C#+AE要素的操作，添加、更新和删除要素

开发环境：VS2010+ArcObject10.1

功能介绍：C#+AE对要素的操作，包括添加要素，查找特定的要素并更新要素、删除要素。

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;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Display;

namespace Test_FieldsQuery
{
    public partial class Form1 : Form
    {
        ILayer pLayer1;
        IFeatureLayer pFeatureLayer1;
        IFeatureClass pFeatureClass1;

        ILayer pLayer;
        IFeatureLayer pFeatureLayer;
        IFeatureClass pFeatureClass;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            axMapControl1.AddShapeFile("数据\", "AsiaCities_new.shp");
            axMapControl1.AddShapeFile("数据\", "AsiaCities_old.shp");

            pLayer1 = axMapControl1.get_Layer(1);
            pFeatureLayer1 = pLayer1 as IFeatureLayer;
            pFeatureClass1 = pFeatureLayer1.FeatureClass;

            pLayer = axMapControl1.get_Layer(0);
            pFeatureLayer = pLayer as IFeatureLayer;
            pFeatureClass = pFeatureLayer.FeatureClass;
        }

          #region 添加、更新和删除要素对象的操作
        private void button4_Click(object sender, EventArgs e)
        {
            AddRow(pFeatureClass1);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            IQueryFilter pQueryFilter = new QueryFilterClass();
            pQueryFilter.WhereClause = ""FIRST_CONT" = 'esri'";
            IFeatureCursor pFeatureCursor = pFeatureClass1.Search(pQueryFilter, false);
            IFeature pFeature = pFeatureCursor.NextFeature();

            UpdateRow(pFeatureClass1, pFeature);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            IQueryFilter pQueryFilter = new QueryFilterClass();
            pQueryFilter.WhereClause = ""FIRST_CONT" = 'esriChina'";
            IFeatureCursor pFeatureCursor = pFeatureClass1.Search(pQueryFilter, false);
            IFeature pFeature = pFeatureCursor.NextFeature();

            DeleteRow(pFeatureClass1, pFeature);
        }
        /// <summary>
        /// 添加要素
        /// </summary>
        /// <param name="pFeatureClass">要素类</param>
        private void AddRow(IFeatureClass pFeatureClass)
        {
            ITable pTable = pFeatureClass as ITable;
            IRow pRow;
            int i = pTable.FindField("FIRST_CONT");
            //添加记录
            pRow = pTable.CreateRow();
            pRow.set_Value(i, "esri");//设置属性值
            pRow.Store();
        }
        /// <summary>
        /// 更新要素
        /// </summary>
        /// <param name="pFeatureClass">要素类</param>
        /// <param name="pFeature">要更新的要素</param>
        private void UpdateRow(IFeatureClass pFeatureClass, IFeature pFeature)
        {
            ITable pTable = pFeatureClass as ITable;
            IRow pRow;
            int i = pTable.FindField("FIRST_CONT");
            //更新记录
            pRow = pTable.GetRow(pFeature.OID);
            pRow.set_Value(i, "esriChina");
            pRow.Store();
        }
        /// <summary>
        /// 删除要素
        /// </summary>
        /// <param name="pFeatureClass">要素类</param>
        /// <param name="pFeature">要删除的要素</param>
        private void DeleteRow(IFeatureClass pFeatureClass, IFeature pFeature)
        {
            ITable pTable = pFeatureClass as ITable;
            IRow pRow;
            //删除记录
            pRow = pTable.GetRow(pFeature.OID);
            pRow.Delete();
        } 
        #endregion
    }
}