AE中根據屬性提取要素的功能

昨天幫一位朋友實現乙個根據屬性提取要素的功能，現記錄如下，以備後用：

先看看效果圖吧！

要素提取前

要素提取後

以下實現這個功能的關鍵**：

//主程式的路徑(這個是全域性變數)

//設定環境
geoprocessor gp = new geoprocessor();
gp.overwriteoutput = true;
//獲取要素圖層
ifeaturelayer player = this.axmapcontrol1.map.get_layer(0) as ifeaturelayer;
ifeatureclass inputfeatures = player.featureclass;
//使用select工具
esri.arcgis.analysistools.select selectfeature = new select();
selectfeature.in_features = inputfeatures;
selectfeature.out_feature_class = @"output\fgselect.shp";
selectfeature.where_clause = "gridcode>=50";
//執行
gp.execute(selectfeature,null);
// 將結果載入到當前地圖
iworkspacefactory pworkspacefactory = new shapefileworkspacefactoryclass();
iworkspace shpworksapce = pworkspacefactory.openfromfile(pfolder, 0);
ifeatureworkspace pfeatureworkspace=shpworksapce as ifeatureworkspace;
ifeatureclass pfeatureclass = pfeatureworkspace.openfeatureclass(pfilename);
ifeaturelayer outputlayer = new featurelayerclass();
outputlayer.featureclass = pfeatureclass;
outputlayer.name = pfeatureclass.aliasname;
this.axmapcontrol1.map.addlayer((ilayer)outputlayer);
this.axmapcontrol1.activeview.refresh();

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