需要定义一个类，重写GetWebRequest，在方法内，指定IP地址
public class MyWebClient : WebClient
{
private IPAddress ipAddress; public MyWebClient(IPAddress ipAddress)
{
this.ipAddress = ipAddress;
} protected override WebRequest GetWebRequest(Uri address)
{
WebRequest request = (WebRequest)base.GetWebRequest(address); ((HttpWebRequest)request).ServicePoint.BindIPEndPointDelegate += (servicePoint, remoteEndPoint, retryCount) =>
{
return new IPEndPoint(ipAddress, 0);
}; return request;
}
}
使用时， 在实例化构造函数中传入所需IP即可
