C#

NET SEND * /domain:TEXTDOM This is my test message...

string myDomainName = Environment.UserDomainName;
string theMessage = "This is a test.";
Process.Start("net.exe", string.Format("send * /domain:{0} {1}",
  myDomainName, theMessage));

public sealed class NetSend
{
  public NetSend() {}
  // Define fields and properties to get/set those fields.
 
  public Send()
  {
    // Only works in Windows NT-based OSes.
    if (Environment.OSVersion.Platform == PlatformID.Win32Windows)
      throw new NotSupportException();
 
    // Alloc your buffers using the NetApiBufferAllocate API, send
    // your message and free the string buffer.
  }
  [DllImport("netapi32.dll", CharSet=CharSet.Unicode)]
  private static extern uint NetMessageBufferSend(
    string servername, // null is local machine
    string msgalias,
    string fromname,
    byte[] msg,
    uint msglen);
  [DllImport("netapi32.dll")]
  private static extern uint NetApiBufferAllocate(
    uint byteCount,
    out IntPtr ptr);
  [DllImport("netapi32.dll")]
  private static extern uint NetApiBufferFree(
    IntPtr ptr);
}

private static readonly IOServiceAgent instance = new IOServiceAgent();<br />
<br />
private IOServiceAgent(){}<br />
<br />
public static IOServiceAgent Instance<br />
{<br />
	get<br />
	{<br />
		return instance;<br />
	}<br />
}

private static IOServiceAgent instance;<br />
<br />
private IOServiceAgent(){}<br />
<br />
public static IOServiceAgent Instance<br />
{<br />
	get<br />
	{<br />
		if(instance == null)<br />
		{<br />
			instance = new IOServiceAgent();<br />
		}<br />
<br />
		return instance;<br />
	}<br />
}

this.text1.DataBindings.Add(
  new Binding("Text", this.dsPeople1.People, "First_Name"));

An unhandled exception of type 'System.ArgumentException' occurred in system.windows.forms.dll<br />
<br />
Additional information: Cannot create a child list for field People.