Opening a webpage from a Windows Application in C#

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  - 1
    - C struct of delegates is clobbered when one is called I'm passing a struct containing delegates to an native call in a DLL that wants a struct full of function pointers. The values it receives are all valid. However, when execution returns to the native DLL from the managed method (which runs flawlessly), all the members of native struct seem to get clobbered. What I can't figure out is whether this is because they're all getting garbage collected, or I mixed up the calling conventions somewhere. Here's what happens to the native struct before and after it calls into the managed code: a struct containing 4 pristine function pointers: 0x00198568 003421ca 0x0019856C 00342352 0x00198570 00342392 0x00198574 003423d2 Afterwards, all 4 members are clobbered, and the word immediately following the struct contains the address of the beginning of the struct. 0x00198568 00198428 0x0019856C 000000c8 0x00198570 00000001 0x00198574 00000000 0x00198578 00198568 In short, the memory containing a C struct with 4 pointers into managed code turns into what looks like something from the stack after one of the function pointers is called. It's worth bringing up the fact that my DLL uses cdecl. I've tried adding GCHandles to the C# struct, and also to each of the delegates it contains. I've also tried declaring the delegate types used in the struct with the attribute UnmanagedFunctionPointer(CallingConvention.Cdecl). None of which made any difference. Does anyone have any other ideas Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 2
    - how to hide the task bar in c# ???? hii how are u i maked a very good programe but ! i wonna know how to hide the task bar can u help me i maked messanger with server and client and i added buttons to open cd roome and close it and i suceed but i failed in hiding the task bar so can u help me good bye Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 3
    - Error Message in VS 2005 Hi everybody i have setup various programms on my computer and then when i ve tried to relaunch VS to modify applications graphically i ve got the following error message : One or many errors have been encountered during the load of conceptor those errors are reported below some of them can be corrected by regenerating again the solution other ones with coding modifications a Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str) a Microsoft.Win32.RegistryKey.GetValueNames() a Microsoft.VisualStudio.Shell.Design.WindowPaneProviderService.AppendWindowPanes(RegistryKey parentKey, ArrayList windowPanes) a Microsoft.VisualStudio.Shell.Design.WindowPaneProviderService.GetRegisteredPanes(String extension) a Microsoft.VisualStudio.Shell.Design.WindowPaneProviderService.CreateWindowPane(DesignSurface surface) a Microsoft.VisualStudio.Design.Serialization.CodeDom.DeferrableWindowPaneProviderService.CreateWindowPane(DesignSurface surface) a Microsoft.VisualStudio.Design.Serialization.CodeDom.DeferrableWindowPaneProviderService.DeferredWindowPane.EnsurePane() So please tell me what to do the code is without any truble i can launch the applications withouth any truble but the conceptor remain unavailable for all the solutions how do i need to proceed to solve that problem i ve remove and setup VS2005 twice No use the same problem remain i am unable to go ahead with programming any help will be welcome thanks in advance Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 4
    - Accessing files over network can somebody assist me how to access the files over the network in a web application using C#. I need to copy a certain file from server to local machine in a web application using C#, can somebody help me regarding this. thank you Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 5
    - IDE Crashes when trying to accessing Database Problem: Visual Studio 2005 IDE Freezes then crashes. Causes: Click on View \ Server Explorer, Try to open a Dataset in the Solution Explorer, Try to create a DataBase Connection. So Far I have: Proved i can connect to the DataSource with MSMSE, Compiled and Ran the WebApp and it still runs fine (including database connections), Installed the Visual Studio SP1, Tried to open the Server Explorer in an empty project, Repaired Visual Studio 2005, Reset all settings in Visual Studio. Any help would be appreciated Regards Peter Calvert Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 6
    - typeof(A<>) and compiler error hi, I wrote classes: Code Snippet class A { } abstract class A<T, U>: A { } class A<T, U, V>: A { } then I'm trying to get instance of A<T,U,V>: static A GetA(Type t, Type u, Type v) { Type a = typeof( A <>).MakeGenericType(t, u, v); return (A)Activator.CreateInstance(a); } That func doesn't compile with error "The non-generic type 'Karioth.Test.A' cannot be used with type arguments" at marked point. How can I create an instance of A<T,U,V> Thanks. Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 7
    - Debug vs Release Hello, I have a Windows Forms application written in C# via VS 2003. It does 100% of what it should while in Debug mode. However, there is one thing it does not do when compiled in Release mode. There is an external .dll I have to connect to, to do a screen scrape of an AS400 application. The linking of it is as follows: [DllImport("PCSHLL32.dll")] public static extern UInt32 hllapi(out UInt32 Func, StringBuilder sbData, out UInt32 Length, out UInt32 RetC); When I run in Debug mode it connects and gives me the correct return code of 0 which = Success. However, when I run in Release mode I get a different return code of 10 which is Unsupported. There is no code difference between modes. I have no #debug or anything onther than the exact code. The only thing I can figure is perhaps a security difference between Debug and Release modes. Is this the case Are there any other suggestions on how I can get this piece to work Thanks in advance, Kevin Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 8
    - Help! Issues with Strongly-Typed Data Sets Hi, does anyone have a good resource for information about Strongly Typed Data Sets (the "handy" .xsd files) We are trying to use them in a development project including 4 different developers, and when we share them out we invariably get 'strange' errors such as this that we have no idea how to fix... Error 1 The type 'PRODUCT_PLTFRM_SUBSET_STATUS' already contains a definition for 'PRODUCT_PLTFRM_SUBSET_STATUSRowChangeEventHandler' c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website3\5e684806\6e9c560e\ App_Code.15i-blbo.18.cs 219 Error 2 The type 'PRODUCT_PLTFRM_SUBSET_STATUS' already contains a definition for 'PRODUCT_PLTFRM_SUBSET_STATUSRowChangeEvent' c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\website3\5e684806\6e9c560e\ App_Code.15i-blbo.18.cs 680 ...and except for clicking on the errors, we can't see these autogenerated .cs files at all in any of our VS explorer panes to try to clean them up and/or regenerate them. This is causing us HUGE pains, and unfortunately we're already quite a way down the road in using this approach for database access in our project. Any ideas or references would be great. Some of the articles we've read so far don't seem to jive with the menu options we actually have in our VS installations. For example: http://en.csharp-online.net/Visual_Studio_Hacks%E2%80%94Hack_49:_Generate_Strongly_Typed_DataSets This article has a section that says this ... Let Visual Studio Help Visual Studio provides a nice shortcut to creating your own strongly typed DataSet objects. Follow these simple steps: 1. Open your Visual Studio Project (or create a new one). 2. Select the project in the Solution Explorer and click the Show All Files button. I do *NOT* have a "Show All Files" button on my Solution Explorer pane (pain )!!!!! The reason I'm interested to do this is because of this ... from the same article ... The other thing to know is that the class file for the strongly typed DataSet object was autogenerated for you. You can see it by turning on Show All Files and expanding the XSD file. Figure 6-9 shows that the Customers.cs class file was autogenerated to create a DataSet object of type Customers. I want to see the ".cs" file associated with an XSD file!!! How do I do that Thanks for any help anyone is able to provide!!! Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 9
    - Create Background Process Does anyone know how to create a background process i.e., I want the process to not be visible in the taskbar, or system tray. I am starting the process using System.Diagnostics.Process.Start(). If there is not a way to start a process this way, then does anyone know a message number I can send throught the User32.dll SendMessage() API to achieve the same result Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 10
    - Unmanaged to managed code I have funtion wich was written in C++ and has the signature like this : "DWORD XPTO(BYTE **aux)" I want to use it within C# code but the function has to be declared like: static extern xpto( aux )), I dont know how to translate it!!! Can Anyone help Thanks a lot! Barbara Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 11
    - StandAlone Executable I am trying to build a c# win32 app that relies on no external resources or support libs. The idea is an independent application that can fit on a USB key or other compact portable storage device that does not require an install, registry registration, exc.. Just one file. Any Ideas or suggestions Is this doable in c# or would I need to do this in C or C++ Oh, and on the subject of compilers, does anyone know where to find the native C MS compiler Joshua Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 12
    - params parameter must be a single dimensional array - (It is! Tell me it isn't!)<g> Wasn't the goal, and hope for .Net 2 / the next version of C# not to rely on boxing of objects For it is the cornerstone of Generics... typesafe arrays and no more boxing ! But one area was overlooked.....take for example this code using the params keyword public void Columns(params string[] ColumnNames) { ... } Nice convention! It saves keystrokes and makes code easier to use ...but it was not updated to use generics! The following code in .Net 2 gets the dreaded CS0225 error erronously telling the user that a single dimensional array is not being used.... public void Columns( params List<string> items ) { ... } Feel free to tell me that List<string> is not a single dimensional array. I sure think it is. Obviously the error text should say "params parameter must be a single dimensional array and must not be a generic list " but that is not the direction of the post. The question is this, " Why wasn't the params lexical analysis for version two changed to handle generics " All thoughts appreciated and welcome. How about in the next version Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 13
    - Multi-language solution In a multi-language (multi-project) solution, does each project have to come out as a separate EXE Or, can one project call functions in the other, whereby it all compiles to one executable Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 14
    - Reg:Multiple inheritance Hi Guys, Multiple inheritnce not supported in C# But we can achieve this using interface right. plz find the code below.I have implemented multiple inheritance using interface public interface coolbaby1 { void caller(); } public interface coolbaby2 { void caller(); } public class Multiple : coolbaby1 , coolbaby2 { void coolbaby1 .caller() { } void coolbaby2 .caller() { } } As per the multiple inheritance concept i have implemented my Muliple class derived from two interfaces cool baby1,cool baby2 But inheritance means code reuseability right here we are not getting any code reuseability then My question how come we are telling multiple inheritance possible through interface without code reuseablity.... kindly help me..... Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 15
    - jagged arrays 2 Sorry for making a new thread. The site wasn't letting me resond to the old thread for some reason. When making a two dim array for use in numerical algorithms in C++, it's very useful to do it this way... int rows=3; cols=4; double **matrix; matrix = new double* [rows]; matrix[0] = new double[rows*cols]; for(int r=1; r<rows; r++) matrix[r] = &(matrix[0][r*cols]); This is a ptr to array of ptrs but the important thing to note is that all memory is allocated as a single array when matrix[0] is assigned. The other ptrs just point into this array. This allows me to access/assign the array elements like this... matrix[2][3] = 100; or like this... matrix[0][11] = 100; TilakGopi was helping me and was very close to a solution. He proposed code like this... const int rows = 3; const int cols = 4; int[][] jaggedArray = new int[rows][]; jaggedArray[0] = new int[rows * cols]; jaggedArray[1] = jaggedArray[0]; jaggedArray[2] = jaggedArray[0]; for (int i = 0; i < rows; i++) for (int j = 0; j < cols; j++) jaggedArray [j] = i * cols + j; for (int j = 0; j < rows * cols; j++) Console.WriteLine("jaggedArray[0][" + j + "] = " + jaggedArray[0][j]); Console.ReadLine(); But this code gives the output... jaggedArray[0][0] = 8 jaggedArray[0][1] = 9 jaggedArray[0][2] = 10 jaggedArray[0][3] = 11 jaggedArray[0][4] = 0 jaggedArray[0][5] = 0 jaggedArray[0] = 0 jaggedArray[0][7] = 0 jaggedArray[0] = 0 jaggedArray[0][9] = 0 jaggedArray[0][10] = 0 jaggedArray[0][11] = 0 I need jaggedArray[1] to point to the address of jaggedArray[0][cols] instead of jaggedArray[0] and jaggedArray[2] to point to the address of jaggedArray[0][2*cols] instead of jaggedArray[0] Is there a way to do this in C# Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 16
    - Visual Studio 2005 IDE crashes with C# projects I��m having this problem with VS2005 it crashes when I keep break point and start debugging with C# applications (console project, Web Projects, Windows Projects) and also existing projects. Strange thing is it works fine with VB.Net projects. It comes as Microsoft Visual Studio has encountered an internal error Re-installing and then installing Service Pack 1 did not make a difference, i.e. VS2005 still crashes. Event viewer has application error entries: Faulting application devenv.exe, version 8.0.50727.42, stamp 4333e699, faulting module unknown, version 0.0.0.0, stamp 00000000, debug 0, fault address 0x000000012. I��m using Visual Studio 2005 Team edition for Software Developers Windows XP Professional SP2 Please help me with this I can��t debug my applications any working solution would be much appreciated. Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
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  - 1
    - 'System.OutOf MemoryException' - Please help Dear Sir ...Please help Please help for the following error 'System.OutOf MemoryException' was thrown. I given the following code to read a text file . But the above error mesage is coming System.Text.StringBuilder sb = new System.Text.StringBuilder(); using (FileStream fs = new FileStream(FileName , FileMode.Open, FileAccess.Read)) { using (FileStream fs2 = new FileStream(outFile , FileMode.Create)) { BinaryReader r = new BinaryReader(fs); BinaryWriter w = new BinaryWriter(fs2); int fsize = ( int ) fs.Length; byte [] bytes = r.ReadBytes(fsize ); int field = 0; for ( int i = 0; i< bytes.Length ; i++) { if (sb.Length> 0 ) { char cd = sb[sb.Length-1]; strValue = strValue+cd; } } } Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 2
    - remove an item from a list while iterating through it I have a sortedList, and I need to iterate through it, comparing it to a table with the updated data, and remove old items, what is the best way to do this I think what I have below will though an exception since I'm removing an item from the list that im iterating through, so how do I do this should I use a regular for loop instead bool FOUND; foreach (Equipment tmpEQ in equipments)//remove equipment no longer active { FOUND = false; foreach (DataRow dr in EQTable.Rows) { if (dr["EQUIPMENT"].ToString() == tmpEQ.equipment) FOUND = true; } if (FOUND == false) equipments.Remove(tmpEQ); } Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 3
    - Help with: "Unable to cast COM object of type..." error. I get the error below when I call many of the HTML... components, such as mshtml.HTMLAnchorElementClass or mshtml.HTMLDivElementClass. for example: foreach (mshtml.HTMLAnchorElementClass aAnch in aItems) When I do that the program dies immediately. and this error below is posted: Unable to cast COM object of type 'System.__ComObject' to class type 'mshtml.HTMLAnchorElementClass'. COM components that enter the CLR and do not support IProvideClassInfo or that do not have any interop assembly registered will be wrapped in the __ComObject type. Instances of this type cannot be cast to any other class; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface. Calls to top level classes like MSHTL.IHTMLElementClass always work. And so do calls to such things as mshtml.HTMLTableCell and mshtml.HTMLTableRow. The strange thing is that this happens on one machine and the code runs fine on my other machines, both XP and w2k3 servers. The one machine it fails on is a w2k3 server with IE 7 and .Net 2, nothing else special on it. Anyone have any clues as to what might be happening If it's a matter of registering DLL's, shouldn't .Net installation have registered the proper dll's like microsoft.mshtml.dll, mshtml.dll, Interop.SHDocVw.dll My calls are compiled in the exe and there is an extra dll's with utility methods that have nothing to do with mshtml. Any pointers/clues are appreciated. Thanks in advance! Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 4
    - Windows c code help please, thank you! I can't get the "result" to print out the answer. Can you see why please using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace Calculator { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void calculateButton_Click( object sender, EventArgs e) { double value1 = Double .Parse(value1Box.Text); double value2 = Double .Parse(value2Box.Text); double result = 0.0; Calculator calc = new Calculator (); switch (operation.Text) { case "Add" : result = calc.Add(value1, value2); break ; case "Subtract" : result = calc.Subtract(value1, value2); break ; case "Multiply" : result = calc.Multiply(value1, value2); break ; case "Divide" : result = calc.Divide(value1, value2); break ; } } private void operation_SelectedIndexChanged( object sender, EventArgs e) { } private void value2Box_TextChanged( object sender, EventArgs e) { } } } Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 5
    - Using public classes : error The type or namespace name 'answer' could not be found ] I am a novice and am not getting what is wrong ( ) I have to use a class across multiple pages(I have made it public) Whenever I try to reference the functions of the class from other pages, it gives me this error message: CS0246: The type or namespace name 'myclass' could not be found (are you missing a using directive or an assembly reference ) I tried enclosing it within a namespace(answer). When, I try to use it in the other pages (in ASP.NET) it gives me the same error message even though I used using answer; Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 6
    - FileInfo.Delete question I'm having what is probably, given my skill level, an extremely stupid issue with trying to archive a file. Essentially, customers are copying files to an FTP site. I'm building a windows service that detects new files, does a whole mess of stuff is done with the data in the files, and then archives them using the following: Code Snippet public void ArchivePO(string name, string path, string destination) { try { DateTime dtNow = DateTime.Today; string newName = dtNow.ToString("ddMMyy")+name; FileInfo copyFile = new FileInfo(path); copyFile.CopyTo(path + newName); //this part doesn't work FileInfo deleteFile = new FileInfo(path); deleteFile.Delete(); } catch { error handling } } And I keep getting, The process cannot acces the file " . . . . . . " because it is being used by another process. I know there is some simple and stupid thing that I'm missing here, but I've yet to figure it out. Anyone have any thoughts Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 7
    - how can we see output? hi, i m using visual C#. when i build the program its build correctly by pressing F5 . but how can we check the output of that program Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 8
    - Interfaces oversold??? First, I must admit that I am a C# novice and so I probably don��t have as much knowledge and experience on the subject of interface as most of you guys reading this post. After reading a few books on C# and interface design, I still can��t see and understand the real power of interface unless of course, we are talking about interfaces as a powerful concept in OOP ��only�� and not as a powerful concept in the general sense. When I was first learning OOP I was quite suspicious about the ��excellent features�� that OOP claims to be able to deliver to the world and I was right. For example, in reality OOP offers very little if any, code reuse. I am now having the same suspicion about interfaces even though I see a lot nice words used to describe them, for example ��powerful, extensible, flexible just to name a few. Can someone please give me some guidance on the following issues I have in relation to interface. I am trying to make sure I really understand what going on. Thanks! 1. Code reuse Since each implementation of the interface by the subclass must be coded from scratch, there is no code reuse (unlike class inheritance), am I correct If that��s the case, why can��t the programmer just code methods for each individual class as separate components and reference them when required There is also no indication that using interface will lead to less documentation or less work needed to explain the components. Lastly, what is the point of inheriting from methods that have no body or ��reference types�� Are interfaces really just for ��grouping�� classes and objects in a more organized way 2. Flexible When it comes to flexibility, using interfaces are not necessarily any more flexible than using class inheritance. The books I have read tell me that once an interface is published, it would be a bad idea to modify it especially if you already have many clients implementing the same interface. So ultimately, the burden of producing an application with a clear logic and flexible design rests on the shoulder of the programmer and that interfaces or even the programming language might have absolutely nothing to do with the good design. 3. Powerful Is interface a powerful concept only in the OO world or OO sense Does anyone know any good articles that clearly demonstrate the true power of well designed and implemented interfaces 4. Enforcing standards Standards can be enforced through the use of clear documentation, diagrams and naming conventions. In fact, clear documentations are the basis of any good design anyway. . Are there any compelling reasons why you would want to enforce standards through the use of interfaces What exactly are the ��practical�� benefits anyway By practical I mean for example, the system would be able to better manage the memory or compile the code more efficiently I am thinking that the benefits must somehow relate to how the computer manages or processes ��stuff�� because for us humans, the logic behind this whole interface stuff isn��t new or particularly fascinating. Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 9
    - missing .vstemplates i've installed visual studio c# and i don't have any project templates what so ever installed. where can i get them from. Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 10
    - Syntax for chaining constructors in C# Language Specification The C# Language Specification 1.2 (Sections 1.6.3 Base Classes and 1.6.6 Other function members shows a syntax for chaining constructors that doesn't seem to work where what follows the ':' is the name of a different constructor (either in the base class or it seems even a different constructor in the current class ) . I've tried several variations on this syntax with no succes. I get an error on build that either 'base' or 'this' is expected. I looked at the 2.0 spec update TOC and none of the items jumped out at me as addressing this issue. The syntax that works is : base() but the documented syntax I cannot seem to get it to work. If someone could point me to where this syntax was updated or changed Here is a code sample cut straight out of Section 1.6.3: public class Point { public int x, y; public Point(int x, int y) { this.x = x; this.y = y; } } public class Point3D: Point { public int z; public Point3D(int x, int y, int z): Point(x, y) { this.z = z; } } and another from later on in the document, 1.6.6: public List(): List(defaultCapacity) {} public List(int capacity) { items = new object[capacity]; } Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 11
    - Windows Service or Scheduled Task Dear All, I need to run particular database script every 20 minutes. So what should I be doing I am confuse between windows service and scheduled task. Which is better Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 12
    - Set List<t> type at runtime? I am having trouble creating a list<> as a field in a class with a type passed to the class constructor as a parameter. Is this possible Thanks. Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 13
    - [C#] Waiting for an event to be fired Hello everyone. I am trying to find a way of making my application stop whilst an event has not been returned. Here is how it works: First, it looks through a xml file such as Code Snippet <Actions> <Action> <Type>Method</Type> <Member>ExampleMethod</Member> <Value xsi:type="xsd:short">0</Value> <Parameters> <anyType xsi:type="xsd:string">10000</anyType> </Parameters> </Action> <Action> <Type>Event</Type> <Member>ExampleEvent</Member> <Value xsi:type="xsd:string">ValueOfTheExampleEvent</Value> <Parameters /> </Action> For every action, it tries to load the method, or verifies the event value. In this example, it calls ExampleMethod which fires ExampleEvent. It tests ExampleEvent's value which here should be ValueOfTheExampleEvent. The problem is the event may at one point take some time to be returned. In such a case, my application crashes. So, what I'd like to do is making it wait until the event is fired. Do you have any idea of how I could do that Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 14
    - Delete the entry from file how to delete the entry from file as i have following code for getusername() [code] override public void getUserName() { try { file = new FileStream(@"C:\username.txt", FileMode.Append, FileAccess.Write); // Create a new stream to write to the file sw = new StreamWriter(file); Console.WriteLine("Please Enter your username :"); s = Console.ReadLine(); Counter = Counter + 1; sw.WriteLine(Counter+"."+s); //sw.Write(sw.NewLine); Console.WriteLine("Please Enter your Phone Number :"); String ph = Console.ReadLine(); int i = Int32.Parse(ph); sw.WriteLine(i); sw.Write(sw.NewLine); // Close StreamWriter sw.Close(); // Close file file.Close(); } [/code] What can be used to delete the data from file I am mainly interested if every entry should be removed like following File username.txt contains 1.haroon 123456 1.shah 78 Please enter username to delete the data: haroon Now it should delete haroon and 123456. How this delete functionality can be implemented Any idea please help Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 15
    - Generic Method Return Type Can any one help I have a method that will return a List to be bound as a datasource to a combobox see code for population below. I get the following error when i try to compile Error 29 Cannot implicitly convert type 'System.Collections.Generic.List<Prsym.ComboPopulation.ComboInfo>' to 'System.Collections.Generic.List<T> ' /// <summary> /// Gets the data source to be bound to a ComboBox. /// </summary> /// <param name="storedProcedure">The Name of the Stored Procedure to be used.</param> /// <param name="scheme">The scheme.</param> /// <returns>A Generic List to be dound to a ComboBox</returns> private static List<T> GetDataSource<T>(string storedProcedure, PrsymScheme scheme) { Type dataSourceListType = typeof(T); if (dataSourceListType == typeof(ComboInfo)) { List<ComboInfo> dataSourceList = new List<ComboInfo>(); ComboInfo datSourceComboInfo = new ComboInfo(); DataBaseAccess DBA = new DataBaseAccess(scheme); SqlDataReader reader = null; DBA.LoadData(ref reader, storedProcedure); while (reader.Read()) { datSourceComboInfo.Display = reader["Display"].ToString(); datSourceComboInfo.Index = Convert.ToInt32(reader["Index"].ToString()); dataSourceList.Add(datSourceComboInfo); } //Clean up reader.Dispose(); return dataSourceList; } else { return null; } } Any help would be greatly received Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#
  - 16
    - byte array to bitmap Hi there, how can I create a bitmap within a byte array, using pinvoke I found functions like createBitmap, createBitmapIndirect in gdi32, but I don't know, how to use it, or are they the right functions. I have to use pinvoke!!! Somebody can help me Greets sirithvasa Tag: Visual C# General Opening a webpage from a Windows Application in C# Visual C#

Marco Peters

I've got a Windows Application with a form, how can i let a button open a webpage

Please reply, need help fast!

Marco

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Re: Visual C# General Opening a webpage from a Windows Application in C#

Dennis Vysotskiy

You could use WebBrowser control to open a web page within your application.

Below is the code that will open a web page in your default browser.

Code Snippet

string url = "http://www.google.com";

System.Diagnostics.Process proc = new System.Diagnostics.Process();

System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(url);

proc.StartInfo = startInfo;

proc.Start();

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Re: Visual C# General Opening a webpage from a Windows Application in C#

Marco Peters

Thank's, you saved my day!

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