public static TRequest AddHeader<TRequest>(
	this TRequest request,
	string key,
	string value
)
where TRequest : HttpBase
<ExtensionAttribute>
Public Shared Function AddHeader(Of TRequest As HttpBase) ( 
	request As TRequest,
	key As String,
	value As String
) As TRequest[<ExtensionAttribute>]
static member AddHeader : 
        request : 'TRequest * 
        key : string * 
        value : string -> 'TRequest  when 'TRequest : HttpBase[缺少 "M:TouchSocket.Http.HttpExtensions.AddHeader``1(``0,System.String,System.String)" 的 <param name="request"/> 文档]
[缺少 "M:TouchSocket.Http.HttpExtensions.AddHeader``1(``0,System.String,System.String)" 的 <param name="key"/> 文档]
[缺少 "M:TouchSocket.Http.HttpExtensions.AddHeader``1(``0,System.String,System.String)" 的 <param name="value"/> 文档]
[缺少 "M:TouchSocket.Http.HttpExtensions.AddHeader``1(``0,System.String,System.String)" 的 <typeparam name="TRequest"/> 文档]
[缺少 "M:TouchSocket.Http.HttpExtensions.AddHeader``1(``0,System.String,System.String)" 的 <returns> 文档]