identify工具.docx

首先判断identify工具是否启动 bool showidentify = false;// 全局变量，identify工具是否启动 public void identify_Click(object sender, EventArgs e) { showidentify = true; }然后在axMapControl1.OnMouseDown中添加代码： axMapControl1.OnMouseDown += (sender, e) = { if (e.button == 1 showidentify) { axMapControl1.MousePointer = esriControlsMousePointer.esriPointerArrow; #region Identify IFeatureLayer pFL; IFeatureSelection pFeatureSelection; IEnvelope pEnv; IGeometry pGeometry; ISpatialFilter pSpatialFilter; ISelectionSet pSelectionSet; IEnumIDs pEnumIDs; IFeature pFeature; //用于查询的矩形（相当于点的缓冲区，这样比生成缓冲区节省资源）， //envelope的大小根据实际情况设定，以方便使用为准 pEnv = new EnvelopeClass(); pEnv.PutCoords(e.mapX - 200, e.mapY - 200, e.mapX + 200, e.mapY + 200); pGeometry = pEnv as IGeometry; pSpatialFilter = new SpatialFilterClass(); pSpatialFilter.Geometry = pGeometry; pSpatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects; //运用singleton模式设计窗体，只允许存在一个ShowAttributeTable实例 identify frmShowAttribute = identify.CreateForm(); frmShowAttribute.Show(); frmShowAttribute.AttributeTreeView.Nodes.Clear();//首先清除上次结果 frmShowAttribute.AttributeTreeView.ShowLines = true; frmShowAttribute.AttributeTreeView.ShowPlusMinus = true; frmShowAttribute.pActiveView = this.axMapControl1.ActiveView; frmShowAttribute.pMap = axMapControl1.Map; frmShowAttribute.pSFilter = pSpatialFilter; TreeNode rootNode = new TreeNode(); rootNode.Text = 属性信息;//添加根节点“属性信息” frmShowAttribute.AttributeTreeView.Nodes.Add(rootNode); for (int i = 0; i this.axMapControl1.LayerCount; i++) { pFL = this.axMapControl1.get_Layer(i) as IFeatureLayer; if (pFL.Visible pFL.Selectable) { pFeatureSelection = pFL as IFeatureSelection; //选择之前先清除，这是个好习惯（除非是用Add方式） pFeatureSelection.Clear(); pFeatureSelection.SelectFeatures(pSpatialFilter, esriSelectionResultEnum.esriSelectionResultNew, true); pSelectionSet = pFeatureSelection.SelectionSet; axMapControl1.ActiveView.Refresh(); //如果选择集内有Feature if (pSelectionSet.Count 0) { //构建图层节点并添加到根节点 TreeNode layerNameNode = new TreeNode();