HttpWebRequest.AddRange Method (String, Int32)

Adds a range header to a request for a specific range from the beginning or end of the requested data.

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

public void AddRange (
	string rangeSpecifier,
	int range
public void AddRange (
	String rangeSpecifier, 
	int range
public function AddRange (
	rangeSpecifier : String, 
	range : int
Not applicable.



The description of the range.


The starting or ending point of the range.

Exception typeCondition


rangeSpecifier is a null reference (Nothing in Visual Basic).


rangeSpecifier is invalid.


The range header could not be added.

If range is positive, the range is from the start of the data to range.

If range is negative, the range is from range to the end of the data.

When receiving the response from a range request, only the HTTP headers associated with the entire request are parsed and made available via properties on the HttpWebResponse class. Headers associated with each range are returned in the response.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0