C#判断WebService接口是否可用

 1      using MSXML2;   

          public bool InterfaceEnble()
 2         {
 3             string url = "http://localhost:81/WebServiceLogin.asmx";
 4             XMLHTTP http = new XMLHTTP();
 5             try
 6             {
 7                 http.open("GET ", url, false, null, null);
 8                 http.send(null);
 9                 int iStatus = http.status;
10                 //如果状态不为200，就是不能调用此接口 
11                 if (iStatus == 200)
12                     return true;
13             }
14             catch (Exception ex)
15             {
16                 MessageBox.Show("接口调用失败," + ex);
17             }
18 
19             return false;
20         }
判断接口是否可用