程序代码：

using System;
using System.Collections.Generic;
using  System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.Diagnostics;
using System.Reflection;

//import ESRI namespaces
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Output;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.Analyst3D;
using ESRI.ArcGIS.GlobeCore;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.DisplayUI;
using ESRI.ArcGIS.GeoAnalyst;
using ESRI.ArcGIS.DataSourcesRaster;

//import Excel namespaces
using Excel = Microsoft.Office.Interop.Excel;