动态生成图片热点

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class _Default : System.Web.UI.Page
{
    string strConn;
    string strSQL;
    SqlConnection sqlConn;                                   //定义
    RectangleHotSpot rhs = new RectangleHotSpot();
    PolygonHotSpot phs = new PolygonHotSpot();
    CircleHotSpot chs = new CircleHotSpot();
    HotSpot hs;
    protected void Page_Load(object sender, EventArgs e)
    {
        strConn = System.Configuration.ConfigurationManager.AppSettings["MapConnectionString"];//链接
        sqlConn = new SqlConnection(strConn);
        int intMapID = 1;
        if (Request["mapid"] != null)
        {
            intMapID = int.Parse(Request["mapid"].ToString());
        }
        strSQL = "SELECT * FROM tMap WHERE MMapID=@PMapID";
        SqlCommand sqlComm = new SqlCommand(strSQL, sqlConn);
        sqlComm.Parameters.Add(new SqlParameter("@PMapID", SqlDbType.Int));//获取传过来的值再动态绑定要显示的图片
        sqlComm.Parameters["@PMapID"].Value = intMapID;
        sqlComm.Connection.Open();
        SqlDataReader sqlDR = sqlComm.ExecuteReader();
        if (sqlDR.Read())
        {
            imap1.ImageUrl = sqlDR["MMapSRC"].ToString();
            sqlComm.Connection.Close();
             this.SubMap(intMapID);
        }
    }
    protected void SubMap(int intMapID1)                          //动态绑定热点
    {
        strSQL = "SELECT * FROM tArea WHERE MMapID=@PMapID";
        SqlCommand sqlComm = new SqlCommand(strSQL, sqlConn);
        sqlComm.Parameters.Add(new SqlParameter("@PMapID", SqlDbType.Int));
        sqlComm.Parameters["@PMapID"].Value = intMapID1;
        sqlComm.Connection.Open();
        SqlDataReader sqlDR = sqlComm.ExecuteReader();
        while (sqlDR.Read())
        {

            int intLinkType =int.Parse(sqlDR["MLinkType"].ToString());   //通过LinkType获取链接到的页面
            string strLink="";
            if (intLinkType == 0)
            {
                 strLink = "Default.aspx?mapid=" + sqlDR["MLinkMapID"];
            }
            else if (intLinkType == 1)
            {
                strLink = "Company.aspx?BID=" + int.Parse(sqlDR["MLinkBigGroup"].ToString()) + "&SID=" + int.Parse(sqlDR["MLinkSmallGroup"].ToString());
            }
            string strShape = sqlDR["MShape"].ToString();
            if (strShape == "poly")
            {
                phs.NavigateUrl = strLink;
                phs.Coordinates = sqlDR["MCoords"].ToString();
                hs = phs;
                imap1.HotSpots.Add(hs);
            }
            else if (strShape == "rect")
            {
                rhs.NavigateUrl = strLink;
                string strCoor = sqlDR["MCoords"].ToString();
                string[] strCoorArr = strCoor.Split(',');
                rhs.Top = int.Parse(strCoorArr[0]);
                rhs.Left = int.Parse(strCoorArr[1]);
                rhs.Right = int.Parse(strCoorArr[2]);
                rhs.Bottom = int.Parse(strCoorArr[3]);
                hs = rhs;
                imap1.HotSpots.Add(hs);
            }
            else if (strShape == "Circle")
            {
                chs.NavigateUrl = strLink;
                string strCoor = sqlDR["MCoords"].ToString();
                string[] strCoorArr = strCoor.Split(',');
                chs.Radius = int.Parse(strCoorArr[0]);
                chs.X = int.Parse(strCoorArr[1]);
                chs.Y = int.Parse(strCoorArr[2]);
                hs = chs;
                imap1.HotSpots.Add(hs);
            }
           
        }
        sqlComm.Connection.Close();
       
    }
}