FileWebRequest.GetRequestStream 方法

定義

命名空間:

System.Net

組件:

netstandard.dll, System.Net.Requests.dll

來源:

FileWebRequest.cs

傳回 Stream 物件，用於將資料寫入至檔案系統資源。

C#

public override System.IO.Stream GetRequestStream();

傳回

Stream

Stream，用於將資料寫入至檔案系統資源。

例外狀況

WebException

要求逾時。

範例

下列程式代碼範例會 GetRequestStream 使用 方法來取得用來寫入檔案的數據流實例。 請參閱 類別 FileWebRequest 中的完整範例。

C#

// Enter the string to write to the file.
Console.WriteLine ("Enter the string you want to write:");

string userInput = Console.ReadLine ();

// Convert the string to a byte array.
ASCIIEncoding encoder = new ASCIIEncoding ();
byte[] byteArray = encoder.GetBytes (userInput);

// Set the ContentLength property.
myFileWebRequest.ContentLength = byteArray.Length;

string contentLength = myFileWebRequest.ContentLength.ToString ();

Console.WriteLine ("\nThe content length is {0}.", contentLength);

// Get the file stream handler to write to the file.
Stream readStream = myFileWebRequest.GetRequestStream ();

// Write to the file stream.
// Note.  For this to work, the file must be accessible
// on the network. This can be accomplished by setting the property
// sharing of the folder containg the file.
// FileWebRequest.Credentials property cannot be used for this purpose.
readStream.Write (byteArray, 0, userInput.Length);
Console.WriteLine ("\nThe String you entered was successfully written to the file.");

備註

方法 GetRequestStream 會提供 對的 Stream同步存取。 針對異步存取，請使用 BeginGetRequestStream 和 EndGetRequestStream 方法。

適用於

另請參閱

• BeginGetRequestStream(AsyncCallback, Object)