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UdpClient.EndSend Method

.NET Framework 4

Other Versions

Ends a pending asynchronous send.

Namespace: System.Net.Sockets
Assembly: System (in System.dll)

Syntax

C++

Copy

public int EndSend(
	IAsyncResult asyncResult
)

Parameters

asyncResult: Type: System.IAsyncResult
An IAsyncResult object returned by a call to BeginSend.

Return Value

Type: System.Int32
If successful, the number of bytes sent to the UdpClient.

Exceptions

Exception	Condition
ArgumentNullException	asyncResult is null.
ArgumentException	asyncResult was not returned by a call to the BeginSend method.
InvalidOperationException	EndSend was previously called for the asynchronous read.
SocketException	An error occurred when attempting to access the underlying socket. See the Remarks section for more information.
ObjectDisposedException	The underlying Socket has been closed.

Remarks

This method blocks until the operation is complete.

To perform this operation synchronously, use the Send method.

Examples

The following code example uses BeginSend to complete an asynchronous send of a server request.

C++

Copy


public static bool messageSent = false;

public static void SendCallback(IAsyncResult ar)
{
  UdpClient u = (UdpClient)ar.AsyncState;

  Console.WriteLine("number of bytes sent: {0}", u.EndSend(ar));
  messageSent = true;
}

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

UdpClient Class

System.Net.Sockets Namespace

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