如何更改 webClient.UploadData() 的时间限制？答案

【问题标题】：How can I change the time limit for webClient.UploadData()?如何更改 webClient.UploadData() 的时间限制？
【发布时间】：2010-11-17 07:13:54
【问题描述】：

我正在使用WebClient.UploadData() 在 Java 服务器上发帖。如何延长时间限制？（每次我尝试进行调试时都会超时）

【问题讨论】：

标签： c# .net web-services webclient

【解决方案1】：

所以对于那些用 VB 编写代码的人...

Public Class WebClientExtended
    Inherits WebClient
    Public Property Timeout() As Integer
        Get
            Return m_Timeout
        End Get
        Set(value As Integer)
            m_Timeout = value
        End Set
    End Property
    Private m_Timeout As Integer

    Protected Overrides Function GetWebRequest(address As Uri) As WebRequest
        Dim request = MyBase.GetWebRequest(address)
        request.Timeout = Timeout
        Return request
    End Function
End Class

Function UploadFile(ByVal URL As String, ByVal FilePath As String, ByVal FileName As String)

    'Call API to Upload File
    Dim myWebClient As New WebClientExtended
    myWebClient.Timeout = 10 * 60 * 1000
    Dim responseArray As Byte()
    Dim responseString As String = ""

    Try
        responseArray = myWebClient.UploadFile(URL, FilePath + "/" + FileName)
        responseString = System.Text.Encoding.ASCII.GetString(responseArray)
    Catch ex As Exception
        responseString = "Error: " + ex.Message
    End Try

    Return responseString

End Function

【讨论】：

【解决方案2】：

WebClient 没有 timeout 属性，但是可以从 WebClient 继承以授予对使用的内部 WebRequest 的 Timeout 的访问权限：

 public class WebClientEx : WebClient
 {
     public int Timeout {get; set;}

     protected override WebRequest GetWebRequest(Uri address)
     {
        var request = base.GetWebRequest(address);
        request.Timeout = Timeout;
        return request;
     }
 }

用法：

 var myClient = new WebClientEx();
 myClient.Timeout = 900000 // Daft timeout period
 myClient.UploadData(myUri, myData);

【讨论】：

很好的答案。仅供参考，我使用了它，它也适用于 WebClient.UploadValues()
太好了，这很有帮助！