Arcgis server .net(vs2003) 绘制直线, 折线,多边形的方法(webgis)

楼主^#

更多发布于：2006-06-30 10:25

Arcgis server .net(vs2003) 绘制直线, 折线,多边形的方法(空间数据SDE Oracle)
 开发语言: c# (Webgis)
 1. 绘直线
 private void Map1_Line(object sender, LineEventArgs args) { if (args.ToolName == "Line") { IFeatureLayer flayer = GetFeatureLayer(ddlLayers.SelectedIndex); //获取当前活动图层了函数,就是调用GetFeatureLayer(int lyid)函数 if (flayer == null) return; if (flayer.FeatureClass.ShapeType != ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline) { string sc; sc = "<script language=javascript>alert('当前图层类型不对！')</script>"; Page.RegisterClientScriptBlock("ShapeTypeError",sc); return; }
 //生成直线 ESRI.ArcGIS.Server.IServerContext context; ESRI.ArcGIS.Server.WebControls.WebMap webmap = Map1.CreateWebMap(); webmap.ManageLifetime(flayer); context = webmap.ServerContext; ESRI.ArcGIS.Geometry.IPolyline Polyline = context.CreateObject("esriGeometry.Polyline") as ESRI.ArcGIS.Geometry.IPolyline; webmap.ManageLifetime(Polyline); ESRI.ArcGIS.Geometry.IPoint pt;
 ESRI.ArcGIS.Geometry.IGeometryCollection ringcol = context.CreateObject("esriGeometry.Polyline") as ESRI.ArcGIS.Geometry.IGeometryCollection; webmap.ManageLifetime(ringcol);
 ESRI.ArcGIS.Geometry.IPointCollection ptcol =context.CreateObject("esriGeometry.Path") as ESRI.ArcGIS.Geometry.IPointCollection;// new PathClass(); webmap.ManageLifetime(ptcol); object obj=Type.Missing;
 pt = webmap.ToMapPoint(args.BeginPoint.X,args.BeginPoint.Y); ptcol.AddPoint(pt,ref obj,ref obj);
 pt = webmap.ToMapPoint(args.EndPoint.X,args.EndPoint.Y); ptcol.AddPoint(pt,ref obj,ref obj);
 ringcol.AddGeometry(ptcol as IGeometry,ref obj,ref obj); Polyline =ringcol as IPolyline; 
 //将多直线到图层中 ESRI.ArcGIS.Geodatabase.IFeature feature = flayer.FeatureClass.CreateFeature(); feature.Shape = Polyline as IGeometry; feature.Store(); webmap.Refresh();
 webmap.Dispose(); }

 }
 2. 绘折线
private void Map1_Polyline(object sender, PolylineEventArgs args) { if (args.ToolName == "Polyline") { IFeatureLayer flayer = GetFeatureLayer(ddlLayers.SelectedIndex); //获取当前活动图层了函数，就是调用GetFeatureLayer(int lyid)函数 if (flayer == null) return; if (flayer.FeatureClass.ShapeType != ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline) { string sc; sc = "<script language=javascript>alert('当前图层类型不对！')</script>"; Page.RegisterClientScriptBlock("ShapeTypeError",sc); return; }
 //生成直线 ESRI.ArcGIS.Server.IServerContext context; ESRI.ArcGIS.Server.WebControls.WebMap webmap = Map1.CreateWebMap(); webmap.ManageLifetime(flayer); context = webmap.ServerContext; ESRI.ArcGIS.Geometry.IPolyline Polyline = context.CreateObject("esriGeometry.Polyline") as ESRI.ArcGIS.Geometry.IPolyline; webmap.ManageLifetime(Polyline); ESRI.ArcGIS.Geometry.IPoint pt;
 ESRI.ArcGIS.Geometry.IGeometryCollection ringcol = context.CreateObject("esriGeometry.Polyline") as ESRI.ArcGIS.Geometry.IGeometryCollection; webmap.ManageLifetime(ringcol);
 ESRI.ArcGIS.Geometry.IPointCollection ptcol =context.CreateObject("esriGeometry.Path") as ESRI.ArcGIS.Geometry.IPointCollection;// new PathClass(); webmap.ManageLifetime(ptcol); object obj=Type.Missing;
 for (int i=0;i<=args.Vectors.Length-1;i++) { pt = webmap.ToMapPoint(args.Vectors.X,args.Vectors.Y); ptcol.AddPoint(pt,ref obj,ref obj); } ringcol.AddGeometry(ptcol as IGeometry,ref obj,ref obj); Polyline =ringcol as IPolyline; 
 //将折线保存到图层中 ESRI.ArcGIS.Geodatabase.IFeature feature = flayer.FeatureClass.CreateFeature(); feature.Shape = Polyline as IGeometry; feature.Store(); webmap.Refresh();
 webmap.Dispose(); }

 }

 3. 绘多边形
private void Map1_Polygon(object sender, PolygonEventArgs args) { if (args.ToolName == "Polygon") { IFeatureLayer flayer = GetFeatureLayer(ddlLayers.SelectedIndex); //获取当前活动图层了函数，就是调用GetFeatureLayer(int lyid)函数 if (flayer == null) return; if (flayer.FeatureClass.ShapeType != ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon) { string sc; sc = "<script language=javascript>alert('当前图层类型不对！')</script>"; Page.RegisterClientScriptBlock("ShapeTypeError",sc); return; }
 //生成多边形 ESRI.ArcGIS.Server.IServerContext context; ESRI.ArcGIS.Server.WebControls.WebMap webmap = Map1.CreateWebMap(); webmap.ManageLifetime(flayer); context = webmap.ServerContext; ESRI.ArcGIS.Geometry.IPolygon poly = context.CreateObject("esriGeometry.Polygon") as ESRI.ArcGIS.Geometry.IPolygon; //'new ag.PolygonClass(); webmap.ManageLifetime(poly); ESRI.ArcGIS.Geometry.IPoint pt; ESRI.ArcGIS.Geometry.IGeometryCollection ringcol = context.CreateObject("esriGeometry.Polygon") as ESRI.ArcGIS.Geometry.IGeometryCollection;// new PolygonClass(); webmap.ManageLifetime(ringcol); ESRI.ArcGIS.Geometry.IPointCollection ptcol =context.CreateObject("esriGeometry.Ring") as ESRI.ArcGIS.Geometry.IPointCollection;// new RingClass(); webmap.ManageLifetime(ptcol); object obj=Type.Missing; for (int i=0;i<=args.Vectors.Length-1;i++) { pt = webmap.ToMapPoint(args.Vectors.X,args.Vectors.Y); ptcol.AddPoint(pt,ref obj,ref obj); } ringcol.AddGeometry(ptcol as IGeometry,ref obj,ref obj); poly = ringcol as IPolygon; 
 //将多边形写入到图层中 ESRI.ArcGIS.Geodatabase.IFeature feature = flayer.FeatureClass.CreateFeature(); feature.Shape = poly as IGeometry; feature.Store(); webmap.Refresh();
 webmap.Dispose(); }
 }
4. GetFeatureLayer(int lyid) 函数
private IFeatureLayer GetFeatureLayer(int lyid) { WebMap webmap = Map1.CreateWebMap(); try { ILayer layer = (webmap.MapServer as IMapServerObjects).get_Layer(webmap.DataFrame,lyid); if (layer==null) return null; else { return (layer as IFeatureLayer); } } finally { webmap.Dispose(); } }
5. 工作区编辑函数 StartEdit()
private void StartEdit() { using (WebMap webMap =Map1.CreateWebMap() ) { IServerContext sc=webMap.ServerContext;
 IMapServer map = sc.ServerObject as IMapServer; IMapServerObjects mapobj = map as IMapServerObjects; IMap fgmap = mapobj.get_Map(webMap.DataFrame); IFeatureLayer fl = fgmap.get_Layer(ddlLayers.SelectedIndex) as IFeatureLayer; IDataset ds = fl.FeatureClass as IDataset; IWorkspaceEdit ws = ds.Workspace as IWorkspaceEdit;
 ws.StartEditing(true); ws.StartEditOperation();
 } 
 } 6. 工作区停止编辑数据保存函数SaveEdit();
private void SaveEdit() { using (WebMap webMap =Map1.CreateWebMap() ) { IServerContext sc=webMap.ServerContext;
 IMapServer map = sc.ServerObject as IMapServer; IMapServerObjects mapobj = map as IMapServerObjects; IMap fgmap = mapobj.get_Map(webMap.DataFrame); IFeatureLayer fl = fgmap.get_Layer(ddlLayers.SelectedIndex) as IFeatureLayer; IDataset ds = fl.FeatureClass as IDataset; IWorkspaceEdit ws = ds.Workspace as IWorkspaceEdit; ws.StartEditOperation(); ws.StopEditing(true); } 
 } 7. 绘图方法初始化设置
private void InitializeComponent() { this.Toolbar1.CommandClick += new ESRI.ArcGIS.Server.WebControls.ToolbarCommandClickEventHandler(this.Toolbar1_CommandClick); this.Map1.Polygon += new ESRI.ArcGIS.Server.WebControls.MapPolygonEventHandler(this.Map1_Polygon); this.Map1.Polyline += new ESRI.ArcGIS.Server.WebControls.MapPolylineEventHandler(this.Map1_Polyline); this.Map1.Line += new ESRI.ArcGIS.Server.WebControls.MapLineEventHandler(this.Map1_Line); this.Load += new System.EventHandler(this.Page_Load); this.Map1.Point+=new MapPointEventHandler(Map1_Point);
 }
作其它图形,待续.

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amw269756 路人甲注册日期2005-01-30 发帖数58 QQ 铜币258枚威望0点贡献值0点银元0个加关注写私信	1楼^# 发布于：2006-07-11 09:38 多好的东西啊.怎么没有支持呢.这年头难到没有人用这个工具开发.
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cl991036

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2楼^#

发布于：2006-07-11 09:55

net现在用的人慢慢多了

没钱又丑，农村户口。头可断，发型一定不能乱。邮箱:gisempire@qq.com

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reinamco 路人甲注册日期2006-05-17 发帖数6 QQ 铜币134枚威望0点贡献值0点银元0个加关注写私信	3楼^# 发布于：2006-07-24 10:14 支持啊现在正在学习ARCGIS SERVER就是觉得资料太少了<img src="images/post/smile/dvbbs/em01.gif" /><img src="images/post/smile/dvbbs/em02.gif" />
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gis

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4楼^#

发布于：2006-07-24 10:46

在用arcgis server，不过使用java adf
复杂的编辑和分析功能，要在网上实现，对硬件的要求是否太高？：）

GIS麦田守望者，期待与您交流。

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amw269756 路人甲注册日期2005-01-30 发帖数58 QQ 铜币258枚威望0点贡献值0点银元0个加关注写私信	5楼^# 发布于：2006-08-14 12:47 <P>是啊. 现在的机子配置越来越高啊.服务器好一点就行啦.</P>
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zhmzhgis 路人甲注册日期2005-03-31 发帖数20 QQ 铜币214枚威望0点贡献值0点银元0个加关注写私信	6楼^# 发布于：2006-10-11 14:14 谢谢楼主，写了这么好的东西
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Arcgis server .net(vs2003) 绘制直线, 折线,多边形的方法(webgis)

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