webservice文件中

         [WebMethod]
         public DataTable dt()
         {
             DataTable dt = new DataTable("default");
             dt.Columns.Add("id");
             dt.Columns.Add("name");
             for (int i = 0; i < 10; i++)
             {
                 DataRow dr = dt.NewRow();
                 dr["id"] = i.ToString();
                 dr["name"] = "name" + i.ToString();
                 dt.Rows.Add(dr);
             }
             return dt;
         }

        调用页面中

             WebService1.WebService1 service = new WebService1.WebService1();
             DataTable dt = service.dt();
             gvUser.DataSource = dt;
             gvUser.DataBind();

       最关键的是在webservice的方法中为datatable命名,否则就会报错.

WebService返回DataTable问题,布布扣,bubuko.com

WebService返回DataTable问题