I am having trouble updating the text in a C# form textbox from outside the class. Calling function ChangeDisplay from inside the class ControlPanel works fine, but when I call it from the main program, it doesn't update. I have declared the variable in another class called global vars, which ...more >>

Are there any good reccomendations for places on the web with free tutorials and information on how to learn C#?...more >>

Can anybody point me towards a sample of serializing/deserializing specific classes that are derived from a generic class? Is it necessary to use a switch statement or can it be done in a more extensible way?...more >>

hello question 1: I have the following code below but the funny thing is that Session only works when I invoke it from the server side.. When I call this session from client (winform app) I don't get an inrementation instead only 0... I don't know why.. question 2: for somereason I do...more >>

Hi All - So I now have my C# app out in user land, thanks to the many replies on this thread! Anyway, I'd like to come up with a "Plugin" type of mechanism for it, whereby the app looks in it's directory for any dlls it doesn't know about (know how to do that part) and then (the part I don't ...more >>

Hi! I am trying to determine if the DataRow of one dataset contains the same data as the DataRow of another. I figured I can extract ItemArray's from each dataset and then compare them. 1) Is this the fastest way? I will have to loop through thousands of rows for what I am doing. 2) How ...more >>

Gentlemen, I realized that code security can easily be corrupted by cheap decompilers. What does Microsoft suggest using to disable or at the least make it impossible for the intruder to reverse engineer DLLs or EXEs. Thanks, Yama Kamyar...more >>

My general question is: How does one determine the font of a System.Windows.Form.MenuItem? I have a custom MenuItem where I have set OwnerDraw = true, and hence the implementations of DrawItem and MeasureItem. With a menuitem, there is nothing like menuItem.Font to get the current Font. Th...more >>

Just wondering whether we can only develop once and compile it for the different platforms: windows and pocket pc. Is it possible? welcome any suggestion. Thanks in advance. ...more >>

Hello group, does anybody knows a way to add Japanese language to a western language based application? Our software is switch-able between English and France. Now I got the job to add Japanese to the application. But when I put Japanese strings from MS Word per drag and drop into the te...more >>

Hi, Which one of these below two is a better way to find out if the string is of zero length? string.Length == 0 or string.Length < 0 Alwin S....more >>

How can I read lines from an XML file. & add them to a counter. If possible, words between <page> <\page> is considered as +1 to my counter. if it isnt possible, I would atlest like to read until the word "explorer" then add it (+1) to my counter, then read next word, and so on. Example...more >>

I want to Play a sound file that of .wav . But without using of Windows Media Player Lib. ...more >>

Hi, It seems that the way reflection resolves methods is not quite the same as default CLR. For example this simple class: class Test { public void Hello(string name) { Console.WriteLine("Hello(string)"); } public void Hello(object obj) { Console.WriteLine("He...more >>

I'm baffled by something. I want to turn an ArrayList (which stores strings) into an array of strings. I know I can use the ToArray method and pass in a type. But I can't get the code right. Any help here? Am I supposed to pass in a Type? ArrayList myarr; myarr.Add("foo"); myarr.Add("goo"...more >>

I am trying to build a MDI windows form, with child including some stuff, but it seems to be impossible to have BackColor property set to Color.Transparent. Is it existing any solution to have the background of a child window of MDI transparent? Thanks François *-----------------------...more >>

Hi I use these two properties to have nothing except the content of the window form on the display : // Removing the maximize, minimize and close in the titlebar frmTabrows.ControlBox = false; // Remove the 3d border and the titlebar frmTabrows.FormBorderStyle = System.Windows.Forms.FormBo...more >>

I have to loard an XML document and modify it cotent in C# here is my source code. but it writen in VB.NET because i had some PB when i tried to get to à specific TAG of my XML document. i dont know excactly how to write this instructions in C# : doc.Item("Configuration").Item("Extensions"...more >>

Hello I need to ask something? Do I need Visual Studio .NET if I want to work with C# or is there any free software I can use. Thanks....more >>

I have a DataGrid sourced by a DataView of a DataTable, and I would like to output the results of any RowFilter operations to a text file. I thought this would be easy but I cannot find where to obtain all the filtered rows? If I reference the tables rows I get every single record, and the Dat...more >>

I have a DataGrid bound to a DataTable and I'd like to have one row of totals. I was hoping that I can have a row on the bottom of the DataGrid's results which will always be visible (no matter how you scroll and no matter how you filter the table) which adds up values in particular columns. ...more >>

Hi, i am trying to run a simple SQL statement from my C# app to return a number of records, however when i do my record count is always zero, but i know there are transactions in there... My code is as follows... "SELECT * FROM " + Table + " WHERE Date >=" + "#" + DateFrom.ToShortDateString...more >>

Hi there, I'm very new to dot net programming and webservices programming. I've managed to create simple webservices so far. Here's my problem: -I've been given a project which needs to have a proprietary algorithm split into a webservice. -The program consuming the webservice needs ...more >>

Hi, How do I access folder properties? For example, in XP, when I do a right-click->properties on any folder, it will show me Size, Size on Disk, Location etc How do I access these information? Thanks ...more >>

I'm coming from java where everything is supposed to be a method, so please go easy on a newbie. I'm learning C#/.NET and am a bit confused as to what makes up a property and what makes up a method. Does anyone have any ideas on a methodology for this? Like I say I'm used to java where you h...more >>

Hi friends! Could we add some codes to start up sql server instead of manual? Thanks ...more >>

I need free e-book about threading in c#... Does anyone has or knows where I can find it??? ...more >>

Thanks to a tremendous amount of patient help from Rob over in the interop group I have managed to successfully wrap a vendor-provided DLL and call it successfully from managed C# code. Now I'd like to process the data returned, a void* buffer which I have "cast" into a byte[] on the C# side. ...more >>

Hi, how can I launch default mail client from my application, after users click? It should give subject and my email to outlook (or some other client)....more >>

is there a way to convert a byte to a bit string? For Instance if the value of the byte is 104; then I would like to convert that to a bit string of '1101000'?...more >>

Is it possible to monitor and limit the number of concurrent users that can run a .net application from a server? Thanks, Dennis ...more >>

Hi, I need some help about filling dataset, I am not sure how to describe it, so I give the example here. da = new OleDbDataAdapter("SELECT * FROM Path WHERE PathID=1", cnn); da.Fill(DataSet, "Path"); this is the code of current DataAdapter filling up a DataSet. What I wanted to ...more >>

Hello, Has anyone figured out how to call a Servlet from a C# Web Service? Thanks in advance, Michael......more >>

I have another problem, maybe it is simple to fix. I have this: byte[] Test=new byte[100]; But I now want to have a second pointer Test2 to point to a location inside this Test. But with no copying. Something like this. byte[] Test2=&Test[66]; The intentions is that Test2[0]...more >>

I want to be able to change the values in a SortedList, I tried doing a foreach but it doesn't let me modify the DictionaryEntry. So How do I go about changing the values of a SortedList as I loop through it? Thanks...more >>

Hi, I have to pass an array containing a structure from a C# library to a C DLL. Which is the best way to do it? Hashtable or ArrayList or anyother better way. Also, how do i marshal and then retreive the data at the C end. Thanks...more >>

hi, It might be the simple question. I am concatinating two string and displaying in messagebox. Ex: MessageBox.show(string.Concat("The following validation(s) failed:\n", arg.DisplayMessage)) But I have overloaded my messageBox for my project style. When the message is displayed it...more >>

Being new to .NET, prompts this question: Why is it that when I open one of my .aspx pages (it only happens with one of them), it always gets marked with the * to save changes...right after I open the file? Is there something on the page that I haven't done yet? I find it odd...any insight is ...more >>

System.Diagnostics.Process.Start("c:\\windows\\system32\\notepad.exe","c:\\x.txt"); launches x.txt in notepad What code will close this instance of notepad? ...more >>

The Process.Start( ) method below works correctly. System.Diagnostics.Process.Start("c:\\program files\\adobe\\acrobat 6.0\\reader\\acrord32.exe",@"/t ""c:\exportfiles\d.pdf"" ""HP LaserJet 3300 Series PCL 6"" ""HP LaserJet 3300 Series PCL 6"" ""DOT4_001"""); I need to substitute a varia...more >>

I am converting a VB6 app to C# and the VB6 app has 1 connection and 3 recordsets, all global and open all the time so that all the required procedures can use them. Using C#, would it be best to have a global connection and datareaders etc, or is it better to put all the db stuff into a sepera...more >>

Hi, I'm trying to convert a byte array to string --This works... System.BitConverter.ToString(bytes) "EB-55-79-20-18-B2-76-4D-85-0A-93-6B-97-33-31-B8" --This doesn't, but returns "System.Byte[]". How do I do this with System.Convert.ToString()??? System.Convert.ToString(bytes) "Sys...more >>

Hi, I have a class which all its attributes, properties and methods are static. However, I want a method to return an object that should be non-static. Is that possible? thx, Pascal...more >>

I wish to control other threads, that are warped with my own classes, so when they are in any wait state (lock(), Monitor.Wait(), ReadWriteLock.Wait(), Mutex.Wait(), AutoResetEvent.Wait(), ManualResetEvent.Wait()) I’ll be able to take them out of the wait state even if the object which they ...more >>

I have the following .cs file: Hope you can read the code In the Main() I want to pass the PathName and FileName and have the FileStream object do a read, and return it into a string. I can get intellisense to recognize Source.ReadSourceFile, but I haven't figured out away to pass the par...more >>

Hi I finaly managed to insert text and images with rtf in a richtextbox but how are links done? I would like to create a link that displays Accept like in msn so the DetectUrls isn't really an option :). I saw in a rtf made in word that they use \field and such so I tried to do some stuff wi...more >>

Hi, I am creating a model to navigate a tree of symbols and links. My main purpose of this post is to ascertain the quickest way of navigating the tree. There are two ways that I am considering, see below. I am unsure why you would implement interfaces in this design? Is it a performance issu...more >>

To all, I've tried to use System.IO.File.Move (srcFile, desFile); but there is an exception similar to this : The process can't access desFile because it's being used by another process I think that it's strange since I've already closed the FileStreams associated to all available files al...more >>

ODD TOPIC Hi, Pardon me for this post, sent here for larger active users. Will try to keep the question simple. What WS-Address (mechanism) is used to specify a client that needs a WS Server to send data to the client ( via "Reply To" or whatever method ) BUT the client is behind a fir...more >>