OutgoingWebRequestContext.IfModifiedSince 屬性

public:
 property System::String ^ IfModifiedSince { System::String ^ get(); void set(System::String ^ value); };

public string IfModifiedSince { get; set; }

member this.IfModifiedSince : string with get, set

Public Property IfModifiedSince As String

屬性值

這是 IfModifiedSince 發出的網頁請求的標頭。