可能重复:
连接断开时超时。请帮帮我
我想在我的代码中放一个暂停。当文件被下载时,我没有上网,它计数为60秒,如果连接没有恢复,就会发出一条消息。
这是代码:
string novoNome;
novoNome = strlocal + "\" + zipNome;
using (WebClient wcDownload = new WebClient())
{
try
{
if (!Directory.Exists(strlocal))
{
Directory.CreateDirectory(strlocal);
}
#region comunicação para download
//string saida;
// cria uma requisição do arquivo para download
webRequest = (HttpWebRequest)WebRequest.Create(url);
webResponse = (HttpWebResponse)webRequest.GetResponse();
//Perguntar o tamanho do arquivo
Int64 fileSize = webResponse.ContentLength;
Uri uri = new Uri(url);
// Abrindo arquivo para Download
strResponse = wcDownload.OpenRead(uri);
// Criando novo arquivo para salvar no HDD
strLocal = new FileStream(novoNome, FileMode.Create, FileAccess.Write, FileShare.None);
#endregion
#region transferencia
int bytesSize = 0;
byte[] downBuffer = new byte[2048];
try
{
while ((bytesSize = strResponse.Read(downBuffer, 0, downBuffer.Length)) > 0)
{
strLocal.Write(downBuffer, 0, bytesSize);
//if(this.IsAccessible)
this.Invoke(new UpdateProgessCallback(this.UpdateProgress), new object[] { strLocal.Length, fileSize });
//wcDownload.DownloadProgressChanged += new DownloadProgressChangedEventHandler(wcDownload_DownloadProgressChanged);
}
}
catch (Exception e)
{
}
#endregion
}
finally
{
strResponse.Close();
strLocal.Close();
}
}
有人能帮我吗?
您可以在WebRequest
实例上设置超时。类似于:webRequest.Timeout=60000;
在超时的情况下,将抛出一个WebException
。有关详细信息,请查看MSDN文档。
您应该将Timeout属性设置为WebRequest类。
http://msdn.microsoft.com/en-us/library/system.net.webrequest.timeout.aspx
您可以设置两个超时,一个是前面提到的设置webRequest.timeout的答案。另一个在您的情况下有用的是:
webResponse.GetResponseStream().ReadTimeout = 60000;
当你的互联网连接中断60年代时,这将引发一个例外。。。。