What is the syntax to over ride the array index operator '[]'? I want to derive a class from CollectionBase and have it encapsulate an array of another class I'm working with. Among other things, it needs to over ride the [] operator but I don't seem to be able to get the syntax quite right...more >>

I'd like to display the keyboard navigation indicators in my C# application without the user having to press the Alt key and regardless of the machines global setting (Hide keyboard navigation indicators until I use the ALT key)... Is there a way to programatically turn on/off keyboard navigat...more >>

Hey. Is it possible somehow to persist the call stack, heap, program data...everything. Then at a later time load it again and continue work. The idea is actually to send it all over network in a pervasive research project, so that one program can be used on one computer and "instantly" c...more >>

I thought interfaces have no implementation so how can I create a DataReader from an IDataReader Interface and use it similarly to how I would use an OleDBDataReader? How is it that the block of code below actually functions? Does IDataReader have an implementation or not? Thanks in advance. ...more >>

A simple way to do this is VB.NET is like this: lvwIndex.Columns.Item(e.Column).Text = _ strColHeaderNOArrow & " " & ChrW(&H25B2) I tried to do the same in C# like: lvwProvinces.Columns[e.Column].Text = lvwProvinces.Columns[e.Column].Text + " " + '\u25BC'; however, it displays a...more >>

Hello I am creating a web client in c#. I use the "Add a Web Reference" wizard to read a WSDL file, then I simply call the method for the remote service. I get the floowing error returned when I make the call.: There is an error in XML document (1,454) The source of the error is System.Xml ...more >>

Hello, all. This line has been pestering me, and I can't seem to figure out why the problem is occuring. I'm trying to paint a GraphicsPath onto a Bitmap, using the Graphics class, but it always seems to crash, and throw the "Out of Memory" exception when it comes to the point I need the crea...more >>

In a posting earlier this year I found a simple approach to convert a string to a particular Enum value. The one line solution looked like this: MyEnum ConvertedString = (MyEnum) Enum.Parse(typeof(MyEnum), MyString, true); This is fine if one wants to hardcode each and every Enum in an If-E...more >>

I have a class: ******************************************* public class DecimalType { private decimal first = 0; //original data private decimal data = 0; //current data public bool nullFirst = false; //original Data null public bool nullData = false; ...more >>

Hi, I think this question has an easy answer but I can't seem to find anything online that lists best practices for my problem. I have a C# app that uses an exception handling tree similar to the following. Try { blah blah blah.... } catch(UnauthorizedAccessException noAuth){} catch(In...more >>

does anybody know of a half decent converter????? I tried the "VBConversions VB.Net to C# Converter" with less than satisfactory results, and an unnecisary hole in the bank. ...more >>

Hi, I would like to setup some events tied to the function keys but I'm not sure where to start; any help would be greatly appreciated....more >>

Hi, How do I invoke the random number generator that was suggested by a few people. Ideally, what I would like to do is to instantiate the random no. generator with a seed value that does not repeat the values and that can be called from any class, as I have to call the random number genera...more >>

I am getting a message for my objects that say: testNulls.cs(13,33): error CS0122: 'FtsData.IntType.IntType()' is inaccessible due to its protection level I have a class calling objects out of another class, but same namespace. This is the class that gets the error: ******************...more >>

Hello Friends, I am working on a C# windows Application which generates a crystal report . There is a subreport embedded in the main report . I want this subreport to open automatically in a new tab when the main report is generated and displayed. As of now , since it is an OnDemand report, it ...more >>

How do I turn Caps Lock on, when my form opens?...more >>

In .NET v1.1 I am trying to select multiple files using OpenFileDialog like this OpenFileDialog openFileDialog=new OpenFileDialog(); openFileDialog.Multiselect=true; i f(openFileDialog.ShowDialog() == DialogResult.OK) { ... } Now I discover that there is a hardcoded limit of 200 files...more >>

I have a multiselect listview with an associated context menu. If the user selects several items in the list and then right-clicks one of them is it possible to tell in the handler which item was right-clicked? -- Dave...more >>

Is there a posibility to totally lock posibility to resize window? And to force application not to display a both sided arrow that allows user to resize window? Even when i set maximum and minumum window size the arrow is still visible. Thanks PK ...more >>

let's say i have the following class that was generated using XSD.exe: [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.26")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute(...more >>

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short Total=11; short Index=Total-1; will occurs the following error: error CS0266: Cannot implicitly convert type 'int' to 'short'. An explicit conversion exists (are you missing a cast?) and this is correct: short Index=(short)(Total-1); A bit ugly... ...more >>

Hello Gurus, Pardon me for asking dumb question... I wrote small csharp program to watch a folder for any created text file... When i try to run through debugger and stop after " watcher.EnableRaisingEvents = true;", i manually drag and drop windows text file and this program doesnt seem...more >>

Maybe I am wrong here, but I have a problem with nant that I don't unterstand, I'm trying to compile an example ConsoleApp Project with net-1.1, and get the errror: log4net:ERROR LogLog: Exception while reading ConfigurationSettings. Check your .config file is well formed XML. System.Confi...more >>

Hey folks, I'm trying to use the HttpWebResponse object in an ASP application, but I get a 401 unauthorized error on this line: HttpWebResponse response = (HttpWebResponse)webRequest.GetResponse(); I have: identity impersonate = true authentication mode = windows IIS set to ...more >>

Hi all, I hope this is the correct group to post this to. If not, I apologize. I have an asp.net (c#) project that needs to talk to a COM object. the COM object is actually an .exe that requires elevated permissions to execute. I have tried to set the ASPNET account permissions for th...more >>

Hi, I am using MD5, SHA1, SHA256, SHA384, SHA512 and results are: I am using Encryption data with salt example (http://www.obviex.com/samples/EncryptionWithSalt.aspx) Everything works and results are: MD5 : G+bfg1UoPgaSVABFpLFZzxQ+h6WZkw== SHA1 : gi4jz/elgpXY9fvxAo/HOMw9XPc80aZYEg== ...more >>

Is it possible to listen to when a constructor is called or when a property is set on a object, without having to implement changes in the observed objects class, in dotNet 2.0? It would be very effective for implementing a Model View Control architecture. Perhaps some stuff could be generate...more >>

Hi, I would like to create a custom mouse cursor for my print preview page. I want to use a bitmap of a magnifiying glass with a plus in it. Pretty standard stuff. How do I change the cursor? I found the code below but I just get the default mouse cursor dragging around the bitmap whi...more >>

On enter of my Street Text box, I want all the text in the text box to be selected. At first it works, but if you click with the mouse pointer in the textbox, and then tab out of the text box, then tab back in, the cursor is where the last place the user clicked in the text box. I want all t...more >>

Hi there, Consider this from MSDN *Notes to Inheritors When you derive from DataGridViewCheckBoxCell and add new properties to the derived class, be sure to override the Clone method to copy the new properties during cloning operations. You should also call the base class's Clone method so t...more >>

Hi I want to write a piece of code, that will check if a particular service is running on a particular machine. Can someone give me a pointer as to which classes would be useful?? Any sample code would be appreciated Thanks ...more >>

Hi, How can I create a crystal report from a dataset? I tried to do it like this: this.reportDocument.Load(@"C:\CrystalReportSequenceKetting.rpt"); this.reportDocument.SetDataSource(ds); But then the sql I used to design the report is used for the reportdata. Thanks in advance, Jo...more >>

I am wondering if there is a way (maybe via Marshalling ) to pass an array of Objects of some C# defined class to VB. I am already launching a C# form from VB with simple call backs using a basic interface. Now what I need is nice way to pass back an array of a certain type of class. //Some ...more >>

Hi, I am trying to convert a group of wmf files to gif files. Easy you'd think? I'm using the following code: Image img = Image.FromFile (this.tbxFilename.Text); string filename = this.tbxFilename.Text.Replace ("wmf", "gif"); img.Save (filename, ImageFormat.Gif); When I look at the gif...more >>

How can I do to web.config to be permanent(Wont be unistalled)? thanks....more >>

Hello friends, I am new to Vs.net and C# development environment... I wanted to know, how to change the background color of tabcontrol (which is set bydefault to systemcolor.control).. i want to set it to something like a khaki or steel blue... there isnt a backcolor property for tabcontrol,...more >>

Hi, I am experiencing some problems running a .net exe placed on a network drive. File IO operations and access to reg db results in access denied exceptions. If I run the same program from a location locally on my machine I do not have any problems... Anyone who knows why? rgds Jesper...more >>

I have an abstract base class with an enum which is passed into a method. I want my derived classes to be able to add new values to the enum without having to redefine it and I want to be able to pass them into the method defined into the base class. Is there a way to do this. E.g. abstr...more >>

In my engineering class we're discussing microprocessor branch predictors. Is it possible to write a Windows application (anything whatsoever) that would allow me see how branch prediction is done in C# or if it implements some type of Branch Target Buffer? Any help would be appreciated. Th...more >>

How can the CallConvCdecl class be used? MSDN says it is for compiler writers. Can a mere mortal use it? ...more >>

Was just curious if anyone knew how they created the cool interface ( I'm just talking about the stainless steel looking one with round butttons). Looks like it could be .net thing. thanks ...more >>

Hi When i try to create one web application project i got internal server error. How can i overcome this. Expecting your reply Thanks UK ...more >>

hi guys, this is virendra. I am in big trouble to handle date situation using where clause. i am using ormapper. if the sqlserver and application server has different date format(different culture) then i am getting a error. datetime overflow. How i can handle this situation. ex: DateT...more >>

Hi, I'm using multiple times the for loop in my application. All times I start with int i = 0. VS says that I can only use the i once. So, now I'm using i, j, h and x... is there a better way?... I like to use the same variable or an other method. Thanks! ...more >>

hi all, I try to use the shell32 to enum the network adapters that installed on my computer, it works, but I want to get more details about them, such as the device's type, device's name ..., how shall I do else? I use the code as follow: const string folderPathStr = "{7007ACC7...more >>

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