Hello, i have a problem with my network code. What i want to do is, send an UDP-packet and check if i get an icmp-reply type 3 (dest. unreachable). the code looks like that so far: .. .. <snip> this.Sock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); ...more >>

I had a module of VB.NET. Now I want to use some of the functions in the module when I develop a c# project. How can I do that? ...more >>

Hello, Is there a way to pass something to the StartProc below for each new thread that I create? Something like 'code' below. Thanks for any comment or advice! static void StartProc( int code ) { if( code > 0 ) { // do something } } Thread t = new Thread(...more >>

Hi I created a small app in Visual C# Express Beta 1. I now want to port it back to Visual C# 2003. Is that possible? I'm have a heck of a time!...more >>

Hi all, Because the programs I work on are intended to be limited to only certain users, I have had several problems concerning people hex'ing out authentication procedures and replacing strings such as the form title with whatever they want. I'm aware that there are many obfuscation and...more >>

I need to access the information in only one column of a datagrid. The column is column[3]. When iterating through the grid I want to find all instances where the entry is "" and change it to read "N". If the entry !+ "" then I want the entry to read "Y". Any ideas on how I can accomplish th...more >>

I loop through the code that looks like this to batch a set of pdf files. Process command = new Process(); command.StartInfo.FileName = "AcroRd32.exe"; command.StartInfo.Arguments = "/p /h " + pdfFileName; command.StartInfo.RedirectStandardOutput = true; command.StartInfo....more >>

Is there a way for C# methods (either in a WinForm or from ASPX) to call a j2ee session bean on another server? If so, are there any web references out there? Thanks. ...more >>

Hi, I want to make a Global CBT Hook, but the CallBack Method is never raised. SetWindowsHookEx return me a Handle to the Hook, but when i try to uninstall the hook the UnhookWindowsHookEx generate an error (1404: Invalid hook handle.). A part of code is this: Install Hook: .... CBTCallBack =...more >>

I have always wondered what finally is actually for. What would be the exact difference between try { somecode1(); } catch(Exception) { somecode2(); } finally { somecode3(); } somecode4(); ..... and .... try { ...more >>

There are InStr in VB What is the C# equivelant of the function InStr in VB? ---------------------------------------------------------------------------- ------------------ SearchString ="XXpXXpXXPXXP" ' String to search in. SearchChar = "P" ' Search for "P". ' Comparison is binary ...more >>

Following is the string ... <ADDRESSINFO name = "Cedar Ave" no = "21123" attrib ="visible"> <HOUSE name ="main" type ="1" value ="2200"/> <HOUSE name ="slide" type ="12" value ="123"/> <HOUSE name ="major" type ="1" value ="1234"/> <HOUSE name ="branch" type ="1" value ="31980"/> </A...more >>

Is this legit? I thought that class members could not be allocated in the class declaration. I thought this had to go into the constructor. If this is OK, what are the associated rules? class WhatEver { private object[] thePair=new object[2]; [STAThread] static void Main(strin...more >>

I have a c# library dll that I want to use from MULTIPLE machines. How do you do this? For example, library.dll is installed in GAC on box1. Now I want box2 to use it also. How does the application on box2 reference the library.dll on box1? What is .Net's replacment for DCOM? Is .Net ...more >>

After giving up on passing nested structs to an unmanaged DLL, I planned that I'd pass a simple buffer of bytes (the same size as the struct) to the dll, convert to a memory stream and read in the fields from that. I've 2 possible DLls to use, one is emulated and the other one is the "real" ...more >>

I know there aren't pointers in C#, well, there are but... you know... I have a situation there I need to have a reference to string a and then later, string b. I hoped I could do something like; <code> string a; string b; string ref refStr = a; // some code, then the switch refStr =...more >>

I can't get to work treeview keypress event. I press Enter and nothing happens. This is a code: private void treeKeyPress(object sender, KeyPressEventArgs e) { if (e.KeyChar == (char)13) { ConnString = "workstation id=HRVOJE;packet size=4096;integrated secur...more >>

Is it possible to restrict where an mdi form can go within the parent form....for example, what if I wanted the parent form to have a panel with a listbox on the left hand side of the form......would it be possible to somehow code it so that any mdi forms would not be allowed to be dragged ove...more >>

I have written a library class which makes calls to an Oracle 8i database. I am using the ODP.NET data provider which is in turn making calls to the \oracleclientdirectory\bin\Oracle.DataAccess.dll which was added as a reference to my library class. Everything in this class works fine. Now...more >>

I need a numericUpDown control to contain a Int variable. Is there a way to do this?...more >>

Hi all, I am creating a application using WebBrowser.It opens almost all the files ..I am not able to open rtf files alone.Can anybody there Please help me on this.Thanks in advance. Regards, hajash ...more >>

Hello, I'm adding an installer to my C# application in Visual Studio .Net, wich works just fine. Although there are some things wich I can't get done... - I want to auto-increment the version number of the installer everytime I build a new release... Is this possible? - I want to show ...more >>

Hi, I have a method that's called from another thread through a delegate. It's checking if (InvokeRequired){} and does BeginInvoke() if true. So it will be executed on the same UI thread. here's the code in question: private void wrkP_OnProcessCompleted(WorkerProcessBalanceEventArgs e) { ...more >>

Hi :-) From the Display Properties->Appearance dialog, it is possible to select a color scheme from a drop down list and change the visual style of XP. Is it possible to select/change color schemes with help from C# or dotnet sdk? regards - Morten - ...more >>

Hiya I've just started experimenting with C# and have a problem with enum. I have created an enumeration as follows: enum Boxes {small, large}; I've placed this just after the namespace qualifier of the Box class (see below) I have a class, called for example Box, to which I want to ...more >>

I am quite new to VSS and I can't figure out how to check in all files that I've checked out in various directories in one shot. Is there a command like that? Because now I have to go and hunt various directories for all the files, I've checked out. Thanks....more >>

I want to manage session in a class's property like: public class HealthSession { private int SelClassID, SelGradeID; public int ClassID_Sel { get {return Session["ClassID_Sel"];} set {Session["ClassID_Sel"]=value;} } But the it cannot find the namespace of Se...more >>

Hi, Can someone provide me with an explanation of how delegates work. I know how to use them by rote - meaning I look at code I have employing delegates and reproduce it. My problem is that there is something about the process I don't perceive. I think that somehow I've misinterpreted the w...more >>

We can define a static member in a class. But can we define a static class, so that all members are static? ...more >>

Excuse me. How to write function for form Minimize button clicked? Thanks CYShao:-) ...more >>

I'm trying to come up with the best (fastest, as this code will be run often) way to accomplish the following: I have a dynamic string array X (as one grabbed from a GetFiles() or GetDirectories() function call), which could have anywhere from 0 to maybe 250 elements in it. I also have a s...more >>

Please look at this code .. this will add the values of all 'checked' boxes (check box list control) into an array .. the problem is its adding the values twice. for eg: If I selected 2, 3 on the page the array is getting values .. 2,2,3,3. It should be getting 2,3. What is the error? fore...more >>

I have small program that always must be running when a user is logged on. Since users can close this program I must create a program that always check if this program is running. So I created a program in C# (my first!!) and it works with one major problem. This program detects when the des...more >>

I define a static variable, like myClass.aString. If one user in a session update the value of myClass.aString. Can the other users in other sessions can see this change? ...more >>

I have a web page in C# that export the crystal report to pdf files. I can export the pdf files on my local driver but if I change the file path to a remote server, the program doesn't give any error just no file created. I could first save the file to my local disk then using FileInfo clas...more >>

Now I was writing a windows form program which need be modified its config file by program. How can I do? Did anyone catch this problem. Thank you. -- ************** ÂäϼÓë¹ÂðÍÆë·É ÇïË®¹²³¤Ììһɫ ************** ...more >>

My C# application has a list (ListBox object), connected over a DataView to a dataset which corresponds to a table from a MySql database. I want to delete for example 4000-5000 rows from the table, which correspond to a certain filter. If I iterate the Rows from the table and check for each one...more >>

I don't understand the following error I'm getting when I call the DoOpen function of my unmanaged dll. Can someone explain please [DllImport(DllName, CharSet=charset)] public static extern int DoOpen(ref sRDetails RDetails); "An unhandled exception of type 'System.TypeLoadException' occurr...more >>

Hi, I have an web application to register users with username, password, email, etc... I the database i have a field with name: "activate" that its a bit field, 1 account activated, 0 account not activated... My application works well, when a user wants to registers complete the form, ...more >>

How I make this ? Item.Click += new EventHandler(methodname); methodname is a parameter. Rogerio ...more >>

If I have 2 classes ("A" and "B") that inherit from the same base class, and both override an event handler method HandleMyEvent(..), class "A" has a hashtable of one or more class "B"'s. When the event is getting thrown, class "A"'s overriden method HandleMyEvent(...) is catching it just ...more >>

Hi, I would like to query a datatable in C#. The query is like select sum(quantity) from table where company="IBM" And I would get this number and display it in my GUI. Is there a way to do it? Thanks Chrisben...more >>

hello, I am developing a boardgame, with a large number of customed usercontrols ( e.g. 20 X 20 = 400 ). I find it very usefull to use usercontrols, as they can contains specific properties and methods, but it makes the application very slow to redraw, even if I redraw only a small subset of ...more >>

Hi, I am using ASP.Net for the first time. How foward user to another web page on a certain event? Thanks in Advance...more >>

I created a dll in .NET using C# and I need to call this dll from a Visual C++ 6.0 application. I am programmatically calling the regasm.exe as I am getting the installroot registry key, finding the folder, get the exe, then doing a CreateProcess and it seems to function correctly. My problem ...more >>

Hi! When developing a windows application I sometimes recieve a popup wnidow with an exception message. (telling me somthing about JIT... with following error message) When this exceptions occurs I whish that the applications should save it to a file, as a log. How do I do that, or wh...more >>

I have some ideas that I would like to try in eliminating DoS, unwanted SMTP connections/sessions, etc. to my Exchange server. To do this I need to write code that examines each SMTP attempt to connect (HELO) message and determine whether I would like to allow them to connect or not and then ...more >>

Hi, Is there anyway to programmatically load a byte array into a word document in c#? We have an application that streams a byte array of a previously saved word document into a c# client. I can file the stream away to the local disk, then open with document.open, but there is a system req...more >>

Is there any tool available for generating unit test code in .NET. This is reverse engineering process, which we have to unit test methods in a class. Tool such as Nunit can test the methods only if we have unit test classes. Is there any tool available which can assist in developing these uni...more >>

If I call "=80".getBytes() in Java I get 0x80. If I call myUTF8Encoding.GetBytes("=80") in C# I get 0xe2, 0x82, 0xac. In case you can't read it the chararacter in double quotes is a Euro symbol. I need to pass strings to Java via JNI so I need to have the same Unicode bytes. I know this ...more >>

Hi everyone... I'm a beginner in C#, I'm trying to: -> check the BatteryLifePercent, and put the value into a string; ->check the ACLineStatus to know if the device is connected to external power, ->if yes add this info into the string; ->send the string via UDP to a server. i wrote ...more >>

Hi, How could i pass an array2d into a datatable?. Has Datatable class a direct method to do that? I try to use LoadRow method for each row in the array2d but doesnt work. -- Thanks Regards. Josema...more >>

Hi I have the following method that I'm having trouble with. The method should check that the files exist. If it does, then dynamically create a checkbox for that file. Not sure if the second array databasesActual is required which is where I'm geeting mixed up. private void AddCheckBoxes(s...more >>

Hi all, how can i get the active control (which has the input focus) in an other application? I have the handle of the active window, but I can't reach the active control. Any idea? Thanks, Tamas Meszaros...more >>

Is there a basic guide on Xml document creation and editing (simpler than the MSDN docs). Say I want to create a file containing the following: <?xml version="1.0" encoding="utf-8" standalone="yes"?> <Files> <File> <Text>Test</Text> <Name>Test.html</N...more >>

Hello, I am a student who needs to develop a game for an XDA. I´d like to create one where you need to walk through some floors and enter different rooms. (walk through floors maybe like 1st Person shooter). I have Visual Szudio .Net Professional and I would like a tool which can draw these...more >>

Hi, I have a question regd. Windows authentication and network file access. My asp.net application doesn't use any of the .NET's authentication schemes (Forms, Windows or Passport) yet. I have a login page where the users would supply their credentials and the business logic compares these ...more >>

Hi, How can I "steal" selection from an application? e.g. I select some text in the browser and I would like to see this text from my application. Can I send for example CTRL-C (Clipboard-Copy) message to other app-s? How? Thanks in advance! Tamas Meszaros...more >>