C#+ArcEgine开发（3）属性表的各种操作（1）

书上的例子不大好，还好网上资料挺多。

就参考网上各种资料的学习过程： https://blog.youkuaiyun.com/lysc_forever/article/details/17093405

这篇写得很详细了，不过，根据我自己的情况，有些方面修改了一下。

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一、打开属性表

1、将contextMenuStrip拖到控件上，再添加一个“打开属性表”。这就是TOCCControl的右键菜单了

2、新建一个窗体文件AttributeTable，将menuStrip和dataGridView拖到窗体上。menuStrip上还会加一些功能，之后再说，现在先不管。

代码如下：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Geodatabase;

namespace demo1地图浏览
{
    public partial class AttributeTable : Form
    {
        public DataTable attributeTable;
        ILayer mLayer;
        public AttributeTable(ILayer layer)
        {
            InitializeComponent();
            mLayer = layer;
        }
       
        private void AttributeTable_Load(object sender, EventArgs e)
        {
            IFeatureLayer pFeatureLayer = mLayer as IFeatureLayer;
            IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
            DataTable dt = new DataTable();
            if (pFeatureClass != null)
            {
                DataColumn dc;
                for (int i = 0; i < pFeatureClass.Fields.FieldCount; i++)
                {
                    dc = new DataColumn(pFeatureClass.Fields.get_Field(i).Name);
                    dt.Columns.Add(dc);//获取所有列的属性值
                }
                IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);
                IFeature pFeature = pFeatureCursor.NextFeature();
                DataRow dr;
                while (pFeature != null)
                {
                    dr = dt.NewRow();
                    for (int j = 0; j < pFeatureClass.Fields.FieldCount; j++)
                    {
                        //判断feature的形状
                        if (pFeature.Fields.get_Field(j).Name == "Shape")
                        {
                            if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint)
                            {
                                dr[j] = "点";
                            }
                            if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline)
                            {
                                dr[j] = "线";
                            }
                            if (pFeature.Shape.GeometryType == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon)
                            {
                                dr[j] = "面";
                            }
                        }
                        else
                        {
                            dr[j] = pFeature.get_Value(j).ToString();//增加行
                        }
                    }
                    dt.Rows.Add(dr);
                    pFeature = pFeatureCursor.NextFeature();
                }
                dataGridView1.DataSource = dt;
            }
        }
    }
}

3、回到主窗体，添加TOCCControl的OnMouseDown事件，其实就是右键

 public ILayer layer;  //这个是全局变量
        private void axTOCControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.ITOCControlEvents_OnMouseDownEvent e)
        {
            if (e.button == 2)
            {
                esriTOCControlItem item = esriTOCControlItem.esriTOCControlItemNone;
                IBasicMap map = new MapClass();
                layer = new FeatureLayerClass();
                object other = new object();
                object index = new object();
                axTOCControl1.HitTest(e.x, e.y, ref item, ref map, ref layer, ref other, ref index); //实现赋值,ref的参数必须初始化
                if (item == esriTOCControlItem.esriTOCControlItemLayer) ////点击的是图层的话，就显示右键菜单
                {
                    contextMenuStrip1.Show(axTOCControl1, new System.Drawing.Point(e.x, e.y));
                }
            }

        }

再在“打开属性表”上点两下，其实是添加它的Click事件

  private void 打开属性表ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            AttributeTable attributeTable = new AttributeTable(layer);
            attributeTable.Text = "属性表：" + layer.Name;
            attributeTable.ShowDialog();
        }

打开属性表的功能就完成了，看看效果

二、点击属性表上的数据，图层上高亮显示

上一步骤里面主窗体里的有一段代码是这样的

private void 打开属性表ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            AttributeTable attributeTable = new AttributeTable(layer);
            attributeTable.Text = "属性表：" + layer.Name;
            attributeTable.ShowDialog();
        }

改成这样：其实就是换成this了，把主窗体传进子窗体，便于在子窗体调用主窗体的控件。把axMapControl控件的Modifier属性改为public。（其实这样用不大好，最好是用委托，但先这样吧，委托等我以后再说）

  private void 打开属性表ToolStripMenuItem_Click(object sender, EventArgs e)
        {
           
            AttributeTable attributeTable = new AttributeTable(this);
            attributeTable.Text = "属性表：" + layer.Name;
            attributeTable.ShowDialog();
        }

然后到AttributeTable里去，加个全局变量 private Form1 form。把构造函数改成这样：

 private Form1 form1;
        public AttributeTable(Form1 form1)
        {
            InitializeComponent();
            this.form1 = form1;
            mLayer = form1.layer;
           
        }

添加dataGridView的RowHeaderMouseClick事件，选中高亮显示的代码如下：

//选中高亮显示
       
        private void dataGridView1_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            IQueryFilter pQuery = new QueryFilterClass();
            int count = this.dataGridView1.SelectedRows.Count;
            string val, col;
            col = this.dataGridView1.Columns[0].Name;
            //当只选中一行时
            if (count == 1)
            {
                val = this.dataGridView1.SelectedRows[0].Cells[col].Value.ToString();
                //设置高亮要素的查询条件
                pQuery.WhereClause = col + "=" + val;
            }
            else//选中多行
            {
                int i;
                string str;
                for (i = 0; i < count - 1; i++)
                {
                    val = this.dataGridView1.SelectedRows[i].Cells[col].Value.ToString();
                    str = col + "=" + val + "OR";
                    pQuery.WhereClause += str;
                }
                //添加最后一个要素的条件
                val = this.dataGridView1.SelectedRows[i].Cells[col].Value.ToString();
                str = col + "=" + val;
                pQuery.WhereClause += str;

            }
            //ILayer pLayer = (ILayer)m_mapControl.CustomProperty;
            IFeatureLayer pFLayer = mLayer as IFeatureLayer;
            IFeatureSelection pFeatSelection;
            pFeatSelection = pFLayer as IFeatureSelection;
            pFeatSelection.SelectFeatures(pQuery, esriSelectionResultEnum.esriSelectionResultNew, false);
            IViewRefresh viewRefresh = form1.axMapControl1.Map as IViewRefresh;
            viewRefresh.ProgressiveDrawing = true;
            viewRefresh.RefreshItem(mLayer);
        }

效果就是这样的：

这一篇先写这两个操作，还有一些操作就写到下一篇里了