ArcGIS Engine 10 开发手册(9-6)示例等高线赋值

时间: 2月10日阅读: 1,016 分类: ArcGIS Engine 10 开发手册标签: ArcGIS, ArcGIS Engine

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正文

等高线赋值在我们矢量化地形图的时候是一个非常有用的功能，ArcGIS 没有直接提供，不过没关系，我们说过ArcGIS 是一个开放的平台，将自己的接口几乎毫无保留的提供给了我们，我们可以利用它提供的接口实现这样一个功能，并且我们可以直接将这个功能集成在ArcMap中，主要代码如下：

示例代码

IWorkspaceFactory pWsF = new ShapefileWorkspaceFactory ();
IFeatureWorkspace pFtWs = pWsF.OpenFromFile (@"E:\arcgis\Engine\数据", 0)

as IFeatureWorkspace;

IFeatureClass pFClass = pFtWs.OpenFeatureClass ("ctour9_Clip");
IFeatureLayer pFtLayer = new FeatureLayerClass ();
pFtLayer.Name = "等高线";

pFtLayer.FeatureClass = pFClass;
axMapControl1.AddLayer (pFtLayer as ILayer);

axMapControl1.Refresh ();

pEngineEditor = new EngineEditorClass ();

//启动编辑

pEngineEditor.StartEditing (pFtWs as IWorkspace, axMapControl1.Map);
pEngineEditor.StartOperation ();

//设置目标图层

IEngineEditLayers pEditLayer = pEngineEditor as IEngineEditLayers;

pEditLayer.SetTargetLayer (pFtLayer, 0);

//设置任务流

pEngineEditor.CurrentTask = new CalculatContourTask () as IEngineEditTask;

//启用草图工具

ICommand pSketch = new ControlsEditingSketchToolClass ();
pSketch.OnCreate (axMapControl1.Object);
axMapControl1.CurrentTool = pSketch as ITool;

//结束编辑

if (pEngineEditor.EditState == esriEngineEditState.esriEngineStateEditing)

{

  pEngineEditor.StopEditing (true);

}