Does anyone know of any GOOD network programming book(s) that are C# based, as well as any online tutorials and forums on network programming? Thanks ...more >>

I am designing a Winforms app, using the NetAdvantage (Infragistics) controls - which are very good. How can I make multiple different contents in my content pane?? ie. In Outlook, there is a content pane, which displays multiple different formats (one for Calendar, one for Notes, one for M...more >>

If I am presenting a DataGrid to the user in which the contents cannot be changed, is there a way to have the data automatically bound? I want to issue a freeform select statement and have the data populate a DataGrid, but I do not want to have to config each column with the details of the dat...more >>

im fairly new to c# but im trying to display some text in a textbox and i get the error "Cant access nonstatic member from outer type "Server.Form1" via nested type "Server.Form1.SocketPacket" code: - public class SocketPacket { public Socket thisSocket = null; public byte[] byte...more >>

Iam wondering why I can do DateTime[] a = {}; but Iam not allowed to do: DateTime[ , ] b = { {}, {} }; instead I have to write: DateTime[ , ]b={{new DateTime()},{new DateTime()}}; this isn't very consistent. ...more >>

Iam wondering what the benefit of using const over static readonly is. static readonly is a runtime constant and can be set once in the initializer or the static ctor, whereas const is suffering from binary incompatibility since it is hardbaked into the binary. I do not believe there is a ...more >>

My app has a notify Icon, but after the app exits, the Icon is still visible, and then when I runthe app multiple times I get multiple icons so that my status bas keeps accumulating them to the point it becomes un-usable. The only fix I have found is to re-boot. Not a godd solution. How do...more >>

Hello All, I'm having problems creating a page with dynamic checkboxes in a WebApp. In my app, I need to query a database, then (based on results) add checkboxes to my form and set their "Checked" state. Since the controls are dynamically created, I'm using the OnInit event to create the check...more >>

I've got a project where I need a client application to perform a "challenge/response" from the client to the server via webmethods to authenticate and pass data so that the session cannot be replayed if someone captures the data stream. I've played around with RijndaelManaged in the past b...more >>

Hi there, I'm trying to import the following files as web reference: http://216.18.68.93:9999/CollectionWsInterface.wsdl The hosted web service was not created with Visual Studio.net. Could any of you import it into a project and tell me why I cannot invoke the "getSimpleCollecti...more >>

I am using the IBM DB2 Connector class of the Redistributable DB2 Run-Time Client Lite in a c# .net application using Visual Studio. Running the code: string myConnString = "DATABASE=192.168.1.43;UID=XXXX;PWD=XXXX"; DB2Connection myConnection = new DB2Connection(myConnString); myC...more >>

I have a Person object and from that I'm inheriting other objects including Client, Carer, Doctor (and others). The Person object has a large number of properties and methods that I want available in Client, Carer and Doctor. Person <- Client Person <- Carer Person <- Docto...more >>

Hi NG. I looked after an "exit(par)" language construct, but it's not include in C#. How do you solve that in elegant manner? A bunch of conditionals to omit the code after some place, where a "bad condition" occured, is awfull. Regards, flemming ...more >>

Hi all, Situation: Windows Forms, DataGrid, CSharp, WinXP Pro, VS 2003 How can I add a click event to an Image? The Imageis in a DataGrid, drawn with the 'DrawImage' mehtod. The Image does not seem to have a click event! [Using a PictureBox instead of an Image resulted in buggy drawings.] ...more >>

ahoy lads, whatz a regular expression to validate the AssemblyVersionAttribute version part. ie i want to validate a string is in the format 12.3.* or 3.4.0.0 I have ^([0-9])((\\.[0-9]))(((\\.\\*)|((\\.[0-9]))((\\.[0-9])))) but it doesn't fails on 12.3.* because of the 12 but will validate...more >>

How do I change the IDE's back color from white to some other color? Thanks ...more >>

Hey Guys, I am looking to develop a simple infact a very simple Operating System, to submit as my BS final project, which can independently start the computer and some simple application which are supported by it like simple text document. but these are secondry phases. First I need to deve...more >>

Hi, is there a way to put " (double quote) into a verbatin string? thank you...more >>

Hi, is there a way to put " (double quote) into a verbatin string? thank you...more >>

Hello everybody, I need help on how to use the same datase in two different form, this is the scenario: at the first form I load a big dataset (ds1) for short, but I not want to load it again at the second form at some point I use a second form Form f = new FormX(); f.ShowDialog(); at ...more >>

Hi, I am trying to write an app that will run on XP Home (ie. no IIS), using MSDE, but which will sync to SQL CE. Can anyone offer some pointers or code samples (prefer C#), on how to do this. All the articles I can find seem to suggest using replication, or RDA, but both appear to use I...more >>

hi, [code] System.Collections.ArrayList a = new ArrayList(); Button b = new Button(); b.Top= 40; b.Left= 30; b.Parent= this; b.Text ="blah blah blah"; a.Add(b); b.Text= (Button)a[0].text; [/code] \c\Form1.cs(1...more >>

I want to add an textare into my program like in html but i saw there is no such class as textarea are there anyway to create it? Thanks *-----------------------* Posted at: www.GroupSrv.com *-----------------------*...more >>

I am writing a program that must be run on a specific server due to its dependancy on the application we are writing for. VS .NET is installed on my laptop and I installed the Remote Debugging components on the server. Now how do I debug my program while running it on the server? It is a Co...more >>

I have an application that has a main thread and a worker thread. From time to time, the main thread, because of user input, needs to notify the worker thread to execute an extra bit of code, in addition to it's normal work load. I created 5 AutoResetEvent objects and have the main thread ca...more >>

In VB, you could start manipulating a controls properites and methods just by using the statement With <control name> ..Text=gnkn end with Does anyone know if there is anything similar in C# ...more >>

Hello all. I'm trying to find the right group to post this to and since it's a coding question (of sorts), hopefully this is the right place. I'm attempting to run an LDAP query to return the Recipient Update Policies on an Exchange server using the DirectorySearcher class, but it's not retu...more >>

In C# is there any way to use the concept of delegates to have multiple = implementations of a particular block of code, so that you can choose = between them without the overhead of possibly expensive if() or switch() = logic, and without the overhead of a function call? As an example, consid...more >>

I'm looking at a bunch of code which has lots of class fields converted into properties with just the simplest code: private int empID; public int empID { get { return empID; } set { empID = value; } } My question is, isn't this useless and inefficient? I can't see any benefit to this ...more >>

Dear experts, this time my problem is, that I will have objects of 3 different classes, which all should receive their events without knowing each other. In real life the following happens: I have three fingerprints which are waiting for a finger to be put on sensor. As soon as the firs...more >>

The short version is that when the theme is changed my application barfs. The problem is a control I've created to host the WebBrowser control and implement all the com callbacks for browser customisation. The problem only occurs when it's present. I'll fix it, but first I need detailed in...more >>

Hello, I'm trying to convert a VB.Net app into C#. The VB app calls functions in an unmanaged DLL. I'm able to call most of the functions in the DLL from C# with the exception of the one below: in VB.Net, the unmanaged function is declared through an interop as: Public Overridable Functio...more >>

A different question this time. I have a DataGrid bound to a collection. Is there any way for me to allow sorting? The DataGrid.AllowSorting=true doesn't work, but that's probably because it can't assume the data types and thus can't sort them. I thought about implementing IComparable, but I d...more >>

In a c# program, how would you get the default program associated with the ".PDF" extensions and then get that program to execuete the program using the PDF file? Thanks in advance bob -- Robert Neal West Palm Beach, FL USA...more >>

How can I move controls and set their forecolor and font size in code on the fly? ...more >>

Using the CodeDom namespace, how do you create a blank line in a method primarily for formatting? Without it, autogenerated code is challenging to read. I tried something like: //Assume method is an instance of CodeMemberMethod. method.Statements.Add(new CodeExpressionStatement(new CodeExp...more >>

I don't know if there is a solution to this question. Situation: With MS Access I made a database. In table 1 I have a column MainID that is the a primary key. This column uses autonummering. This means that the nummering is taken care of without me writing any code. In table 2 I also hav...more >>

I don't know if there is a solution to this question. Situation: With MS Access I made a database. In table 1 I have a column MainID that is the a primary key. This column uses autonummering. This means that the nummering is taken care of without me writing any code. In table 2 I also hav...more >>

I don't know if there is a solution to this question, but I am hoping there is. What I would like to know is the follow. I made thru Access a database with 1 tablel having a primary key (column is called mainID) and another table having a foreigner key (using OleDB statements to read ...more >>

Hi all: I installed DotNet Framework beta 2.0. My web service program stop working in debug mode under VS 2003. I took all steps that Microsoft help page suggest, and none of them are working for me. At the end, I took a look at IIS web configurations app mappings property, and found all as...more >>

I wrote an application on my dev machine ( XP, Office 2002 ) that uses the Excel type library 10.0 Now I want to deploy on a machine that runs w2k, Office 2000...that's type 9.0 right? How can I deploy? -- incognito...updated almost daily http://kentpsychedelic.blogspot.com Te...more >>

Hi i have been using c# for over an year and I would like to get a good book to start on Object orientation with patterns Also I would appreciate if someone could point me to a good book on designing solutions/projects using OOP i.e how to go about creating classes etc thanks for...more >>

Why doesn't something like this work? I get "a constant value is expected" on all 3 case statements. private DataGrid CurrentDataGrid(DataGrid firstDg, DataGrid secondDg) { try { switch (true) { case firstDg.Items.Count != 0 & secondDg.Items.Count != 0: throw new Exception(); break; ca...more >>

I have a VB background and am developing a new windows app in Csharp. I'm getting the error. 'inaccessible due to its protection level' I've added a TextBox1 and a Button1 to a form. I double click the Button1 button. inside the method I type string strName; strName = TextBox1.text;...more >>

Thanks in advanced for your help I've added a TextBox1 and Button1 to a form in C# in VS.net 2003. When I double click on the Button1 at design time, a private method ButtonClick. I've defined a local variable inside the ButtonClick event named 'string strSample;' { string strSamp...more >>

I am currently writing a Windows service which monitors multiple folders and processes the files in them accordingly. The folders to be monitored are stored in a string array. I can think of 2 ways of determining which folder has had the file dropped into it and was wondering if there was a be...more >>

Hi, I want to create a type that behaves like in integer but only allows assignment of say 3 digit integers where attempts to assign values greater or loess will throw an exception. E.g. int threeDigitInteget = 7; will throw an exception. I can achive this behaviour through the new types...more >>

Hello all, Am interested in doing on Image SlideShow. The user will add some photos into a ListBox and then press Start Slide Show and it will then display these selected photos in a SlideShow. However, is it possible to do it like it was a screensaver? In other words, with the image goi...more >>

Hi, I am sorting an arrayList using a custom comparer, but it sort the element in a uncommon fashion. Take a look at this code. using System; namespace ConsoleApplication8 { /// <summary> /// Summary description for Class1. /// </summary> class Class1 { ...more >>