arcgis server 9.2代码阅读笔记一：在图层中增加一个点

 

代码来源 ARCGIS 9.2例子 

 

// Copyright 2006 ESRI 

// 

// All rights reserved under the copyright laws of the United States 

// and applicable international laws, treaties, and conventions. 

// 

// You may freely redistribute and use this sample code, with or 

// without modification, provided you include the original copyright 

// notice and use restrictions. 

// AUTHER：糊涂虫 2007.9.19 

// See use restrictions at /arcgis/developerkit/userestrictions. 

 

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 ESRI.ArcGIS.ADF.ArcGISServer; 

using ESRI.ArcGIS.Server; 

using ESRI.ArcGIS.Carto; 

using ESRI.ArcGIS.Geometry; 

using ESRI.ArcGIS.esriSystem; 

using ESRI.ArcGIS.Display; 

using System.Collections; 

using ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer; 

 

public class PointTool : IMapServerToolAction 

{ 

public void ServerAction(ToolEventArgs args) 

{ 

//获得图层控制 

ESRI.ArcGIS.ADF.Web.UI.WebControls.Map mapctrl; 

mapctrl = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map) args.Control; 

//获得屏幕上点的集合 

PointEventArgs pea = (PointEventArgs)args; 

System.Drawing.Point screen_point = pea.ScreenPoint; 

//获得图层的能力 

MapFunctionality mf = (MapFunctionality) mapctrl.GetFunctionality(0); 

//获得图层的描述 

ESRI.ArcGIS.ADF.ArcGISServer.MapDescription mapDescription = mf.MapDescription; 

//把屏幕上的点转换为ADF点 

ESRI.ArcGIS.ADF.Web.Geometry.Point adf_map_point = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(screen_point, mapctrl.Extent, mf.DisplaySettings.ImageDescriptor.Width, mf.DisplaySettings.ImageDescriptor.Height); 

//定义点对象 

PointN ags_map_point = ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.Converter.FromAdfPoint(adf_map_point); 

//设置点的颜色 

ESRI.ArcGIS.ADF.ArcGISServer.RgbColor rgb = new ESRI.ArcGIS.ADF.ArcGISServer.RgbColor(); 

rgb.Red = 0; 

rgb.Green = 255; 

rgb.Blue = 0; 

rgb.AlphaValue = 255; 

//设置点的标识符 

ESRI.ArcGIS.ADF.ArcGISServer.SimpleMarkerSymbol sms = new ESRI.ArcGIS.ADF.ArcGISServer.SimpleMarkerSymbol(); 

sms.Style = ESRI.ArcGIS.ADF.ArcGISServer.esriSimpleMarkerStyle.esriSMSDiamond; 

sms.Color = rgb; 

sms.Size = 20.0; 

//设置点 

ESRI.ArcGIS.ADF.ArcGISServer.MarkerElement marker = new ESRI.ArcGIS.ADF.ArcGISServer.MarkerElement(); 

marker.Symbol = sms; 

marker.Point = ags_map_point; 

 

if (mapDescription.CustomGraphics != null) 

{ 

//获得该图层上的所有对象 

GraphicElement[] oldges = mapDescription.CustomGraphics; 

//对象的个数 

int cnt = oldges.Length; 

//对象个数加一，并把新的对象（点）放进去 

GraphicElement[] newges = new GraphicElement[cnt + 1]; 

oldges.CopyTo(newges, 0); 

newges[cnt] = marker; 

mapDescription.CustomGraphics = newges; 

} 

else 

{ 

GraphicElement[] ges = new GraphicElement[1]; 

ges[0] = marker; 

mapDescription.CustomGraphics = ges; 

} 

 

mapctrl.Refresh(); 

} 

} 

 

这是一个在图层中添加点的例子，添加线段 图形和文字的代码基本上和这差不错，

 

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zhangjie_xiaoke/archive/2008/03/05/2150725.aspx