Add Method (HttpResponseHeader, String)

WebHeaderCollection.Add Method (HttpResponseHeader, String)

Note: This method is new in the .NET Framework version 2.0.

Inserts the specified header with the specified value into the collection.

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

public void Add (
	HttpResponseHeader header,
	string value
public void Add (
	HttpResponseHeader header, 
	String value
public function Add (
	header : HttpResponseHeader, 
	value : String



The header to add to the collection.


The content of the header.

Exception typeCondition


The length of value is greater than 65535.


This WebHeaderCollection instance does not allow instances of HttpResponseHeader.

If the specified header does not exist, the Add method inserts a new header into the list of header name/value pairs.

If the specified header is already present, value is added to the comma-separated list of values associated with the header.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

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