js调用服务器控件cs中的方法（二）



页面：

<input type="button"   onclick="Search()" value="提交" />

js:

 function Search() {
              var UserName = document.getElementById("txtUserName").value;
                  $.ajax({
                      type: "POST",
                      contentType: "application/json",
                      url: "Login.aspx/GetUserName",
                      async: false,
                      data: "{value:'" + UserName + "'}",
                      dataType: "json",
                      success: function (result) {
                          var list = result.d;
                          if (list.indexOf(",") > -1) {
                              list = list.split(',');
                              document.getElementById("txtUserName").value = list[0];
                          }
                          else {
                              document.getElementById("txtUserName").value = list;
                          }
                          document.getElementById("txtPassword").focus();
                      }
                  });
          }

cs：

 [WebMethod]
        public static string GetUserName(string value)
        {
            string empId = "";
            if (!string.IsNullOrEmpty(value))
            {
                DataTable dt = new UserDAL().FindempID(value);
                if (dt.Rows.Count > 0)
                {
                    empId = dt.Rows[0]["empID"].ToString();
                    DataTable cardDt = new UserDAL().getWorkCardIDByCardIDStatus(value);
                    if (cardDt.Rows.Count > 0)
                    {
                        empId = empId + "," + cardDt.Rows[0]["workCardID"].ToString();
                    }
                }
                else
                {
                    empId = value;
                }
            }
            return empId;
        }