identifypopuptool.cs

显示ARCGIS 地图的 TIP 信息 即 地图MAP-TEXT-TIP

using System;
using System.Data;
using System.Configuration;
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 ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools;
using ESRI.ArcGIS.ADF.Web.UI.WebControls;
using System.Collections;

/// <summary>
/// IdentifyPopUpTool 的摘要说明
/// </summary>
public class IdentifyPopUpTool : IMapServerToolAction
{
	public IdentifyPopUpTool()
	{
		//
		// TODO: 在此处添加构造函数逻辑
		//
	}

    #region IMapServerToolAction 成员

    public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs args)
    {
        ESRI.ArcGIS.ADF.Web.UI.WebControls.Map map = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)args.Control;
        PointEventArgs pea = (PointEventArgs)args;
        System.Drawing.Point peanut = pea.ScreenPoint;
        ESRI.ArcGIS.ADF.Web.Geometry.Point point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(peanut.X, peanut.Y, map.Extent, (int)map.Width.Value, (int)map.Height.Value);
        System.Data.DataSet dataset = new System.Data.DataSet();
        string sourcelayername = "World Cities";
        IEnumerable func_enum = map.GetFunctionalities();
        //如果查询结果用TaskResult、GridResullt等窗口显示时，Server会自动产生一个GraphicsLayer，所以需要遍历Functionality，以获取相应IGISFunctionality进行查询
        foreach (ESRI.ArcGIS.ADF.Web.DataSources.IGISFunctionality gisfunctionality in func_enum)
        {
            ESRI.ArcGIS.ADF.Web.DataSources.IGISResource gisresource = gisfunctionality.Resource;
            if (gisresource is ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceLocal)
            {
                bool supportquery = gisresource.SupportsFunctionality(typeof(ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality));
                if (supportquery)
                {
                    ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality qfunc;
                    qfunc = (ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality)gisresource.CreateFunctionality(typeof(ESRI.ArcGIS.ADF.Web.DataSources.IQueryFunctionality), null);
                    string[] lids;
                    string[] lnames;
                    qfunc.GetQueryableLayers(null, out lids, out lnames);
                    int layer_index = 0;

                    for (int i = 0; i < lnames.Length; i++)
                    {
                        if (lnames[i] == sourcelayername)
                        {
                            if (lids[i] is string)
                            {
                                if (!int.TryParse((string)lids[i], out layer_index))
                                    layer_index = i;
                            }
                            else
                            {
                                layer_index = i;
                            }
                            break;
                        }
                    }
                    string[] lids1 = new string[1];
                    lids1[0] = layer_index.ToString();
                    System.Data.DataTable[] qdatatable = null;
                    qdatatable = qfunc.Identify(null, point, 3, ESRI.ArcGIS.ADF.Web.IdentifyOption.TopMostLayer, lids1);                //查询特定层
                    if (qdatatable == null)
                        break;
                    System.Data.DataTable dtable = qdatatable[0];
                    string strID = (string)dtable.Rows[0]["CITY_NAME"];
                    string strName = (string)dtable.Rows[0]["CNTRY_NAME"];
                    CallbackResult cr2 = new CallbackResult(null, null, "javascript", "showDetail('" + strID + "','" + strName + "','" + peanut.X.ToString() + "','" + peanut.Y.ToString() + "');");
                    map.CallbackResults.Add(cr2);
                }
            }
        }

        object[] oa = new object[1];
        string sa = "map.divObject.style.cursor = map.cursor";
        oa[0] = sa;
        CallbackResult cr1 = new CallbackResult(null, null, "javascript", oa);
        map.CallbackResults.Add(cr1);

        //throw new Exception("The method or operation is not implemented.");
    }

    #endregion
}