ArcEngine开发代码集合..doc

c#制作Symbol选择对话框现在要实现双击toccontrol中的某一层的symbol调出symbol选择对话框.vb中有示例实现了类似于arcmap中的symbol选择对话框,用到了ISymbolSelector接口. 你看的是AO的例子，在ENGINE中是没有这个接口的，不过这个例子转换成C＃的代码如下：private void axTOCCtl_OnDoubleClick(object sender, ESRI.ArcGIS.TOCControl.ITOCControlEvents_OnDoubleClickEvent e)??{?? IBasicMap map = null;?? object pOther = null;?? object index = null;?? if (e.button==1)?? {????m_TOCControl.HitTest(e.x, e.y, ref m_TocItem, ref map, ref m_TocLayer, ref pOther, ref index);????System.Drawing.Point pos=new System.Drawing.Point(e.x,e.y);????if (this.m_TocItem == esriTOCControlItem.esriTOCControlItemLegendClass)????{???? ESRI.ArcGIS.Carto.ILegendClass pLC=new LegendClassClass();???? ESRI.ArcGIS.Carto.ILegendGroup pLG=new LegendGroupClass();???? if(pOther is ILegendGroup)???? {??????pLG=(ILegendGroup)pOther;???? }???? pLC=pLG.get_Class((int)index);???? ISymbol pSym;???? pSym=pLC.Symbol;???? ESRI.ArcGIS.DisplayUI.ISymbolSelector pSS=new ESRI.ArcGIS.DisplayUI.SymbolSelectorClass();???? bool bOK=false;???? pSS.AddSymbol(pSym);???? bOK=pSS.SelectSymbol(0);???? if (bOK)???? {??????pLC.Symbol=pSS.GetSymbolAt(0);???? }???? this.axMapCtl.ActiveView.Refresh();???? this.axTOCCtl.Refresh();????}?? }??}那么在c#中怎么实现呢?有相应的接口吗?如何实现在MAP空间里选择一块区域打印如何实现在MAP空间里选择一块区域打印?用ARCENGINE里的对象实现,大家都来说说啊把选择的区域对每一个图层做区域切割进保存为shap文件在本地．在对每一个图层做shap文件保存的时候，同时把保存好的shap文件用本地文件的方式加载到一个MapControl控件（或者其它控件，我是自己用PictureBox来显示地图的）．然后通过控件把显示的地图数据打印出来就可以了．其中对图层进行切割的代码如下：‖=================================================‖TrimFeatureClass2ShpFile：??裁剪到shape文件‖‖pFC：????????????????裁剪的实体类‖pPolygon：?????????? 裁剪的范围‖strShpFileName：???? 输出的shape文件名‖bShowProgress：??????是否显示进度条‖pTrimedFeatureClass：输出的FeatureClass‖返回：输出的FeatureClass，nothing - 失败‖=================================================Public Function TrimFeatureClass2ShpFile(pFC As esriGeoDatabase.IFeatureClass, pPolygon As esriGeometry.IPolygon, strShpFileName As String, bShowProgress As Boolean) As esriGeoDatabase.IFeatureClass????On Err