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:-DHi , I am planning to develop a voice chat application using c#. Can you help Me please.
Jijo
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Hello jijobaby,
If you want to develop in C#.Net you can use WinRTP. To download it Click here[^]. And to find more information click here[^]
Best of luck.
Regards,
Divyang Mithaiwala
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Thank You Mr. Divyang Mithaiwala. But how can i do with c# ? Anu links ? Thanks again
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hi all,
i am using 2 ways to get a file name for 2 various purposes.. one way s i am using save dialog box and text box.... how can i find whether the given filename is valid(without any symbols etc) or not. is there any build in functions????????
jeyakumar
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Hi,
Can anyone please tell me how to Emulate a button click and Script execution on the webpage using HttpWebRequset and HttpWebResponse classes. for ex. i want to pass my login credientials to the web site than i can pass with name value pairs but how should I trigger the login button click function on the webpage. i am able to get the contents of the page but i am not able to resend so as to move to next page.it will be of great help.
kss
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Hello Somewhere I saw this snippet, I did not test it, u may get some clue//....
webBrowser1.Document.GetElementById("button1").Focus();
SendKeys.Send("{ENTER}");
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Thanks,
bashiwala wrote: webBrowser1.Document.GetElementById("button1").Focus();
SendKeys.Send("{ENTER}");
i guess, this is using the active X browser control of Microsoft. i dont want to use any active X control.
kss
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Hi,
I am Developing for .NET 2.0 C# Express 2005 Windows Application.
I tried to implement progress bar for SMTP email sending,
SmtpClient client = new SmtpClient(smtpServerName);
try
{
client.Timeout = timeOutSmtp;
client.Send(message);
}
catch (Exception err)
{
}
But I did not find any way to know how much percent of byte has been sent out of total bytes. I searched in MSDN and found, Socket class has this feature ( percent of byte sent ) but I am kind of new and I am not familiar with Socket TCP/IP etc. So, is it not possible to know the percentage of sent bytes for this SMTP client ?
Thanks and appreciation in advance.
bashiwala
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Hello everyone,
Where exactly do I configure a C# application to install in a specific path? Like, for example:
C:\Program Files\myApp
Please note that I don't mean the deployment folder!
I looked throughout the application properties, publish properties and publish Wizard, but didn't find a configuration option for that.
Thanks a lot,
JC.
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Hello to all,
When I'm running my application from the debug folder, I'm able to save changes to the database, but when I load the Crystal report to display that data, it still displays the old data, i.e., the data before the changes.
Does it have anything to do with the database Build Action property and Copy property or it has something to do with the report source path?
Thanks a lot,
JC.
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Hello,
I have been trying to use this triple des encryption code to encrypt then decrypt passwords. Basically I write the password out to a file, read it in then decrypt it. Using this code works fine while the app is running. Once I exit the app and read the encrypted password in the DecryptPassword method throws the error CryptographicException Message="Bad Data.\r\n" on the FlushFinalBlock() method. I found some of this code here and the other peice from Microsoft. Both work exactly the same way, while the app is running they can encrypt/decrypt strings but if I exit the app and start again, read the data from my file they both get the same error. I have attached the class with all the code and the exception. If anyone can help it would be greatly appreciated.
code:
================
using System;
using System.Collections.Generic;
using System.Text;
namespace notify
{
class crypto
{
private static System.Security.Cryptography.SymmetricAlgorithm TripleDES = new System.Security.Cryptography.TripleDESCryptoServiceProvider();
public void InitializeKeys()
{
//TripleDES.Key = System.Convert.FromBase64String("b4r5OegLw8Mz8wlMJ8isuSGSev1IgzMA");
//TripleDES.IV = System.Convert.FromBase64String("6qu72vdn0Fs=");
}
public string EncryptPassword(string ClearTextPassword)
{
TripleDES.Key = System.Convert.FromBase64String("b4r5OegLw8Mz8wlMJ8isuSGSev1IgzMA");
TripleDES.IV = System.Convert.FromBase64String("6qu72vdn0Fs=");
///////////////// Code Project Code /////////////////////////////////////////////////////////////////////////////////////
string encrypted;
byte[] Code = ASCIIEncoding.ASCII.GetBytes(ClearTextPassword);
encrypted = Convert.ToBase64String(TripleDES.CreateEncryptor().TransformFinalBlock(Code, 0, Code.Length));
return encrypted;
/////////////////// Microsoft Code ////////////////////////////////////////////////////////////////////////////////////////
//System.Security.Cryptography.ICryptoTransform ct;
//System.IO.MemoryStream ms;
//System.Security.Cryptography.CryptoStream cs;
//byte[] byt;
//ct = TripleDES.CreateEncryptor(TripleDES.Key, TripleDES.IV);
//byt = System.Text.Encoding.UTF8.GetBytes(ClearTextPassword);
//ms = new System.IO.MemoryStream();
//cs = new System.Security.Cryptography.CryptoStream(ms, ct, System.Security.Cryptography.CryptoStreamMode.Write);
//cs.Write(byt, 0, byt.Length);
//cs.FlushFinalBlock();
//cs.Close();
//return System.Convert.ToBase64String(ms.ToArray());
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
}
public string DecryptPassword(string EncryptedPassword)
{
TripleDES.Key = System.Convert.FromBase64String("b4r5OegLw8Mz8wlMJ8isuSGSev1IgzMA");
TripleDES.IV = System.Convert.FromBase64String("6qu72vdn0Fs=");
///////////////// Code Project Code /////////////////////////////////////////////////////////////////////////////////////
string decrypted;
byte[] Code = Convert.FromBase64String(EncryptedPassword);
decrypted = ASCIIEncoding.ASCII.GetString(TripleDES.CreateDecryptor() .TransformFinalBlock(Code, 0, Code.Length));
return decrypted;
/////////////////// Microsoft Code ////////////////////////////////////////////////////////////////////////////////////////
//System.Security.Cryptography.ICryptoTransform ct;
//System.IO.MemoryStream ms;
//System.Security.Cryptography.CryptoStream cs;
//byte[] byt;
//ct = TripleDES.CreateDecryptor(TripleDES.Key, TripleDES.IV);
//byt = System.Convert.FromBase64String(EncryptedPassword);
//ms = new System.IO.MemoryStream();
//cs = new System.Security.Cryptography.CryptoStream(ms, ct, System.Security.Cryptography.CryptoStreamMode.Write);
//cs.Write(byt, 0, byt.Length);
//cs.FlushFinalBlock();
//cs.Close();
//return System.Text.Encoding.UTF8.GetString(ms.ToArray());
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
}
}
}
====================================
exception:
====================================
System.Security.Cryptography.CryptographicException was unhandled
Message="Bad Data.\r\n"
Source="mscorlib"
StackTrace:
at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
at System.Security.Cryptography.Utils._DecryptData(SafeKeyHandle hKey, Byte[] data, Int32 ib, Int32 cb, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode PaddingMode, Boolean fDone)
at System.Security.Cryptography.CryptoAPITransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount)
at notify.crypto.DecryptPassword(String EncryptedPassword) in C:\Data\Visual Studio 2005\Projects\notify\notify\crypto.cs:line 53
at notify.frmMain.frmMain_Load(Object sender, EventArgs e) in C:\Data\Visual Studio 2005\Projects\notify\notify\frmMain.cs:line 232
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.SafeNativeMethods.ShowWindow(HandleRef hWnd, Int32 nCmdShow)
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.set_Visible(Boolean value)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.Run(Form mainForm)
at notify.Program.Main() in C:\Data\Visual Studio 2005\Projects\notify\notify\Program.cs:line 17
at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Darryl
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It looks like I made a silly mistake. Using UTF8 encoding does't work well. I simply changed it to use System.Text.ASCIIEncoding.ASCII.GetString();
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hai ,iam trying to get the image from video camera and save it in the database directly, for that i used a code which gives out of memory error. iam giving the code below, pls correct me or give me the code for that.
string strFnn=this.imageFileName;
this.pictureBox.Image=Image.FromFile(strFnn);
...........
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Is there anyway to fire an event when the mouse moves over the notifyicon? and another when it moves out?
JGA
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I would like to increase the height of the rows in the datagrid whenever data is binded to the grid.
So, How do I get the notification whenever the datagrid is binded to a Datasource.
The DataSourceChanged event occurs only when there is a change in the DataSources value. When I bind the same datasource to the datagrid, the DataSourceChanged event won't fire.
How can this be handled.
Thanks in advance.
Subrahmanyam K
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hi Subrahmanyam K! 
try to shadow the DataSource property, like this:
public new object DataSource
{
get {return base.DataSource;}
set
{
base.DataSource = value;
}
}
hope that helps!
microsoc 
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Hi
a simple question cause due to a C++ to C# migration.
Is there a User thread available (not a worker thread) like the CWinThread in VC++
codito ergo sum
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Is System.Threading.Thread what you are looking for?
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I dont thinks so,
It seems to me that this is a worker thread object, a function is called in a different
thread but when the function is done the thread will end. In my case the threads need to
be up the whole time. And I need to send system messages from/to the different threads in my application.
I don't find functions or objects to do this. Am I missing something??
codito ergo sum
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When the function is done, the thread will always end. If you want the thread to keep running, you just have to keep the function from ending. Put a look in it that listens for messages. If there is no messages, let it sleep for a while.
---
b { font-weight: normal; }
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You must be talking about User-interface threads which have a message pump. I think you will have to play with Application.Run and Windows Forms.
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Something like that, but the threads have no GUI.
How can I achive a message pump ??
codito ergo sum
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hi
i need to convert the poiners in c++ to C#
how can i do it ?
for example i have this code in c++
and the main problem is with the *Word
i need to use the same funtions (i have dll for the them)
but i have problems with the variables or parameters
void *StopMemory;
int ErrorCode;
int LanguageID = 1;
int CharCodeID = 1;
char *Word = "the";
ErrorCode = ExtrCreateStopMemory(&StopMemory);
ErrorCode = ExtrAddStopWord(StopMemory,LanguageID,CharCodeID,(void *) Word);
hope somebody will help me
thanks
eyalso
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To use pointers in C# you have to put them within a class defined as "unsafe" through the unsafe keyword.
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