C# 使用WebClient時,在多網卡時,指定IP發送Web請求

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需要定義一個類,重寫GetWebRequest,在方法內,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;        }    }

 

使用時,  在執行個體化建構函式中傳入所需IP即可

C# 使用WebClient時,在多網卡時,指定IP發送Web請求

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