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HttpWebRequest.AllowWriteStreamBuffering Property

Gets or sets a value that indicates whether to buffer the data sent to the Internet resource.

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

public virtual bool AllowWriteStreamBuffering { get; set; }

Property Value

Type: System.Boolean
true to enable buffering of the data sent to the Internet resource; false to disable buffering. The default is true.

When AllowWriteStreamBuffering is true, the data is buffered in memory so it is ready to be resent in the event of redirections or authentication requests.

Notes to Implementers

Setting AllowWriteStreamBuffering to true might cause performance problems when uploading large datasets because the data buffer could use all available memory.

The following code example uses the AllowWriteStreamBuffering property to disable data buffering.


			// Create a new 'HttpWebRequest' object to the mentioned Uri.				
			HttpWebRequest myHttpWebRequest=(HttpWebRequest)WebRequest.Create("http://www.contoso.com/codesnippets/next.asp");
			// Set AllowWriteStreamBuffering to 'false'. 
			myHttpWebRequest.AllowWriteStreamBuffering=false;
			Console.WriteLine("\nPlease Enter the data to be posted to the (http://www.contoso.com/codesnippets/next.asp) uri:");
			string inputData =Console.ReadLine();
			string postData="firstone="+inputData;
			// Set 'Method' property of 'HttpWebRequest' class to POST.
			myHttpWebRequest.Method="POST";
			ASCIIEncoding encodedData=new ASCIIEncoding();
			byte[]  byteArray=encodedData.GetBytes(postData);
			// Set 'ContentType' property of the 'HttpWebRequest' class to "application/x-www-form-urlencoded".
			myHttpWebRequest.ContentType="application/x-www-form-urlencoded";
			// If the AllowWriteStreamBuffering property of HttpWebRequest is set to false,the contentlength has to be set to length of data to be posted else Exception(411) is raised.
			myHttpWebRequest.ContentLength=byteArray.Length;
			Stream newStream=myHttpWebRequest.GetRequestStream();
			newStream.Write(byteArray,0,byteArray.Length);
			newStream.Close();
			Console.WriteLine("\nData has been posted to the Uri\n\nPlease wait for the response..........");
			// Assign the response object of 'HttpWebRequest' to a 'HttpWebResponse' variable.
			HttpWebResponse myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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