asp.net(c#) 将dbf转换为xls或wps，并将数据的列名改成中文；并判断本机是否安装office2003,2007和wps2007,2010

using Microsoft.Office.Interop.Excel;//转换为excel时，需要引用此命名空间

using ET;//转换为wps时，需要引用此命名空间
using KSO;//转换为wps时，需要引用此命名空间
当转换为excel时，需要引入Microsoft.Office.Interop.Excel.dll;当转换为wps时，需要引入Interop.ET.dll，Interop.KSO.dll;

#region 查询注册表,判断本机是否安装office2003,2007和wps
        public int ExistsRegedit()
        {
            int ifused = 0;
            RegistryKey rk = Registry.LocalMachine;
            RegistryKey akey = rk.OpenSubKey(@"SOFTWARE\Microsoft\Office\11.0\Excel\InstallRoot\");//查询2003

　　　　RegistryKey akey07 = rk.OpenSubKey(@"SOFTWARE\Microsoft\Office\12.0\Excel\InstallRoot\");//查询2007
            RegistryKey akeytwo = rk.OpenSubKey(@"SOFTWARE\Kingsoft\Office\6.0\common\");//查询wps
            //检查本机是否安装Office2003
            if (akey != null)
            {
                string file03 = akey.GetValue("Path").ToString();
                if (File.Exists(file03 + "Excel.exe"))
                {
                    ifused += 1;
                }
            }

　　　　　//检查本机是否安装Office2007

if (akey07 != null)
            {
                string file07 = akey.GetValue("Path").ToString();
                if (File.Exists(file07 + "Excel.exe"))
                {
                    ifused += 2;
                }
            }
            //检查本机是否安装wps
            if (akeytwo != null)
            {
                string filewps = akeytwo.GetValue("InstallRoot").ToString();
                if (File.Exists(filewps + @"\office6\et.exe"))
                {
                    ifused += 4;
                }
            }
            return ifused;
        }
        #endregion

#region 将DBF文件放入DataSet
        private DataSet DbfToDs(string my_TablePath, string my_TableName)
        {
            //数据库连接定义
            OleDbConnection my_conn; //数据连接
            OleDbDataAdapter my_Adapter;//数据适配器
            DataSet my_Ds = null;
            ////数据库连接
            try
            {
                string path = my_TablePath.Substring(0, my_TablePath.LastIndexOf("\\")) + "\\";
                string connString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + path + ";Extended Properties=dBASE IV;Persist Security Info=False;";
                string my_StrSelect = "SELECT * FROM " + my_TableName;
                my_conn = new OleDbConnection(connString);
                my_Adapter = new OleDbDataAdapter(my_StrSelect, my_conn);
                my_Ds = new DataSet();