# SetHeader `SetHeader(Key, Value)` `Key-{String} Value-{Variant}` 添加/替換要與請求一起發送的標頭。 `SetHeader`應該用于只能在請求中包含一次的標頭（例如授權，Content-Type等） ``` Dim Request As New WebRequest Request.AddHeader "Authorization", "A..." Request.AddHeader "Authorization", "B..." '// -> Headers: '// Authorization: A... '// Authorization: B... Request.SetHeader "Authorization", "C..." '// -> Headers: '// Authorization: C...。 ```