arcgis server 添加一个Grphic点例子

楼主^#

更多发布于：2008-02-18 10:45

（参考代码位置在ESRI帮助ArcGIS_AddGraphics_CSharp\App_Code\PointTool.cs）
1. 开发环境，arcGIS server 9.2 sp4,VS2005
2. 通过ESRI提供的开发模板建立一个框架。
3. 进入代码，在App_Code右键，建立一个类，名称为：clsDrawPoint.cs
4. 点击Default.aspx，进入“源模式“，拷贝如下代码：
 <esri:Tool ClientAction="Point" DefaultImage="~/images/point.gif" DisabledImage="~/images/pointD.gif" HoverImage="~/images/pointU.gif" JavaScriptFile="Point" Name="ToolDrawPoint" SelectedImage="~/images/fixedzoominD.gif" ServerActionAssembly="App_Code" ServerActionClass="clsDrawPoint" Text="画点" ToolTip="画一个点在地图上" /> 到<ToolbarItems>节点中。
5.双击clsDrawPoint.cs，添加如下代码public class clsDrawPoint:ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools.IMapServerToolAction ，及让类继承于IMapServerToolAction，取得鼠标点击事件。
添加如下代码：
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.Display;
using stdole;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
 
/// <summary>
/// 绘制一个点在地图上
/// </summary>
public class clsDrawPoint:ESRI.ArcGIS.ADF.Web.UI.WebControls.Tools.IMapServerToolAction 
{
 public clsDrawPoint()
 {
 
 //
 // TOD 在此处添加构造函数逻辑
 //
 }
 
 #region IMapServerToolAction 成员
 /// <summary>
 /// 响应地图上鼠MOUSEDOWN事件,据我所知，应该是MouseUp事件，但是。。。
 /// </summary>
 /// <param name="args">从地图上来的参数，强制转换为一个点事件</param>
 public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs args)
 {
 
 //取得Map
 ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)args.Control;
 
 //强制转换为点事件，这样可以取得事件的点屏幕坐标
 ESRI.ArcGIS.ADF.Web.UI.WebControls.PointEventArgs pPontEventArgs = (ESRI.ArcGIS.ADF.Web.UI.WebControls.PointEventArgs)args;
 System.Drawing.Point screenPoint = pPontEventArgs.ScreenPoint;
 ESRI.ArcGIS.ADF.Web.Geometry.Point adfPoint = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(screenPoint, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
 ESRI.ArcGIS.ADF.ArcGISServer.PointN agsSoapPoint = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfPoint(adfPoint);
 //取得功能集合
 ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality agsMF = (ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapFunctionality)adfMap.GetFunctionality(0);
 ESRI.ArcGIS.ADF.ArcGISServer.MapDescription agsSoapMapDesc = agsMF.MapDescription;
 
 //设置鼠标点
 agsSoapPoint.IDSpecified = false;
 agsSoapPoint.MSpecified = false;
 agsSoapPoint.ZSpecified = false;
 agsSoapPoint.SpatialReference = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfSpatialReference(adfMap.SpatialReference);
 
 //设置颜色
 ESRI.ArcGIS.ADF.ArcGISServer.RgbColor agsSoapRgbcolor = new ESRI.ArcGIS.ADF.ArcGISServer.RgbColor();
 agsSoapRgbcolor.Red = 255;
 agsSoapRgbcolor.Green = 0;
 agsSoapRgbcolor.Blue = 0;
 agsSoapRgbcolor.AlphaValue = 255;
 
 //点符号的颜色，样式和大小
 ESRI.ArcGIS.ADF.ArcGISServer.SimpleMarkerSymbol agsSoapSimpleMarkerSymbol = new ESRI.ArcGIS.ADF.ArcGISServer.SimpleMarkerSymbol();
 agsSoapSimpleMarkerSymbol.Style = ESRI.ArcGIS.ADF.ArcGISServer.esriSimpleMarkerStyle.esriSMSCross ;
 agsSoapSimpleMarkerSymbol.Color = agsSoapRgbcolor;
 agsSoapSimpleMarkerSymbol.Size = 5;
 
 //设置Element的符号和位置
 ESRI.ArcGIS.ADF.ArcGISServer.MarkerElement agsSoapMarkerEle = new ESRI.ArcGIS.ADF.ArcGISServer.MarkerElement();
 agsSoapMarkerEle.Symbol = agsSoapSimpleMarkerSymbol;
 agsSoapMarkerEle.Point = agsSoapPoint;
 
 //添加到Graphic中
 if (agsSoapMapDesc.CustomGraphics != null)
 {
 ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[] agsSoapGraphicsEleArrayOld = agsSoapMapDesc.CustomGraphics;
 int dElementCount = agsSoapGraphicsEleArrayOld.Length;
 ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[] agsSoapGraphicsEleArrayNew = new ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[dElementCount + 1];
 agsSoapGraphicsEleArrayOld.CopyTo(agsSoapGraphicsEleArrayNew, 0);
 agsSoapGraphicsEleArrayNew[dElementCount] = agsSoapMarkerEle;
 agsSoapMapDesc.CustomGraphics = agsSoapGraphicsEleArrayNew;
 }
 else
 {
 ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[] agsSoapGraphicEle = new ESRI.ArcGIS.ADF.ArcGISServer.GraphicElement[1];
 agsSoapGraphicEle[0] = agsSoapMarkerEle;
 agsSoapMapDesc.CustomGraphics = agsSoapGraphicEle;
 }
 
 //刷新地图
 if (adfMap.ImageBlendingMode == ESRI.ArcGIS.ADF.Web.UI.WebControls.ImageBlendingMode.Browser)
 {
 adfMap.RefreshResource(agsMF.Resource.Name);
 }
 else
 {
 adfMap.Refresh();
 }
 
 }
 #endregion
}

发布后图片为： <a href="http://groups.google.com/group/arc_gis/web/arcGIS%20Server%5Darcgis%20server%20%E6%B7%BB%E5%8A%A0%E4%B8%80%E4%B8%AAGrphic%E7%82%B9%E4%BE%8B%E5%AD%90.JPG?hl=zh-CN" target="_blank" ><IMG src="http://groups.google.com/group/arc_gis/web/arcGIS%20Server%5Darcgis%20server%20%E6%B7%BB%E5%8A%A0%E4%B8%80%E4%B8%AAGrphic%E7%82%B9%E4%BE%8B%E5%AD%90.JPG?hl=zh-CN;display=thumb;width=420;height=420"></A>

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arcgis server 添加一个Grphic点例子

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