WebResponse.ContentLength Property

The ContentLength property contains the length, in bytes, of the response from the Internet resource. For request methods that contain header information, the ContentLength does not include the length of the header information.

Note
The WebResponse class is an abstract class. The actual behavior of WebResponse instances at run time is determined by the descendant class returned by WebRequest.GetResponse. For more information about default values and exceptions, please see the documentation for the descendant classes, such as HttpWebResponse and FileWebResponse.

The following example uses the ContentLength property to obtain the Length of the resource returned.

                     // Create a 'WebRequest' with the specified url.
			WebRequest myWebRequest = WebRequest.Create("http://www.contoso.com"); 

			// Send the 'WebRequest' and wait for response.
			WebResponse myWebResponse = myWebRequest.GetResponse(); 

			// Display the content length and content type received as headers in the response object.
			Console.WriteLine("\nContent length :{0}, Content Type : {1}", 
			                             myWebResponse.ContentLength, 
			                             myWebResponse.ContentType);  
			
			// Release resources of response object.
			myWebResponse.Close(); 
			

.NET Framework

.NET Framework Client Profile

Portable Class Library

.NET for Windows Store apps

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.

Reference