AE实现右键点击TOC控件任意图层显示属性表

最新推荐文章于 2020-01-04 11:47:57 发布

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最新推荐文章于 2020-01-04 11:47:57 发布

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原文链接：http://www.cnblogs.com/gisak/archive/2011/04/03/2004348.html

本文介绍如何使用 ArcGIS 中的 TOC 控件来获取鼠标点击位置的图层信息，并展示如何在属性表窗口中加载该图层的属性数据。通过 AxTOCControl 的 HitTest 方法可以确定点击的图层，进一步在属性表窗口中实现图层数据的展示及交互。

在主窗口的代码：

View Code

private void axTOCControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.ITOCControlEvents_OnMouseDownEvent e)
{

if (e.button == 2)
{
esriTOCControlItem Item = new esriTOCControlItem();
IBasicMap pMap = new MapClass();
ILayer pLayer = new FeatureLayerClass();
object pOther = new object();
object pIndex = new object();
this.axTOCControl1.HitTest(e.x, e.y, ref Item, ref pMap, ref pLayer, ref pOther, ref pIndex);

IMapControl2 pMapControl = (IMapControl2)axMapControl1.Object;
IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
FrmAttribute pFemAttribute = new FrmAttribute(pMapControl, pFeatureLayer.Name);
pFemAttribute.Show();
}

}

其中用到的AxTOCControl.HitTest(e.x, e.y, pItem, pMap, pLayer, pOther, pIndex)方法，主要用于获得当前鼠标点击的图层，pItem, pMap, pLayer, pOther, pIndex几个参数均带ref关键字，返回e.x,e.y位置项所关联的对象，即图层，标注等。

在属性表窗口的代码：

View Code

public partial class FrmAttribute : Form
{
public IMapControl2 pMapControl;
public IMap pMap;
public int LayerIndex;
public string LayerName;

public FrmAttribute(IMapControl2 pMapControl,string LyrName)
{
InitializeComponent();
this.pMapControl = pMapControl;
pMap = pMapControl.Map;
LayerName = LyrName;
}

private void FrmAttribute_Load(object sender, EventArgs e)
{
GetValues();
}
public void GetValues()
{
for (int i = 0; i < pMap.LayerCount; i++)
{
if (LayerName == pMap.get_Layer(i).Name)
{
LayerIndex = i;
break;
}
}
IFeatureLayer pFeatureLayer = pMap.get_Layer(LayerIndex) as IFeatureLayer;
IFields pFields = pFeatureLayer.FeatureClass.Fields;
dataGridView1.ColumnCount = pFields.FieldCount;
for (int i = 0; i < pFields.FieldCount; i++)
{
string fieldname;
fieldname = pFields.get_Field(i).Name;
dataGridView1.Columns[i].Name = fieldname;
}
IFeatureCursor pFeatureCursor = pFeatureLayer.FeatureClass.Search(null, false);
IFeature pFeature = pFeatureCursor.NextFeature();
while (pFeature != null)
{
string[] fldvalue=new string[pFields.FieldCount];
for (int i = 0; i < pFields.FieldCount; i++)
{

if (pFields.get_Field(i).Name == "Shape")
{
fldvalue[i] = Convert.ToString(pFeature.Shape.GeometryType);
}
else
{
fldvalue[i] = Convert.ToString(pFeature.get_Value(i));
}
}
dataGridView1.Rows.Add(fldvalue);
pFeature = pFeatureCursor.NextFeature();
}

}

private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
string FID;
FID =dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();

if (FID == "")
return;
IActiveView pActiveView;
pActiveView = (IActiveView)pMap;
pMap.ClearSelection();
pActiveView.Refresh();

IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.WhereClause = "FID=" + FID;

IFeatureLayer pFeatureLayer;
pFeatureLayer = (IFeatureLayer)pMap.get_Layer(LayerIndex);

IFeatureCursor pFeatureCursor;
pFeatureCursor = pFeatureLayer.Search(pQueryFilter, false);

IFeature pFeature;
pFeature = pFeatureCursor.NextFeature();

pMap.SelectFeature(pFeatureLayer, pFeature);

IPoint pPoint = new PointClass();
pPoint.X = (pFeature.Extent.XMin + pFeature.Extent.XMax) / 2;
pPoint.Y = (pFeature.Extent.YMin + pFeature.Extent.YMax) / 2;

pMapControl.CenterAt(pPoint);

pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
}
}

转载于:https://www.cnblogs.com/gisak/archive/2011/04/03/2004348.html