Use a LockBits method. You should get something like this: unsafe static byte[] getBytes(BitmapData data) { byte* firstByte = (byte*)data.Scan0.ToPointer(); int size = data.Stride * data.Height; byte[] bytes = new byte[size]; for (int i = 0; i < size; i++) bytes[i] = firstByte[i]; return bytes; } unsafe static void setBytes(BitmapData data, byte[] bytes) { byte* firstByte = (byte*)data.Scan0.ToPointer(); int size = data.Stride * data.Height; for (int i = 0; i < size; i++) firstByte[i] = bytes[i]; } static void Main() { using (Bitmap bmp = (Bitmap)Bitmap.FromFile(@"test.bmp")) { BitmapData data = bmp.LockBits(new Rectangle(new Point(0), bmp.Size), ImageLockMode.ReadOnly, bmp.PixelFormat); byte[] bytes = getBytes(data); bmp.UnlockBits(data); using (Bitmap copy = new Bitmap(data.Width, data.Height, bmp.PixelFormat)) { data = copy.LockBits(new Rectangle(new Point(0), copy.Size), ImageLockMode.WriteOnly, copy.PixelFormat); setBytes(data, bytes); copy.UnlockBits(data); copy.Save(@"test - copy.bmp"); } } } Compile with /unsafe. This code copies a BMP file. Insted getBytes and setBytes you may want to use System.Runtime.InteropServices.Marshal.Copy method, but it has many function we don't need here so it's better to stick to a simplier version. Greetings - Gajatko Portable.NET is part of DotGNU, a project to build a complete Free Software replacement for .NET - a system that truly belongs to the developers.

Simon Stevens wrote: Don't do this. If you are running out of virtual memory after you app has been running for a while, it's because your app has a memory leak. Exactly, increasing virtual memory is only going to buy a little more time, not much. Simon Stevens wrote: Use a tool like SysInternals process monitor to check how much memory your app is using Or just use the Performance monitor in Administrative Tools. "The clue train passed his station without stopping." - John Simmons / outlaw programmer "Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Does your code interact with other non-managed code? I've seen this when using a C++ DLL from C#. When the error occurs, what field values does the debugger show in the bitmap object? If they're all the same weird byte value, it may mean that object was already Disposed by another part of the code. If this is happening, you need to trace backwards to locate where it occurs.

Agreed. "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

Without seeing all of the related code, we probably can't help you. "Why don't you tie a kerosene-soaked rag around your ankles so the ants won't climb up and eat your candy ass..." - Dale Earnhardt, 1997 ----- "...the staggering layers of obscenity in your statement make it a work of art on so many levels." - Jason Jystad, 10/26/2001

It would be hard to guess the exact cause without looking at the code. However the WSACancelBlockinCall exception generally happens when you stop listening as Listen is a blocking method. Call the Close method to close the connection. ~Dave Dave Traister Software Engineer ComponentOne LLC www.ComponentOne.com

If you're looking for a full solution, and don't actually have a programming issue - gotta have actual code to have a programming issue right? - then you're far better off looking for bulk code on sourceforge.[^] You will probably have far better luck. Good luck. Scott P “It is practically impossible to teach good programming to students that have had a prior exposure to BASIC: as potential programmers they are mentally mutilated beyond hope of regeneration.” -Edsger Dijkstra

How to return and what to return plz tell clearly :( Shanzay

Thank u so much. It did work now ;) Now plz tell me abt my 1 more prob. if u can. When I click Disconnect button it throws exception and application dont close all threads which are using in main as well as its other classes. private void bDisconect_Click(object sender, EventArgs e) { try { Client_Login clog = new Client_Login();//child class clog.clnt_th.Abort();//child class thread clog.sock.Close();//child socket function } catch(System.NullReferenceException expnul) { MessageBox.Show(expnul.Message); } } Here what is the main prob.? How to finish this thread exactly. Shanzay

Gareth, clog is the object to access the control of thread which is use in other class and if I comment-out the clog aborting line then error on the thvideo.abort().Means error just come on abort() whatever thread I'm aborting.Got it? Shanzay

If you're doing this on your local LAN you should check the settings of any routers or other network devices between the server and client, since broadcast messages are sometimes filtered out. If your application is intended for the internet broadcasting is not an approach that will work, as you can read here[^]. Standards are great! Everybody should have one!

I used UDP protocol for sending Video files and by using streaming I m sending.At first Server Rcv one message for sending files then send file,the Code for sending file is as following using threads. private void liveVideoToolStripMenuItem_Click(object sender, EventArgs e) { try { Control.CheckForIllegalCrossThreadCalls = false; thvideo = new Thread(new ThreadStart(transmitVideo)); thvideo.IsBackground = true; thvideo.Start(); } catch (ThreadStartException thre) { MessageBox.Show(thre.Message); } } void transmitVideo() { /////////////////////////////////UDP //////////////////////////*/ filesndsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); ipd = new IPEndPoint(IPAddress.Any, 7090); filesndsock.Bind(ipd); MulticastOption moi = new MulticastOption(IPAddress.Parse("224.0.0.1")); filesndsock.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.AddMembership, moi); ipep = (EndPoint)ipd; while (true) { try { filesndsock.ReceiveFrom(rcvbuf, ref ipep); // Encoding and Viewing The Received Message msg = Encoding.ASCII.GetString(rcvbuf); //Server here receive msg from client for sending file MessageBox.Show(msg); try { thvideofile = new Thread(new ThreadStart(sendfile)); thvideofile.IsBackground = true; thvideofile.Start(); } catch (ThreadStartException thre) { MessageBox.Show(thre.Message); } } catch (Exception ee) { MessageBox.Show(this, ee.Message, "Unknown Exception"); } } } void sendfile() { if (dlgOpen.ShowDialog() == DialogResult.OK) { // create the raw streams inStream = File.OpenRead(dlgOpen.FileName); bufInStream = new BufferedStream(inStream); int bytesRead = 0; while ((bytesRead = bufInStream.Read(buf, 0, 16384)) > 0) { Thread.Sleep(20); filesndsock.SendTo(buf, bytesRead, SocketFlags.None, ipep); } } MessageBox.Show("File is completely transfered"); bufInStream.Close(); inStream.Close(); } But for sending same time to

DeepOceans wrote: while ((bytesRead = bufInStream.Read( buf, 0, 16384)) > 0) if(bytesRead<16384) sock.Send(buf,bytesRead,SocketFlags.None); else sock.Send(buf,buf.Length,SocketFlags.None); this is not my point; and it is a useless complication, just write sock.Send(buf,bytesRead,SocketFlags.None); You should fix the receiver! :) Luc Pattyn [Forum Guidelines] [My Articles] this months tips: - before you ask a question here, search CodeProject, then Google - the quality and detail of your question reflects on the effectiveness of the help you are likely to get - use PRE tags to preserve formatting when showing multi-line code snippets

Check this[^] out. Take care, Tom ----------------------------------------------- Check out my blog at http://tjoe.wordpress.com

yah well I got success by adding two things 1. used thread.Sleep() before saving 2. used file.jpg instead memorystream. Thanx. Shanzay

Ofcourse At 1st I searched there but didnt get exact info. related to LIVE video then asked.THANX. Shanzay