supermap实现地图浏览，属性查图，图查属性等基本功能

　　图查属性时要在按钮添加onclick事件：
"点查" onclick="SMISActionStart('MapControl1','POINTQUERY');"
"框查" onclick="SMISActionStart('MapControl1','RECTQUERY');"
"圆查" onclick="SMISActionStart('MapControl1','CIRCLEQUERY');"
"多边形查" onclick="SMISActionStart('MapControl1','POLYGONQUERY');"

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
//引用的空间
using SuperMap.IS.Utility;
using SuperMap.IS.WebControls;
namespace test
{
    /**//// <summary>
    /// WebForm1 的摘要说明。
    /// </summary>
    public class WebForm1 : System.Web.UI.Page
    {
        protected SuperMap.IS.WebControls.MapControl MapControl1;
        protected SuperMap.IS.WebControls.ToolbarControl ToolbarControl1;
        protected SuperMap.IS.WebControls.ViewEntireToolControl ViewEntireToolControl1;
        protected SuperMap.IS.WebControls.QuickZoomInToolControl QuickZoomInToolControl1;
        protected SuperMap.IS.WebControls.QuickZoomOutToolControl QuickZoomOutToolControl1;
        protected SuperMap.IS.WebControls.PanToolControl PanToolControl1;
        protected SuperMap.IS.WebControls.ZoomInToolControl ZoomInToolControl1;
        protected SuperMap.IS.WebControls.ZoomOutToolControl ZoomOutToolControl1;
        protected SuperMap.IS.WebControls.ViewPreviousToolControl ViewPreviousToolControl1;
        protected SuperMap.IS.WebControls.ViewNextToolControl ViewNextToolControl1;
        protected System.Web.UI.WebControls.TextBox TextBox1;
        protected System.Web.UI.WebControls.DataGrid DataGrid1;
        protected SuperMap.IS.WebControls.OverviewControl OverviewControl1;
        protected SuperMap.IS.WebControls.LayerControl LayerControl1;
        protected System.Web.UI.WebControls.Label Label1;
        protected System.Web.UI.WebControls.Button Button1;
    
        private void Page_Load(object sender, System.EventArgs e)
        {
            this.MapControl1.ClearHighLight();
            if(!Page.IsPostBack)
            {
                this.TextBox1.Text="伪皇宫";
            }
            // 在此处放置用户代码以初始化页面
        }

        Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.MapControl1.QueryCompleted += new SuperMap.IS.WebControls.MapControl.QueryCompletedEventHandler(this.MapControl1_QueryCompleted);
            this.MapControl1.Querying += new SuperMap.IS.WebControls.MapControl.QueryingEventHandler(this.MapControl1_Querying);
            this.Button1.Click += new System.EventHandler(this.Button1_Click);
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion

        private void Button1_Click(object sender, System.EventArgs e)
        {
            QueryParam q=new QueryParam();// 定义一个New查询参数设置对象queryParam，查询参数设置，包括查询
                                            // 的图层、 查询条件语句以及返回的字段等， 然后根据查询参数进行SQL查询
            q.IsAllLayer=false;// 设置是否查询地图中所有的图层信息，如果该值设置为false，则需要对每一个
                                // 待查询的图层分别进行查询条件的设置
            q.Layers=new QueryLayer[1];
            q.Layers[0]=new QueryLayer(); // 设置查询图层的对象
            q.Layers[0].Name="Park@changchun";//“图层＠地图”
            q.Layers[0].ReturnFields=new string[2]; // 设置查询结果中需要返回那些属性字段
            q.Layers[0].ReturnFields[0]="SMID";
            q.Layers[0].ReturnFields[1]="name";
            q.Layers[0].WhereClause="name like '*"+this.TextBox1.Text.ToString()+"*'";
            ResultSet rs=this.MapControl1.QueryBySQL(q);
            DataSet ds=rs.ToDataSet();
            this.DataGrid1.DataSource=ds;
            this.DataGrid1.DataBind();

        }
        //查询前触发
        private void MapControl1_Querying(object sender, SuperMap.IS.WebControls.EventArguments.QueryingEventArgs e)
        {
            e.Params.HasGeometry=false; //是否查询空间数据。
                                        //  True，表示要取空间数据； False ，表示不取空间数据
            e.Params.IsAllLayer=false;
            e.Params.Highlight=true;
            e.Params.Layers=new QueryLayer[1];
            e.Params.Layers[0]=new QueryLayer();
            e.Params.Layers[0].Name="Park@changchun";
            e.Params.Layers[0].ReturnFields=new string[2];
            e.Params.Layers[0].ReturnFields[0]="SMID";
            e.Params.Layers[0].ReturnFields[1]="name";
        }
        //查询后返回数据
        private void MapControl1_QueryCompleted(object sender, SuperMap.IS.WebControls.EventArguments.QueryCompletedEventArgs e)
        {
            ResultSet rs=new ResultSet();
            rs.Recordsets=e.Recordsets;
            DataSet ds=rs.ToDataSet();
            this.DataGrid1.DataSource=ds;
            this.DataGrid1.DataBind();
        }

        
    }
}