[C#]读取不同版本的excel文件的方法

--------------------------------2007及以上的版本--------------------------------

测试如下：

        //DataInterface.Method
        /// <summary>
        /// 读取2007版本excel
        /// </summary>
        /// <param name="filePath">文件路径</param>
        /// <returns>返回一个表</returns>
        public System.Data.DataTable GetExcel2007(string filePath)
        {
            try
            {
                string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties="Excel 12.0;HDR=NO;IMEX =1"";

                OleDbConnection conn = new OleDbConnection(strConn);
                conn.Open();
                System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
                //获取Excel文件中第一个（按字母排序的）sheet页的页名。
                string tableName = schemaTable.Rows[0][2].ToString().Trim();

                string strExcel = "SELECT  * FROM [" + tableName + "]";
                OleDbDataAdapter myCommand = null;
                myCommand = new OleDbDataAdapter(strExcel, strConn);
                DataSet ds = new DataSet();
                myCommand.Fill(ds, "dtSource");
                System.Data.DataTable table = ds.Tables["dtSource"];
                conn.Close();
                return table;
            }
            catch
            {
                return null;
            }
        }

--------------------------------2007以下的版本--------------------------------

测试如下：

/// <summary>
        /// 读取2003版本excel
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public System.Data.DataTable GetExcel2003(string filePath)
        {
            //读取OMR结果文件(xls)数据
            try
            {
        //由于windows系统的更新，无法正常使用此strConn
        //如果继续想用请对系统更新的补丁卸载即可
                //string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + xlsPath + 

";Extended Properties="Excel 8.0;HDR=YES;IMEX=1"";
        //也可以使用以下strConn
                string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + 

";Extended Properties="Excel 8.0;HDR=NO;IMEX=1"";
                OleDbConnection conn = new OleDbConnection(strConn);
                conn.Open();
                System.Data.DataTable schemaTable = conn.GetOleDbSchemaTable

(System.Data.OleDb.OleDbSchemaGuid.Tables, null);
                //获取Excel文件中第一个(按字母排序的)sheet页的页名。
                string tableName = schemaTable.Rows[0][2].ToString().Trim();

                string strExcel = "SELECT  * FROM [" + tableName + "]";
                OleDbDataAdapter myCommand = null;
                myCommand = new OleDbDataAdapter(strExcel, strConn);
                DataSet ds = new DataSet();
                myCommand.Fill(ds, "dtSource");
                System.Data.DataTable table = ds.Tables["dtSource"];
                conn.Close();
                return table;
            }
            catch
            {
                return null;
            }
        }