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WebHeaderCollection.Set Method (HttpRequestHeader, String)

Sets the specified header to the specified value.

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

public void Set(
	HttpRequestHeader header,
	string value
)

Parameters

header
Type: System.Net.HttpRequestHeader

The HttpRequestHeader value to set.

value
Type: System.String

The content of the header to set.

ExceptionCondition
ArgumentOutOfRangeException

The length of value is greater than 65535.

InvalidOperationException

This WebHeaderCollection instance does not allow instances of HttpRequestHeader.

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

If the header specified in header is already present, value replaces the existing value.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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