asp.net调用51ditu

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前台：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MapsDemo.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>我的51地图</title>

</head>
<body>
    <form id="form1" runat="server">
    <input id="hidAddress" runat="server" type="hidden" />
    *提示：地图上用
    <img src="images/address.jpg" alt="" height="20px" width="20px" />
    标出了大概位置，该结果可能不准确，仅供参考。

</form>
</body>
</html>
后台：

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string address = null;
        if (!IsPostBack)
        {
            address = "12085627,3201350,3";//读取数据库坐标
            this.hidAddress.Value = address;
        }
        else
        {
            string addressUpdate = this.longitude.Value + "," + this.latitude.Value + "," + this.level.Value;
            address = addressUpdate;//更新数据库坐标
            this.hidAddress.Value = address;
        }
    }
}