如何更改webClient.UploadData()的时间限制？

Question

我正在使用WebClient.UploadData()在Java服务器上做一篇文章。怎样才能延长时限？(每次我尝试进行一些调试时它都会超时)

Answer 1

WebClient没有timeout属性，但是可以从WebClient继承来访问所使用的内部WebRequest上的Timeout：

 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);

Answer 2

所以对于那些用VB编写代码的人来说...

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