HttpWebRequest.AddRange Method (String, Int32, Int32)

Adds a range header to a request for a specified range.

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

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



The description of the range.


The position at which to start sending data.


The position at which to stop sending data.

Exception typeCondition


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


from is greater than to


from or to is less than 0.


rangeSpecifier is invalid.


The range header could not be added.

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