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Add Method (String, String)

WebHeaderCollection.Add Method (String, String)

Inserts a header with the specified name and value into the collection.

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

abstract Add : 
        name:string * 
        value:string -> unit  
override Add : 
        name:string * 
        value:string -> unit

Parameters

name
Type: System.String

The header to add to the collection.

value
Type: System.String

The content of the header.

ExceptionCondition
ArgumentException

name is a null reference (Nothing in Visual Basic), Empty, or contains invalid characters.

-or-

name is a restricted header that must be set with a property setting.

-or-

value contains invalid characters.

ArgumentOutOfRangeException

The length of value is greater than 65535.

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

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

The following example adds a name/value pair to a WebHeaderCollection using the Add Method.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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