Why must I define a remove acessor for an event when I just want to process the add, like to add logging or to verify that a subscriber could indeed subscribe to the said event. ...more >>

I am working on a project for work where I need a specialized type converter to convert the value of a string which is edited in a grid back to the underlying object type from the cell. The value in the cell is displayed as a string from the ToString() method in the class. Anyway, I am trying...more >>

The more knowledgable I get about this .net world, the more questions I have. ..NET uses pass by reference for all objects....uhhh I mean pass by value. (Couldn't resist this jab) Consider a string object whose value is passed as a parameter to a function. The reference is pointing back to ...more >>

Hi all PRO out there, Does any body know how to draw a Circular image or ellipse image or even star shape image base on Existing image. Any help is deeply appreciated. Have a good weekend all of you. Thanks you all so much Kate Luu ...more >>

My English is very pool. I have a window contains some controls that based on "UserControl",now I want print them on a paper,and I want them can keep the true size,it means if had a control with the size "10*10"(inch),I hope in the paper it has the same size "10*10"(inch),and more legible,cont...more >>

I was surprised and somewhat disappointed by the fact that you cannot = declare types in an interface. I discovered this when defining an = interface that included events, where the definition of the delegates = had to be placed outside the definition of the interface. To me, the = delegate defi...more >>

Is there an IRC channel anywhere that's related directly to C# (and is very popular)? -Chris ...more >>

Hi, a c# app of mine that parses 30,000 xml files writes large amounts of data to file (> 2GB) using a streamwriter object (sw). everything works fine except that the memory used by the app grows linearly during execution and eventually crashes the computer. without going into too much ...more >>

What's the best way to set and read ACL's on files and folders using C#? At the moment I am using System.Diagnostics.Process to run cacls.exe however this is proving unreliable and does not meet all of my needs. thanks for any suggestions. Arran ...more >>

Hi This is probably simple, but can anyone explain why this won't work: public void SomeMethod() { //Do stuff } ThreadStart myThreadDelegate = new ThreadStart(SomeMethod); Thread myThread = new Thread(myThreadDelegate); It gives me a "A field initializer cannot reference the...more >>

What would make a C# .NET application do the following? This is the customer's report, and in place of XXX is the name of the program. Sometimes when I go out of the software and later go back [i.e., relaunch the program?] a box comes up and reads 'The feature you are trying to use is on...more >>

When you change the Font property of a RichTextBox, does it change the font of all the contents, or only the text subsequently added, or only the selection, or what? ...more >>

I have a table called Elections where All is Yes/No Title ... ... All I also have a table called HasVoted ID Title And a table called Students Name ID ... ... I need to write a query that finds all the Titles in Election where All = yes and checks to make sure that t...more >>

hi, i have a window form with different controls. i want to loop through all the controls and write the types and lables of each control in a file. I dnt know how to determine the type of a control that wether it is a button, lable or text box. any body out there to help please. thanks in adv...more >>

if i change my rtb to readonly then when a user presses a keyboad key it 'bings'. how do i stop the noise evertime a user presses a key? thanks, Rob ...more >>

if i have an mdi parent with a menu option of View->source and this menu item creates a new child window how do i make a checkmark appear when the child form is loaded and have the checkmark dissapear when the childwindow is closed? and how do i stop a child window from being created more than o...more >>

I need a intereface so that i get the same structure in several arrays that i create. I think that i need to use enum in a interface. Abstract classes don't do the job as i need to inherit from several interfaces. This doesn't Work. Any ideas? using System; namespace well_test { public in...more >>

Hi ! I created a sample library project. In my second project I reference this library and make the following call, which returns "undefined value": Type myType = Type.GetType("SampleLib.MyClass"); My guess was that the function fails because my library isn't loaded yet. So I wrote the ...more >>

Hi A beginner's question. I want to run through a series of instructions over and over until a user hits a button. What's the standard way of making the application process user input whilst it is in a loop like this (i.e., so that it doesn't just get stuck in the loop forever)? I see...more >>

I've got an app that I've written using C# and some type libraries I've generated from some of the directx .IDL files. I have got a problem with calling some of the methods on the generated interfaces. As an example, I've got a method I want to call that has a parameter call reserved, that mu...more >>

I am wondering if anyone has any insights on the performance benefit (or detriment) of declaring local variables instead of referencing members. Is allocating memory for a new variable more efficient than repeatedly referencing the member in a loop? Maybe using a string isn't the best exam...more >>

Which are the disadvantage of use pointers in the code ? In general. I know it turns your code into unsafe code, because even you have to flag it ... but does it still 100% managed code, right ? or it doesn't ? Which are the potential problems I would have ? Do I lose portability ? ...more >>

How can I change the order of DataGrid columns? I have a Master-Detail relationship and the columns in the datagrid look like they are lined up in alphabetical order which is not what I want. ...more >>

Hey Guys, I am trying to develop an application, where people can open and edit word documents and RichTextFiles. I am using RichTextBox for editing.., but I am unable to figure out how to open Word Documents. I figured I need to add some COM library by searching through some forums.. But I wa...more >>

Hi, I've read somewhere that try/catch shoudn't be used as an alternative to if clauses (maybe it was in C++ regi). However, when using XmlNode.SelectSingleNode(XPath expression) to get a node, it throws an exception instead of returning null if the node doesn't excist. I'm a bit tentat...more >>

Hi IO open a file steream for reading , but i want this file to be changed by other application . I trying the following line code to open it for reading only : FileStream Headerfp = new FileStream (path,FileMode.Open,System.IO.FileAccess.Read); but now i can't write to this file from ...more >>

I have been trying for 3 weeks now to make multiple sounds at once using C# targetted to a pocket PC using visual studio 2003. I have been blocked at every turn - mostly because of the mismatch between the managed code model of c# and the underlying CE API and its c++ flavour. All I want ...more >>

I have an app that uses SQL with access. I've been fine through the whole thing until I tried using the UPDATE command. When it gets to ExecuteNonQuery() it tells me that there is no open connection. A few lines before it though I can access the database. I went through the query builder and it ...more >>

- but the program. Hi, I have written a program that needs to be distributed to a larger number of computers in the company where I work. For each distribution I need to check for the precence of .net, and if not I need to install the fxdotnet.exe thing. Next I need to create some k...more >>

The garbage handler in the .NET framework is handy. When objects fall out of scope, they are automatically destroyed, and the programmer doesn't have to worry about deallocating the memory space for those objects. In fact, all the programmer has to worry about is the total sum of objects loaded i...more >>

I want to transfer n number of binary files from a server to a client one by one. I am using TcpListener and TcpClient. Any suggestions? mE...more >>

Hi, all, If I have an array like int[] m = new int[] { 0, 1, 2, 3 }, is there a way I can separate the array into two, like int[] m01 = somefunction?(m,0,2) // m01 will hold 1st and 2nd items in array m int[] m23 = somefunction?(m,2,2) // m23 will hold srd and 4th ite...more >>

Is there a way to write a faster function ? public static bool IsNumber( char Value ) { if (Regex.IsMatch( Value.ToString(), @"^[0-9]+$" )) { return true; } else return false; } I think, if I have to repat this some thousands time, it could beco...more >>

is it possible to determine what language an exe was created in? for example, i am interested in know what language onenote.exe and infopath.exe are written in. ...more >>