TOCControl上实现右键

第一步：新建另外一个窗体

• 首先要定义一个全局变量 ILayer。
• 窗体要带参数，以便将 ILayer 传递过来。
• 获取属性列表。

  using System;
  using System.Collections.Generic;
  using System.ComponentModel;
  using System.Data;
  using System.Drawing;
  using System.Linq;
  using System.Text;
  using System.Windows.Forms;
  using ESRI.ArcGIS.Carto;
  using ESRI.ArcGIS.Geodatabase;
  
  namespace MyGIS
  {
      public partial class Property : Form
      {
          ILayer pLayer;
          public Property(ILayer layer)
          {
              InitializeComponent();
              pLayer = layer;
          }
  
          private void Property_Load(object sender, EventArgs e)
          {
              IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;
              IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
              IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);
              IFeature pFeature = pFeatureCursor.NextFeature();
              IFields pFields = pFeatureClass.Fields;
  
              DataTable pDataTable = new DataTable();
              for (int i = 0; i < pFields.FieldCount; i++)//获取所有列
              {
                  DataColumn pColumn = new DataColumn(pFields.get_Field(i).Name);
                  pDataTable.Columns.Add(pColumn);
              }
              while (pFeature != null)
              {
                  DataRow pRow = pDataTable.NewRow();
                  for (int i = 0; i < pFields.FieldCount; i++)
                  {
                      pRow[i] = pFeature.get_Value(i);
                  }
                  pDataTable.Rows.Add(pRow);
                  pFeature = pFeatureCursor.NextFeature();
              }
              dataGridView1.DataSource = pDataTable;
  
          }
      }
  }

  第二步：建立右键菜单项

  • 添加一个 ContextMenuStrip 控件，然后增加几个菜单项。
  • 特别注意加入一个菜单项为“显示属性”。
  • 判断在什么情况下显示右键菜单。

     ILayer pGlobalFeatureLayer;
     private void axTOCControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.ITOCControlEvents_OnMouseDownEvent e)
            {
                if (e.button == 2)
                {
                    esriTOCControlItem item = esriTOCControlItem.esriTOCControlItemNone;
                    IBasicMap pBasicMap = null;
                    ILayer pLayer = null;
                    object other = null;
                    object index = null;
                    axTOCControl1.HitTest(e.x, e.y, ref item, ref pBasicMap, ref pLayer, ref other, ref index);
                    pGlobalFeatureLayer = pLayer;//实现赋值
                    if (item == esriTOCControlItem.esriTOCControlItemLayer)//点击是图层的话，就显示右键菜单
                    {
                        contextMenuStrip1.Show(axTOCControl1, new System.Drawing.Point(e.x, e.y));//显示右键菜单，并定义其位置，正好在鼠标处显示
                    }
                }
            }
    
            private void 显示属性ToolStripMenuItem_Click(object sender, System.EventArgs e)
            {
                Property frm = new Property(pGlobalFeatureLayer);
                frm.Text = "Attributies of" + pGlobalFeatureLayer.Name;
                frm.ShowDialog();
            }