I have an app that opens a text file, but i can't see the accents, instead i see something like this:
cu l es l
the problem is by reading the file or a property in the textbox where is displayed
Text file symbols
Visual C# General
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- Confused about how default indexers property works Hi, Lennart The set method will not be executed in your scenario. Note that this line of code: club[0].Name = "John" ; It gets the reference of the Person instance by get method, then it only changes the Name property of the Person instance you've just got, so the set method is not used. If you use this: club[0] = new Person("Jordan"); the set method is then called and the content of club is changed. Best Regards Chunsheng Tang Tag: Visual C# General Text file symbols Visual C#
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- Passing parameters Hi, int addpenalty( int i) { i = i + 1; Console .WriteLine( "i inline = " + i); } U didn't return the value of i from the function, add 'return i' in the function , then it works fine.It should be like.. int addpenalty( int i) { i = i + 1; Console .WriteLine( "i inline = " + i); return i; } Hope u got the error in ur code. Thanx, Ch.T.Gopi Kumar. Tag: Visual C# General Text file symbols Visual C#
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- Activator.CreateInstance Fails! Ok, I created a simple scenario. Just consider it as a tutorial, follow it and you will get the answers. First, create a new Windows Application project in C# named 'AssemblyTest'. Now, Rename the project from AssemblyTest to Assembly1. So now Solution's name is AssemblyTest and Project's name is Assembly1. Now Assembly1 has a form in it named Form1 by default. Add a new project to the solution named Assembly2 which will also have a default form in it also named Form1. Now open Assembly1's project properties. In the build tab, change Output Path from 'bin\Debug' to '..\bin\Debug'. Do the same for Assembly2. This will cause the output of both projects generated in the same folder. So one assembly can see the other in the same folder. Now, add the following lines to the Assembly1's Program class's Main method : static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Assembly a = Assembly.Load("Assembly2"); Form f = (Form) a.CreateInstance("Assembly2.Form1"); f.Show(); Application.Run(new Form1()); } Now if you execute the application, you should see two forms open. Now the main point to remember here is both projects generate output in the same directory. And so Assembly1 is able to see Assembly2 at runtime. Another thing to remember is we shared a Type of object which is available in both the assemblies. Which is 'System.Windows.Forms.Form'. So for custom types, make sure the type is available in both of them otherwise the code will generate syntax errors. Hope this helps. Tag: Visual C# General Text file symbols Visual C#
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- C# COM entry point function Thanks Peter , I have learned some materials and I found that there is no need to write function like DllGetClassObject, and in C# COM, this function is generated automatically and the entry point is through mscoree.dll, right Peter Ritchie wrote: You cannot write an "export" in a .NET assembly. Managed code has to run through the framework, it can't do that with programmer-written entry-points. All the COM support is handled internally by the Framework. Don't rely on it doing anything specific other than supporting creation of managed objects as COM objects. regards, George Tag: Visual C# General Text file symbols Visual C#
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- Debug vs Release TilakGopi, As I mentioned, I get the correct return code of 0 when in debug mode. Always 10 in Release mode. Thank you, Kevin Tag: Visual C# General Text file symbols Visual C#
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- AppDomain creates confusion Hi, When you execute any windows application, windows allocates resources for that application and runs that application within a logical boundry called process. That application is then supposed to run within that boundry and use those specified resources only. If application is crashed or is unable to serve the request we can terminate it by killing the process (i.e. in Task Manager we say end-task). .Net run-time has provided a further isolation by providing Application Domains. Application Domains run within process and they can have nested application domains. .Net assemblies run within those domains. Say, if a perticular application is not responding, then you can terminate that specified AppDomain without terminating the whole process. This helps when you are calling code from any third party dll and when that dll stop responding, you can easily unload it, without terminating your whole apploication. This way, AppDomain provides reliability and security to .Net assemblies. Mayur Tendulkar Microsoft Student Partner Tag: Visual C# General Text file symbols Visual C#
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- MAPI in C# ? Another possible solution would be to use active directory to find the users email address. Personally I hate MAPI - had loads of issues with it, System.Mail.Net is they way I would go! Ross Dargan (blog.the-dargans.co.uk) Tag: Visual C# General Text file symbols Visual C#
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- watch if the file size change thank you for your swift and helpful answers Tag: Visual C# General Text file symbols Visual C#
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- Solution Explorer where did New Folder go? It appears that in visual Studio 2005, the new folder feature found in visual studio solution explorer has been replaced with "new filter". While I find filters fun and nice to use, I find this feature not able to do what I could with the new folder feature in 2003 We basically have a very large project and we want to create "sub-folders" off of that project as to group the different areas. An example would be something like... Toy Store Project Balls - In this "sub folder" is all the .cpp, .h, and resx files etc having to do with balls Video Games - in this "sub folder" is all the .cpp, .h, and resx files having to do with video games. Matchbox Cars - and finally in this sub folder would be all the .cpp, .h, and resx files having to do with matchbox cars. I realize I am using .cpp etc.... because I looked and didn't see a ide of c++ but figured it would be close to c#'s IDE. Does anyone else miss the sub folder feature Is there a switch or some method to turn it back on Still No feedback Surely someone has to know the answer for this Tag: Visual C# General Text file symbols Visual C#
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- Interface, Static Events?? uncle hammy wrote: Yes, I could. I was hoping for an interface way around it, because some of my business classes already inherit another class (i.e. Contact and Employee both inherit the abstract class Person). An interface approach to what you want to do is essentially impossible. A virtual table is used lookup the "inherited" interface members. Static classes don't have a virtual table and static methods aren't in a virtual table for instance classes. Yes, the framework could be changed to accommodate that; but it's not likely that that will happen. Tag: Visual C# General Text file symbols Visual C#
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- HELP Needed on COM Interop Hi All, Need help with COM Interop. I am trying to use interop and perform automation on a COM DLL. In the process, i need to type cast an Object into a Class specified in COM DLL. When i do the same in VB it works fine. However when i typecast using C# , i get the following exception. System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to class type '<ClassName>'. 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. i get the same exception when i try to typecast to the interface. Surprisingly, since i donot need to typecast in VB explicity, i am able to typecast. Can you please help me nail this. Am i doing something wrong Regards, Swaroop PS: am trying to perfrom automation of a COM Dll that comes with a tool called Extensis Portfolio. Tag: Visual C# General Text file symbols Visual C#
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- events and handlers To unsubscribe from an event, use '-=' in the same way you use '+=' to subscribe to it. Code Snippet instanceOfX.SomeEvent += A1.SomeEventHandler; instanceOfX.SomeEvent += A2.SomeEventHandler; instanceOfX.SomeEvent += A3.SomeEventhandler; //when you remove all references to A2 and A3 in A1's event handler, just call instanceOfX.SomeEvent -= A2.SomeEventHandler; instanceOfX.SomeEvent -= A3.SomeEventHandler; Unfortunately for your needs, in my tests here if you do that from within A1's handler, A2 and A3 will still get called for the current event. They are removed for the next time the event is raised. The only way I figured out how to do what you want is to throw an exception in A1's handler and have a try/catch block around the code that raises the event in X. Code Snippet //somewhere in code called from A1's handler: instanceOfX.SomeEvent -= A2.SomeEventHandler; instanceOfX.SomeEvent -= A3.SomeEventHandler; throw new StopEventException(); //custom exception--A2 and A3 are never called //in the code that raises SomeEvent in X: try { SomeEvent(); } catch ( StopEventException e ) {} This keeps A2 and A3 from executing during the event dispatch. Hope that helps! Great question... had fun investigating. Art Tag: Visual C# General Text file symbols Visual C#
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- Help - command line error MIDL1003 Hi, can anyone help me, i am trying to create MSHtmHstInterop.dll but im getting this error and i dont know what it means or how to fix it c:\program files\microsoft sdks\windows\v6.0\bin\xmldom.idl(22) : fatal error C1 034: idispids.h: no include path set midl : command line error MIDL1003 : error returned by the C preprocessor (2) Tag: Visual C# General Text file symbols Visual C#
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- How do I transfer data to an Excel file Seems difficult to visualize your problem as your DEMO works... Ok, can you please do one thing , if your demo works then please add Microsoft.Office.Interop.Excel.dll from your DEMO project's bin/debug folder in your main application and check if it works... i am suggesting this because you said that this dll name/path is diff in your main app than your DEMO app.. Give it a try and inform me the result, HTH, Tag: Visual C# General Text file symbols Visual C#
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- Warnings and classes Yes it matters. If the class was public, the compiler wouldn't know if the field was used by some other project. As long as the class is non-public, the field is only accessible from within the same project (or assembly), where the compiler can determine for sure whether or not the field is being used. Tag: Visual C# General Text file symbols Visual C#
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- Double or single? It depends on what processor you run your application on as to what floating-point format the processor uses. Some floating-point formats on some processors won't match the floating-point formats used by .NET. .NET abstracts that away. If you're looking for performance improvements, try a test with single and another with double and compare the difference in performance on the computers you plan to deploy to. Decide which type you think is best for your needs based on that, not what floating-point format a processor "might" be using. Tag: Visual C# General Text file symbols Visual C#
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- Problem showing int from another class Since Engine is not static, then you should instantiate it, like you did with the Player class. Engine engine = new Engine(); The issue here is that MainCharacter is static, so it is available on the class level, you could set it as instance field (and set it public, or expose it through a public propertylike when you did with level and DisplayLevel property), and then on the main you'll have something like: Engine engine = new Engine(); Console.WriteLine(engine.MainCharacter.DisplayLevel.ToString()); // It will display 1 Console.ReadLine(); Or you can make the engine class itself static, and replace the constructor with a static constructor : static Engine() { MainCharacter.StartingLevel(); } Hope this helped Tag: Visual C# General Text file symbols Visual C#
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- Language suggestion: try using {} catch {} finally {} IsshouFuuraibou wrote: you're code in the second is bad (and even in the first), you should never catch Exception and swallow it. Also, Exceptions will traverse up the stack until it finds the nearest try/catch that catches the type of exception that can be thrown (Hence why catching Exception is a huge mistake). You can catch both exceptions in Reader and Writer with a single Try/Catch. The using statement guarantees that the object being used will be disposed of the moment code leaves the using block. Once you enter the Catch block, you've left the using block and it should dispose the object. Code Snippet try { using (StreamReader Reader = File.OpenText(@"c:\test.txt")) { using (StreamWriter Writer = File.CreateText(@"c:\filtered.txt")) { while (!Reader.EndOfStream) Writer.WriteLine(SomeFilterFunction(Reader.ReadLine())); } } } catch (IOException exc) { // exc should have enough information to figure out what and where the exception was and which caused it. // Just use some logic and analyzed the IOException } catch (...Exception exc) { // Same as before } By catching Exception, you imply that for every single possible Exception ever thrown (and ever made) you know how to handle it, if it occurs inside this try block... including Exceptions that are completely unrecoverable. There are a few that can't be recovered from, and in fact usually can't be caught by your try/catch blocks. I'm sure you don't know how to deal with a stack overflow or memory exceptions by showing a message box and eating the exception. If you do need to catch Exception, if you can't determine how to handle it or if you're just logging/displaying it, throw it again. If you want to consume an Exception, use specific catch blocks so that you consume only exceptions that are explicit. I think the point was regarding "try using" not the specific exceptions being caught (they are just an example). But yes, try using {} catch{} seems pointless when try{using{}}catch{} is available. Tag: Visual C# General Text file symbols Visual C#
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- Hashmap without unique key. Hello. Im trying to make a kind of object like the Hashmap with no unique key that I could loop trough it and get a string and the indexed string. Is actually two strings hash somthing like a datatable with two strings columns. The Dictionary class looked nice (Dictionary<string,string>) but it implements unique key too. Thanks Tag: Visual C# General Text file symbols Visual C#
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- Generic Method Return Type Casting Problem return (T) i; the above statements throws an compile time error " 'T' is a 'type parameter' but is used like a 'variable' " please let me know if above code works in your machine thanks Tag: Visual C# General Text file symbols Visual C#
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- Helptext does not display all objects Say I'm typing 'using System.', I'm expecting to see 'MulticastDelegate' to be displayed from the IDE since the object exists. How come it's not then VS 2005 Pro Edition Tag: Visual C# General Text file symbols Visual C#
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- csc.exe /doc: flag error when generating documentation.xml Lucidquiet wrote: just that the one project in the bigger solution holds two subprojects, that each have an AssemblyInfo.cs in the Properties Folder. Can you clarify Project can't have sub-projects. If you simply have different folders in a project and each folder has an AssemblyInfo.cs, containing the details you posted, you'll get that duplicate attribute error. You should only have one AssemblyInfo.cs per project. Tag: Visual C# General Text file symbols Visual C#
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- Serial Port Well, that really depends on how the printer is connected to the computer. Most printers are connected through the parallel port or USB, not the serial port. Since you say that using LPT1 works it's clear that the printer does not use a COM port. Tag: Visual C# General Text file symbols Visual C#
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- Format Exception I have written a networked system where clients sometimes download data from the server. The clients are run all over the world and I have no control over their regional settings. Some of the clients crash with a Format Exception because dates which they download cannot be parsed on the client side. Is there some way that I can write a DateTime as some sort of universal string which can then be parsed no matter how the client's regional settings are set I was going to resort to sending the a string with the year, month, date, hours, minutes, separated by a delimeter of my own choosing so that I can parse it and set the date piece by piece on the other side, but I would be much happier if there was some convenient one line way. Thanks. Tag: Visual C# General Text file symbols Visual C#
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- Programmatically Sign non-executable files I was under the impression that the signtures used by Windows to detect reliability of the driver had to be signed by Microsoft. Tag: Visual C# General Text file symbols Visual C#
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- Craete a windows Local user Thanks to Both ........ wowwwwwwww msdn is Great .. Cheeeeers Regards, Aamir Tag: Visual C# General Text file symbols Visual C#
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- A Whole Load of Questions... I'm just learning C# so please pardon me if I give the wrong suggestion Couldn't you use the File and Directory classes found in the System.IO namespace to do what you want. The Directory class has a GetFiles method. You could loop through the results calling the Copy method in the File class. Maybe something like this string [] files = System.IO. Directory .GetFiles( @"C:\" , "*.doc" ); foreach ( string file in files) { System.IO. File .Copy(file, @"c:\dest\" + file.Substring(file.LastIndexOf( "\\" ), file.Length - file.LastIndexOf( "\\" )), true ); } Tag: Visual C# General Text file symbols Visual C#
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- Hey please it is so important Help... Try saying " select * from Attorneys where id=1"; if this works then the problem is that the member id dos not contain an id Secondly check if this is correct data source= C:\\Inetpub\\wwwroot\\insite\\App_data\\Database.m db;provider=microsoft.jet.oledb.4.0"; Tag: Visual C# General Text file symbols Visual C#
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- [C#] Waiting for an event to be fired "waiting" for an event defeats the purpose of events. Events are asychronous meaning you can continue executing code and the event handler will be executed when the event is raised. Is this a Forms based application Tag: Visual C# General Text file symbols Visual C#
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- Get Current User Process Hi Guys, im facing annoying problem. i have an application -let us call it MainApp- which is running another application -let us call it ChildApp- and i need the MainApp to check first if the ChildApp is running for the current windows user account or not. i tried to use the Process class but it brings all running application for all users and i need the ChildApp which is running for the current user only. I wish to have reponse asap and wish to include example too. thnx alot Tag: Visual C# General Text file symbols Visual C#
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- Is There Any Overhead to Using a Local Referece Also, code like this: Code Snippet This_Object.That_Object_has_a_Long_Name.X.DoSomething(); This_Object.That_Object_has_a_Long_Name.X.DoSomethingElse(); This_Object.That_Object_has_a_Long_Name.X.DoMore(); is going to be minutely slower than assigning your "X" var and using it, due to the repeated dereferencing through the object tree. Couldn't the compiler optimizer handle both cases by a.) eliminating the additional variable for X and b.) storing a local dereference e.g. register/stack for the longer case shown in your example Tag: Visual C# General Text file symbols Visual C#
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- compile C# file Hi I have just started C# but i got stuck in compiling the program. I write csc.filename.cs in dos command line , but I get following message: error cs2001: source file 'hell.cs' could not be found fatal error cs2008: no inputs specified what's wrong how can I fix it Tag: Visual C# General Text file symbols Visual C#
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Re: Visual C# General Text file symbols
Peter Ritchie
Open the text file with what application, yours
If it's just your application with the problem, how are you reading/writing the data in the text file
Re: Visual C# General Text file symbols
Victor BA
Yes the problems happens in my app, because in Notepad works perfectly.
This is the fragment of code that i use:
FileStream
fs = File.OpenRead(txtArchivo.Text); StreamReader sr = new StreamReader(fs);textBox1.Text = sr.ReadToEnd();
i've seen similar code in books but they didn't mention this could cause problems
Re: Visual C# General Text file symbols
Peter Ritchie
Using StreamReader in that way attempts to decide what encoding is used in the file based upon byte order marks. If no byte order marks are present then it defaults to UTF8. If the text in your file is not stored with UTF8 encoding it will not know how to decode all possible characters in the file (or will decode them incorrectly). If you know what encoding is used for the file, you should specify that by using the StreamReader(Stream, Encoding) constructor.
Using StreamReader in that way attempts to decide what encoding is used in the file based upon byte order marks. If no byte order marks are present then it defaults to UTF8. If the text in your file is not stored with UTF8 encoding it will not know how to decode all possible characters in the file (or will decode them incorrectly). If you know what encoding is used for the file, you should specify that by using the StreamReader(Stream, Encoding) constructor.
Re: Visual C# General Text file symbols
Victor BA
I selected the Encoding.UTF7 and worked, but i was thinking, how would i know which encoding is used on each file that i try to open
is there a way to detect this , so then you select the appropiated encoding method
Re: Visual C# General Text file symbols
Peter Ritchie
That's why byte-order-marks were invented. You can't tell what encoding any other application is using without byte-order-marks. The only thing you can do is assume and document those assumptions for other application programms, if applicable.
That's why byte-order-marks were invented. You can't tell what encoding any other application is using without byte-order-marks. The only thing you can do is assume and document those assumptions for other application programms, if applicable.
Re: Visual C# General Text file symbols
Victor BA
I checked what you said about BOM (byte-order-marks) and used the constructor as following:
StreamReader
(fs,true);
so it can search for the encoding, but that didn't work, then i tried this another form:
StreamReader
(fs,Encoding.Default,true)
and that works, but only because the Encoding is set to default, still works if i remove the "true" setting, so is not affecting.
i'm i using the correct way to set BOM or what i'm i doing wrong
Re: Visual C# General Text file symbols
Peter Ritchie
StreamReader(fs,true) is effectively the same as StreamReader(fs, Encoding.UTF8, true).
When use use Encoding.Default it will use whatever codepage Window has loaded for your system to decide what Encoding to use.