As I tried the following command line xsd /c liberty-metadata-v1.1.xsd I got the following warnings and errors: Microsoft (R) Xml Schemas/DataTypes support utility [Microsoft (R) .NET Framework, Version 2.0.50727.42] Copyright (C) Microsoft Corporation. All rights reserved. Schema validation warning: The 'http://www.w3.org/2000/09/xmldsig# ignature' el ement is not declared. Line 226, position 8. Schema validation warning: The 'http://www.w3.org/2000/09/xmldsig# ignature' el ement is not declared. Line 137, position 8. Schema validation warning: The 'http://www.w3.org/2000/09/xmldsig# ignature' el ement is not declared. Line 178, position 8. Schema validation warning: The 'http://www.w3.org/2000/09/xmldsig#:KeyInfo' elem ent is not declared. Line 154, position 8. Warning: Schema could not be validated. Class generation may fail or may produce incorrect results. Error: Error generating classes for schema 'liberty-metadata-v1_1'. - The element 'http://www.w3.org/2000/09/xmldsig#:KeyInfo' is missing. If you would like more help, please type "xsd / ". I will look forward to any clues. The schema can be downloaded from: http://www.projectliberty.org/liberty/resource_center/specifications/liberty_alliance_specifications_support_documents_and_utility_schema_files Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - SqlDependency timeout problem I'm on XP, SqlSever 2005, .NETfx 3. I'm using SqlDependency to get notifications of changes to my data store. My intent is that when I set up a SqlDependency object, that it will be in effect "forever". However, I find that after 2 minutes or so, changes will not trigger notifications anymore. I initialize the dependency once per app domain thusly: SqlDependency .Start(_connectionString); this ._dependencyConnection = new SqlConnection (_connectionString + "Connection Timeout=" + Int32 .MaxValue.ToString()); _dependencyConnection.Open(); I set up a new notification (once at startup, and after each notification) like this: SqlCommand command = new SqlCommand ( "SELECT Revision FROM dbo.ConfigData where [Key] = '" + _ourKey + "'" , _dependencyConnection); SqlDependency dependency = new SqlDependency (command, null , Int32 .MaxValue); dependency.OnChange += new OnChangeEventHandler ( this .OnChange); SqlDataReader reader = command.ExecuteReader(); reader.Close(); This will fire notifcation for a change that happens within 2 minutes or so. After that, nothing. What am I missing here Thanks Riley Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - System.Runtime.InteropServices.COMException (0x80010105) HELP!!! I have been charged with creating a mini web portal where customers can register a product and in return, get a activation license. I've successfully developed the app on my WinXP SP2 laptop using: Visual Studio 2005, SQL 2005, C#. I am inheriting an assembly that was written in 2003 which is responsible for actually creating the license. I call a function from this inherited .dll and receive the license without any error. Once the site was near completion, I migrated it to my Win2003 Server (standard ed, SP2). I registered my .dlls and added them as references to my newly-created solution. I then compiled the site and got the following error: Error: System.Runtime.InteropServices.COMException (0x80010105): The server threw an exception. (Exception from HRESULT: 0x80010105 (RPC_E_SERVERFAULT)) at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData) at LicenseKeyGen.LicenseKeyGeneratorClass.createLicenseBitString(String a_sFeatures, String a_sProductId, Int16 a_bEvaluationLicense, Int16 a_iEvalPeriod) at XDAL.LicenseDAL.GetFinalLicense(String ParamFeatures, String productID, Int16 ParamEvaluation, Int16 ParamEvalPeriod) in X:\Inetpub\wwwroot\xxx\LicenseDAL.cs:line 394 at XDAL.LicenseDAL.GenerateLicenceKey(String productID) in X:\Inetpub\wwwroot\xxx\LicenseDAL.cs:line 303 at XDAL.LicenseDAL.MatchAndUpdate_ProdID_IKey(String productID, String Ikey) in X:\Inetpub\wwwroot\xxx\LicenseDAL.cs:line 628 at XDAL.LicenseDAL.GetLicense(String productid, String ikey, String email) in X:\Inetpub\wwwroot\xxx\LicenseDAL.cs:line 526 at XBus.License.GetLicense(String productid, String ikey, String email) in X:\Inetpub\wwwroot\xxx\License.cs:line 61 at _Products_Licensing_editProduct.btnSubmit_Click(Object sender, EventArgs e) in X:\Inetpub\wwwroot\xxx\editProduct.aspx.cs:line 240 I then tried debugging to see if the correct parameters were being passed to the function. They are: if you can't see the image: 208.252.199.41/images/error-01.gif After reading some microsoft forum posts I came across: "I managed to solve this on our Windows 2003 machine. It seems that when you regasm the assembly, it won't register the events interface unless you use the /tlb option. I don't really understand it that well but this fixed it for us" I then did this too: if you can't see the image: 208.252.199.41/images/error-02.gif I am thoroughly baffled after 2 days of searching, Googling, calling colleagues, reading blogs, etc. There is so little documentation on System.Runtime.InteropServices.COMException (0x80010105) . Has anyone come across this error when transferring a site to a Win 2003 server Any advice/information would be GREATLY appreciated. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - define a new querydef in an access db using asp.net My scenario is this: I have inherited a large access database, critical to a website. I need to do some work on the site which requires that I modify a number of tables and create a few ne querydef so support the work. The obvious soluition is to ftp the db locally, modify the file and upload it. But If possible I do not want to do this. I don't want to lose data and I don't want to take the db offline. So what I would like to do is create an aspx page which I can use to do operations like creae new querydefs. How can I connect to an access db to do these kind of operations As far as I can tell, the regular OleDbConn does not allow me to do these operations - rather I need to use the access object model. I suspect there must be some utility out there on the internet to do this kind of thing (a bit like phpmyadmin). Does anyone know about this Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - The located assembly's manifest definition does not match the assembly reference. Does anyone know how to have two versions of the same .dll file referenced in the same .net application Let me explain. I have an application that dynamically loads forms contained in other assymblies. The assymblies are in seperate folders with all of the .dlls necessary to run that form in the same folder. The problem I am having is that each of these forms use the same .dll file with different versions. I keep running into the following error when my application tries to open one of these forms: The located assembly's manifest definition does not match the assembly reference. I know that this means that one of my dynamically loaded forms is finding the wrong version of the assymbly needed for that form. I'm assuming this is because it's loading the assymbly for the other form. I am not sure why this is happening. I thought that if I kept the .dlls for the forms seperate in their own folders that it would use those first when loading the assymbly for that form. I have read other posts that would suggest that as long as my assymblies are not strongly typed (which they are not) that the assymbly resolution will look locally for the needed assymbly. My only guess is that since the .dlls that are needed for the form are in a folder seperate from the initially run application that it is by default looking in the GAC because it can't find it locally. This is my suspicion since if I copy the .dll that is giving me the problem to the folder running my main loader application then my form runs fine. If that is the case then I don't know how to make sure that each of my forms uses the correct version of their respective assymblies since I can't very well copy two versions of the same file into the same folder. I have searched and searched and tried everything I can think of with no luck. Any ideas If examples are needed I can see if I can post screen captures somehow. Thanks, Joe Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
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    - "Deserializing" XmlNode.OuterXml to object, then back to XmlNode questions My application provides a GUI for users to edit xml documents. The resulting documents are used by other automated systems following a shared schema. I figured I could cut down on the amount of code I have to write if I used XSD.EXE to generate classes for me to databind the xml to my winforms controls. The nodes in the document are originally created in code using a default namespace declaration which is explicitly declared on the DocumentElement. To edit the nodes, I "deserialize" the OuterXml property of the target XmlNode into the appropriate class created by XSD.EXE, and the user can modify the properties with databound forms. When they click "Save", my code serializes the classes to xml in order to load them back into the source XmlDocument. That code looks like this: Code Block XmlSerializer serializer = new XmlSerializer (xsdObject .GetType()); StringWriter writer = new StringWriter (); serializer.Serialize(writer, xsdObject ); XmlDocument doc = new XmlDocument (); doc.LoadXml(writer.ToString()); // Retrieve the original XmlNode XmlNode oldNode = this .getDefinitionNode( this .metaData.Definition); oldNode.ParentNode.ReplaceChild(oldNode.OwnerDocument.ImportNode(doc.DocumentElement, true ), oldNode); It's ugly, but it works. My only problem is that the resulting xml comes with a bunch of extra xmlns attributes: xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance " xmlns:xsd=" http://www.w3.org/2001/XMLSchema " xmlns=" http://superlongschemaurl " I can delete the first two easily enough with no impact to schema validation, and I understand why I can't delete the last one (it's the namespace identifier that links to my schema). What I don't understand is why the resulting XmlNode that I import above explicitly writes the xmlns declaration to the file, even though the node doesn't have it before serialization, and since the default namespace declaration on the documentElement is in scope for all descendantelements. When I create the original node in the application, I pass in the correct namespace for schema validation, but it's never explicitly written to the nodes in the document--the declaration appears explicitly only once on the documentElement and nowhere else. Isn't there some way I can associate the namespace with these imported nodes without it explicitly redeclaring it in the output XML I know it doesn't hurt anything, but there are literally thousands of nodes in the source document, all of which will be edited by the user, and these unnecessary declarations actually have a significant impact on the size of the file (which can reach into the megabytes all by itself). Any space savings is significant to performance in a lot of ways, so any input would be really helpful. (Also, if anyone wants to suggest an easier way than using XSD classes to databind Xml to winforms controls, but that still benefits from schema constraints like XSD classes do, I'd definitely appreciate it.) Thanks, Jesse Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 11
    - ILMerge: Problem with references Hi, I'm trying to use ILMerge to create components for the Umbraco web framework. I thought it would be nice is I only had to distribute one dll with my component. The setup I'm using is ( a bit simplified): MyComponent.csproj (Visual Studio web project) .... --References ----umbraco.dll (local reference, Copy Local == false) ----SomeComponent.dll (local reference, Copy Local == true) ----System.Web (GAC reference) .... The reason that I have Copy Local == false on the umbraco.dll is that this dll is part of the solution that my component must be deployed to. The SomeComponent.dll is a component used by my UserControls in my project and this is the dll I would like to merge with MyComponent.dll However if I execute: "ilmerge.exe /out:MyComponent.dll SomeComponent.dll" i get an error message saying: "Unresolved assembly reference not allowed: umbraco" I can however not just include the umbraco.dll since this would result in the classes within the umbraco.dll being defined twice when I deploy the MyComponent.dll in the umbraco web application. So my question is there anyway to avoid this error message or is ILMerge an all or nothing solution Regards, Rasmus Oudal Edberg Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 12
    - How to execute an ASP.net web service over SSL for consuming in a windows client application? Hi, I m developing a SCSF based smart client application using SOA architecture. Now i need to make my web service access secure when invoked from any of the client machine. In order to do this, i want to put my web service over SSL, but i m not aware of the implications after its implementation & how secure it is to put a web service over SSL for a windows based application. Now, i would like to know what are its drawbacks if any & how to use it over windows based application. Thanks, -AP Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 13
    - COM interoperability- SAFEARRAY usage Hi I have created a DLL in C# and using the same in VC++ using COM interop. However i need to pass an array of user defined structures to VC++. The signature of the IDL File shows the return type of an array element as SAFEARRAY. I am able to get the elements from the SAFEARRAY but not able to get the exact values. Am i missing something Please help VC++ code hr = CoInitialize(NULL); ReaderXML::ISampleXMLSerializeDemoPtr xmlSerializerptr(__uuidof(SampleXMLSerializerDemo)); IEmployeePtr emp(__uuidof(Employee)); struct IEmployee *_result; if (SUCCEEDED(hr)) { HRESULT hr= xmlSerializerptr->ConvertXMLToEmployee(); if(SUCCEEDED(hr)) xmlSerializerptr->raw_GetEmployeeDetails(&_result); //_result will have the Employee object //returned from C# dll } long lIndex =0; long pinCode=0; SAFEARRAY *pSa; pSa= _result->GetEmpAddress(); //GetEmpAddress returns an array of Address objects Address HUGEP *pAddressList= NULL; //Problem in the following part .. i am getting value for pinCode but not what is being received from the dll hr = SafeArrayAccessData(pSa,(void HUGEP**) &pAddressList); if(hr == S_OK) { for (lIndex =0; lIndex < pSa->rgsabound[0].cElements; lIndex++ ) { pinCode = (long)pAddressList[lIndex].PinCode; //Pincode is something like 17629104 instead of 100 } } SafeArrayUnaccessData(pSa); //C# Code public interface IAddress { int PinCode { get; set; } } [ClassInterface(ClassInterfaceType.None)] [StructLayout(LayoutKind.Sequential)] [Serializable] public class Address:IAddress //ADDRESS CLASS { private int pinCode; public int PinCode { get { return pinCode; } set { pinCode = value; } } public Address() { } } public interface IEmployee { string Name { get; set; } Address[] EmpAddress { get; set; } int Age { get;set; } } [ClassInterface(ClassInterfaceType.None)] [Serializable] public class Employee : IEmployee { private string name; private Address[] address; private int age; [System.Xml.Serialization.XmlElementAttribute("EmpAddress")] //this attribute is required for accessing an array public Address[] EmpAddress { get { return this.address ; } set { this.address = value; } } public int Age { get { return age; } set { age = value; } } public string Name { get { return name; } set { name = value; } } public Employee() { address = new Address[5]; age = 0; name = ""; } public Employee(Employee e) { this.age = e.Age; this.name = e.Name; this.address = e.EmpAddress; } } public class SampleXMLSerializerDemo:ISampleXMLSerializeDemo { Employee emp; public Employee GetEmployeeDetails() { return emp; } public void ConvertXMLToEmployee() { try { Employee e = new Employee(); e.Age = 2; e.Name = "Hello"; Address []addr = new Address[2]; addr[0].PinCode = 100; addr[1].PinCode = 111; e.EmpAddress = addr; emp = e; } catch (Exception ex) { throw ex; } } public SampleXMLSerializerDemo() { } }   Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 14
    - Strange: calling EndInvoke from an AsyncCallback - why UnhandledException Can someone help me explain this In the simple example below, why does case 4 cause AppDomain.UnhandledException (which kills the app) instead of Application.ThreadException, given that the exception is ultimately thrown on the UI thread (being the same thread on which the exception is thrown in cases 1-3) What am I missing using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Threading; namespace WindowsApplication4 { public partial class Form1 : Form { private delegate void CrasherDelegate (); public Form1() { InitializeComponent(); AppDomain .CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler (currentDomain_UnhandledException); System.Windows.Forms. Application .ThreadException += new ThreadExceptionEventHandler (application_ThreadException); } private void currentDomain_UnhandledException( object source, UnhandledExceptionEventArgs e) { Exception ex = ( Exception ) e.ExceptionObject; label1.Text = "There was a problem (Unhandled Exception - Terminating: " + e.IsTerminating + ")\n" + ex.Message; MessageBox .Show( this , ex.Message, "There was a problem (Unhandled Exception - Terminating: " + e.IsTerminating + ")" , MessageBoxButtons .OK, MessageBoxIcon .Error); } private void application_ThreadException( object source, ThreadExceptionEventArgs e) { Exception ex = e.Exception; label1.Text = "There was a problem (Thread Exception)\n" + ex.Message; MessageBox .Show( this , ex.Message, "There was a problem (Thread Exception)" , MessageBoxButtons .OK, MessageBoxIcon .Error); } private void Crasher() { throw new ArgumentException ( "Crasher threw on thread: " + Thread .CurrentThread.ManagedThreadId); } private void CrasherWithParam( object param) { throw new ArgumentException ( "Crasher(" + param + ") threw on thread: " + Thread .CurrentThread.ManagedThreadId); } private void Callback( IAsyncResult iar) { if (! this .InvokeRequired) { CrasherDelegate d = iar.AsyncState as CrasherDelegate ; if (d != null ) { MessageBox .Show( "Calling EndInvoke on thread: " + Thread .CurrentThread.ManagedThreadId); d.EndInvoke(iar); } } else { this .Invoke(( MethodInvoker ) delegate { this .Callback(iar); }); } } private void button1_Click( object sender, EventArgs e) { Crasher(); } private void button2_Click( object sender, EventArgs e) { CrasherDelegate d = new CrasherDelegate (Crasher); d.Invoke(); } private void button3_Click( object sender, EventArgs e) { CrasherDelegate d = new CrasherDelegate (Crasher); IAsyncResult iar = d.BeginInvoke( null , d); // both of these work equally well d.EndInvoke(iar); //Callback(iar); } private void button4_Click( object sender, EventArgs e) { CrasherDelegate d = new CrasherDelegate (Crasher); AsyncCallback cb = new AsyncCallback (Callback); IAsyncResult iar = d.BeginInvoke(cb, d); } private void button5_Click( object sender, EventArgs e) { WaitCallback cb = new WaitCallback (CrasherWithParam); ThreadPool .QueueUserWorkItem(cb); } } } Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 15
    - IIS Settings for Publishing WebServices Hi I have webservice website in ASP.NET2.0 and published these webservices to IIS Server 5.1 on local host .My system has WinXP with sp2. When I try to browse any of webservice then it gives me following error ----------------------------------------------------------------------------------- The XML page cannot be displayed Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development
  - 16
    - NTAccount.Translate for '<Domain>\Administrators' group account fails Hi! Can anyone please explain me why following code gives an SecurityException "System.Security.SecurityException: The name provided is not a properly formed account name." -- code start -- System.Security.Principal.NTAccount ntAccount = new System.Security.Principal.NTAccount(@"<domain>\Administrators"); System.Security.Principal.SecurityIdentifier sid = (System.Security.Principal.SecurityIdentifier)ntAccount.Translate(typeof(System.Security.Principal.SecurityIdentifier)); -- code end -- where "<domain>" in "<domain>\Administrators" is your Active Directory Domain. Note: <domain>\Administrators is a built-In group. It is visible trough 'Find' dialog in Active Directory Users and Computers Snap-In. Tag: .NET Framework Networking and Communication How to dispose TcpListener's holding port? .NET Development

mike_d...

I am developing a chat programme using TcpListener and TcpClient..
In the server side form, I have two buttons one is "Start Listening",the other is "Stop Listening"..
Now the problem is :
when I re-enter the "Start Listening" button after stop listening ,i will get this error : the same port can only be used once,
but i 've stop the Tcplistener after I enter the "Stop Listening" button,
i don't know why
who can help me
thanks

Re: .NET Framework Networking and Communication How to dispose TcpListener's holding port?

julien talois

normally your TCP listener component must have a "bind" propertie.

Search on this side or post your code...

Hope it helps.

JuuL

Re: .NET Framework Networking and Communication How to dispose TcpListener's holding port?

Amit Paka - MSFT

Are you indeed calling Stop on the Httplistener then the 'Stop Listening' button is pressed
Are you instantiating Httplistener with a specific IP address and port
Please post the code snippet.

Re: .NET Framework Networking and Communication How to dispose TcpListener's holding port?

RizwanSharp

It should work fine. Make sure you are using Start and Stop methods of TcpListener to start and stop respectively.

Best Regards,

Rizwan aka RizwanSharp

Re: .NET Framework Networking and Communication How to dispose TcpListener's holding port?

Indian Ocean

Hi,

Stop Listening button event handler code must have the line similar to the following,

objTcpListener.Stop() - this will stop the listener and close the underlaying socket.

If you still get the error, please post that code snippet where you find this problem,

HTH,

Re: .NET Framework Networking and Communication How to dispose TcpListener's holding port?

Alan J. McFarlane

Two other point should be raised:

1. Are you closing any accepted connections too If the TcpListener has returned N connections via AcceptSocket/AcceptTcpClient, then all the N connections must be closed too.

2. TCP (the protocol) mandates that a port cannot be reused with two minutes (etc) of the last connection using that port closing. So don't expect to be able to restart the listener within that period.

In a command prompt use "netstat -a" and look for instances using your server port; still connected connections will be ESTABLISHED, and those in the second situation will be in TIME_WAIT.