WebRequest.ContentLength 属性

定义

命名空间:

System.Net

程序集:

System.Net.Requests.dll

Source:

WebRequest.cs

当在子类中被重写时，获取或设置所发送的请求数据的内容长度。

public:
 virtual property long ContentLength { long get(); void set(long value); };

public virtual long ContentLength { get; set; }

member this.ContentLength : int64 with get, set

Public Overridable Property ContentLength As Long

属性值

Int64

发送的请求数据的字节数。

例外

NotImplementedException

当未在子类中重写该属性时，试图获取或设置该属性。

示例

以下示例将 ContentLength 属性设置为传出字节缓冲区中的字节数。

// Set the 'ContentType' property of the WebRequest.
myWebRequest->ContentType = "application/x-www-form-urlencoded";

// Set the 'ContentLength' property of the WebRequest.
myWebRequest->ContentLength = byteArray->Length;
Stream^ newStream = myWebRequest->GetRequestStream();
newStream->Write( byteArray, 0, byteArray->Length );

// Close the Stream object.
newStream->Close();

// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
WebResponse^ myWebResponse = myWebRequest->GetResponse();

// Set the 'ContentType' property of the WebRequest.
myWebRequest.ContentType="application/x-www-form-urlencoded";

// Set the 'ContentLength' property of the WebRequest.
myWebRequest.ContentLength=byteArray.Length;
Stream newStream=myWebRequest.GetRequestStream();
newStream.Write(byteArray,0,byteArray.Length);

// Close the Stream object.
newStream.Close();

// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
WebResponse myWebResponse=myWebRequest.GetResponse();

' Set the 'ContentType' property of the WebRequest.
myWebRequest.ContentType = "application/x-www-form-urlencoded"

' Set the 'ContentLength' property of the WebRequest.
myWebRequest.ContentLength = byteArray.Length
Dim newStream As Stream = myWebRequest.GetRequestStream()
newStream.Write(byteArray, 0, byteArray.Length)

' Close the Stream object.
newStream.Close()

' Assign the response object of 'WebRequest' to a 'WebResponse' variable.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()

注解

属性 ContentLength 包含 实例发送到 Internet 资源 WebRequest 的数据字节数。

注意

类 WebRequest 是类 abstract 。 实例在运行时的实际行为 WebRequest 由 方法返回 WebRequest.Create 的后代类确定。 有关默认值和异常的详细信息，请参阅后代类（如 HttpWebRequest 和 FileWebRequest）的文档。

另请参阅

• ContentLength