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  • 矢量数据的查询与选择显示

    /*按某属性值查询,并将查询结果显示在一个新的图层中*/

    // 将图层声明为矢量图层

    IFeatureLayer pFeatureLayer = GetGallery(gallery) as IFeatureLayer;

    // 创建选择集

    IFeatureSelection pFeatSel;

    pFeatSel = pFeatureLayer as IFeatureSelection;

    // 设定选定的颜色

    Color color = this.SelectedLineColor;

    pFeatSel.SelectionColor = GetRGB(color.R, color.G, color.B);

    // 创建查询器及查询添加

    IQueryFilter pQueryFilter;

    pQueryFilter = new QueryFilterClass();

    pQueryFilter.WhereClause = "FID = " + str;

    // 开始选择 注意第二个参数 New 是新建

    pFeatSel.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);

    // Add 是叠加

    pFeatSel.SelectFeatures(pQueryFilter, esriSelectionResultEnum.esriSelectionResultAdd, false);

    // 矢量图层定义

    IFeatureLayerDefinition pFeatLyrDef;

    pFeatLyrDef = pFeatureLayer as IFeatureLayerDefinition;

    // 将当前选择的数据创建至新图层

    string layerName = "MyLayer";

    IFeatureLayer pnewFeat;

    pnewFeat = pFeatLyrDef.CreateSelectionLayer(layerName, true, "", "");

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  • 原文地址:https://www.cnblogs.com/oftenlin/p/2671987.html
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