Hi, I have a database application. In the beginning a user is connected to the database. Here I want to check if the user input correct password and user name, but I haven't find any exception for this concrete task. Is there any specific exception for this purpose or I have to use SqlExcepti...more >>

In Winforms, in Visual Studio, how does one add multiple event handlers in the properties box for let's say, a textbox TextChanged event? Thanks in advance. Adam ...more >>

Hola. Instale el asp.net 2.0 con el VWD y en la pagina de asp.net hay un tutorial de como hacer una aplicacion. todo iba bien hasta que llegue a la parte de Administracion Web Tool. El problema es que me da problemas con la conexion a la hora del setup de esta fase. Me dice que no encuentra...more >>

Hi everyone, Is there any way to inform at runtime the name of the Dll that I want to be loaded using DllImport or DllImportAttribute ? Thanks in advance. Elisabete ...more >>

Hello, my question is, if it's possible to "dynamical" cast? at the moment my print() method looks like this: public void print(Object obj) { if (obj is TypeA) ((TypeA)obj).print(); if (obj is TypeB) ((TypeB)obj).print(); if (obj is TypeC) ((TypeC...more >>

Hi, I would like to use a System.Collections.Queue which is constant size - if it is full, it should fail to add new items instead of growing automatically. I looked at the help, and thought that a growth factor of 1.0 would do this. However, it doesn't seem to have worked. Is there any way...more >>

hi all, hope some one can help me, this prob is driving me mad. im using sockets to communicate between a client and a server. I don't' have control over the client and how it sends the data so i have had to try and work out how it is doing it. From what i can see it is sending the data ...more >>

Dear all, I need a component that is capable of: - Displaying cells - Cells must be customizable in color backcolor width and font - entire row selection - no headers With the ListView I could manage except for the last requirement. Is there any other component that might do the trick? ...more >>

hi to all folks, i want to create the following senario: i have a T1 (Thread 1) that acts like http server that receives incoming requests. From that T1, i want to spawn from T1 to Tn thread jobs and beeing able to be notified when each of these threads finished it's job. I would lik...more >>

Hi, I'm trying to call a static method on a class type that is passed into a method through generics, for example: public bool Test<TestStaticType>() where TestStaticType : TestStaticBase, new() { return TestStaticType.Foo(); // <-- The error is produced here } It's giving me the f...more >>

Hello, how can i do this: i have textbox, but i want that only numbers is possible to write in this text box. Thanks Lubos ...more >>

Hello, how can i do this: ...more >>

Hi there, I have a function, converted from VB, that is passed an object, and sets it up. The object passed is either a ListBox or a ComboBox. The code checks to make sure that the object passed is one of the two types, and then does some work. I provide a cut-down version (the first code)....more >>

This is too weird. You're going to love this one. I just ran across the most bizarre DotNet "feature" with the String.Split() method. You are supposed to pass it an array of characters to tell it what separators to split the string on. if it finds any of those characters, it treats that...more >>

What is the difference between indexers and indexed properties (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/csref/html/vcwlkindexedpropertiestutorial.asp)? I don't see what the problem is with using plain indexers is. Let's just say I'm confused. :P...more >>

I'm using hashtables to transport data between layers in my app, but in so doing, it seems almost impossible to avoid unboxing. private static BusinessObject PackageBusinessObject(Hashtable myHashtable) { if(myHashtable!=null) { BusinessObject myBusinessObject = n...more >>

How to insert a blob arraylist into database? I know it's not good, but my customers want that, so if someone has some simple example of how to do it... Hrcko ...more >>

hello, is there a way to write set&get methods more compact? I have a bout 50 properties that I have to acesss - and that's a lot of redundant code. Another way I can think of is putting the values in a Hashtable. Or are there (big) disadvantages to that? Thanks! ...more >>

Hi, Sorry for the confusing subject, but here is what I am after: I am using the 'System.Drawing.FontStyle' object, and I would like the caller of the function to be able to decide when calling the function what style to use. Hmm even more confusion, methinks. Here is some pseudocode for what ...more >>

I have setup Console redirection within my Console app (via Console.SetOut and Console.SetErrror) to route console WriteLine calls to a logfile. This works just fine with one exception... I use PInvoke to call into several unmanaged DLLs which write diagnostic information out to stdout (an...more >>

I'm working on an existing app that creates an arrayList of errors to populate a log file. I need to get those errors to read them each line by line and import them into tables based on the criteria then create a file for which error was imported into the table. How can i take the arraylist...more >>

Let's say I have a DataRow that I got from DataSet "A". Can I modify = the data in the DataRow and add it to a new DataSet "B" and have it = update the same datasource? I hope this makes sense. Yosh=20 sorry for the multiple post but I wanted the post in this newsgroup...more >>

Send a data structure using Web Services. Data structure looks like: Class Person { int age; string name; Pets pet; } However the age field is optional and the name field is required and must be between 4 and 20 characters. The web service just returns the class i.e [WebMethod] p...more >>

Hi, I am writing an application in C# (VS.NET 2002) that runs performance intensive analyses on data sets. In order to keep the UI responsive I have created a seperate thread to do the analysis. I am using my own DLLS to load the data sets from files and run the analyses. But I have run ...more >>

Hi: I am writing a WinForm app that contains a DataGrid control and a StatusBar control. My goal is to update the status bar using events from a separate class, as well as some other simple things. The method I am writing queries a large dataset. As part of my feedback to the user, I am ...more >>

I am developing an application in .Net C# that needs to restore a number of tool windows to some previous location and size. The problem I have is that when I create the form and set the Location and Size properties before calling the Show method, the form is not created in the Location that I s...more >>

Hi, Beeing used to develope with Delphi (not dotnet), it has become a habit using Delphi's TAction/TActionList. These classes are great for centralizing the code for user commands and in addition great to centralize the user interface elements. Does enyone know if these (or similar) classes...more >>

name += function.Name + " "; How to write this code but with exception to put a function.Name into a new line ? I want to get a string name into a list like this: Function 1 Function 2 .... Hrcko ...more >>

I have a VS.NET windows application which use drag-drop feather. It works fine when application start, but stops working after application run one or two days. The application is related to Video process, CPU/Memory extensive. The drag-drop is in a new windows form. It drags from TreeView Con...more >>

Is it safe to create a static function in a multi threaded application ? As an example, I have a function that logs errors ,exceptions and some informational data public static void Log(....) { // } There are multiple threads in this application that call this function. Is there any advant...more >>

Hello, I have a ListBox control on a form. I add members of a class to the Items collection. They show up and I can select them. The text shown is from my classes ToString override. Now, later on I need to update this item. I find it in the Items collection and update a member used by ...more >>

Hi, I'm trying to check and see if something other than numbers (either the +, -, *, or /) are entered into a textbox, where bigR is what I call the text in the textbox. I can get what was entered and where along the string (the where part is the first section of below). I'm running into tr...more >>

Hi, I have a c++ source code which I can compile to be a DLL (in VS.NET 2003). And I need to use it in a C# program. After I compiled/build the C++ code to a DLL, I add it as a Reference in my C# program. When I look at the reference and I double click to view it in the objec browser ...more >>

I'm trying to validate a text box that complies with the following rules: 1) text can be blank/empty 2) non-blank text shall contain ONLY A-Z and/or 0-9 3) non-blank text shall contain a maximum of 6 characters Here is what I have so far... (^A-Z0-9*$){0,6} Don't look at it too...more >>

Hi Can somebody tell me if I'm right or not The attribute [MethodImpl(MethodImplOptions.Synchronized)] Is like an lock(this) over the Method where i put this Attribute?! If I have two methods like: [MethodImpl(MethodImplOptions.Synchronized)] void method1() {do something;} [MethodImp...more >>

Hi, This question is related with c# and ASP.NET, (I could't find the rigth forum). What I need to do is to add a usercontrol in a row of my table using the server code (I know how to do it on the front-end). The idea is to show the search results on the page, every entry is a usercontro...more >>

Hi! I wounder if it is possible for my windows based application to be moved out on a win 2003 server and to be executable from there? (Perhaps in a terminal service environment) Features of my application: - connectivity to a SQL database - multiple users running synchronously. - cr...more >>

Hi all, I'm looking for the best method to adopt as a replacement to using #INCLUDE. Currently, I have one page with a PANEL that changes the content of the panel (to another web page) depending on what menu option the user has selected. The way I do this currently is with a line of code...more >>

hi all is there anyway in C# or using winAPI that can help me in arranging desktop icons on a small area in the middle of the desktop wallpaper or in more detail can i set the coordinates of each icon as i wish thx all...more >>

Hi I created a windows app to run a dos batch file (which takes around 5mins to complete and generates lots of output messages on the console in the meantime)and i used RedirectStandardOuput to display the output text in a textbox. The problem is that till the batch file has not finished ru...more >>

I need to copy all the data from a one dimensional byte array to a specific column in a two dimensional int array. For example: byte[] byteArray = {4, 5, 6}; int[,] intArray = new int[2, 3]; After copying to the first column in intArray, I want the intArray to have the following data: in...more >>

Hi All, I was using VC++ earlier to register COM Server programmatically. What i do is I use LoadLibrary(Desired COM DLL), then GetProcAddress("DllRegisterServer"), and then call that function using the function pointer that GetProcAddress returns. How do i do that in C#, I tried using the Dl...more >>