对于出现如题的错误，本人的另一篇博文已经指出原因，那么怎样才能自动获得Excel中各个sheet的名称呢？这样就能动态的选中返回那个sheet的数据，即使用户更改了名称也不怕，完全可以把所有sheet的名称列出来供用户选择。下面就把解决问题的代码列出来，主要用到了OleDbConnection.GetOleDbSchemaTable()方法。

         ///
         /// 执行导入
         ///
         /// Excel文件名
         /// DataSet
         public static DataSet doImport(string strFileName)
         {
             if (strFileName == "")
                 return null;
             else
             {
                 DataSet ExcelDs = new DataSet();
                 try
                 {
                     //Excel数据库连接串
                     strConn = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source = '" + strFileName + "';Extended Properties ='Excel 8.0;HDR=NO;IMEX=1'";
                     OleDbConnection OleDB = new OleDbConnection(strConn);//打开数据源连接
                     OleDB.Open();//打开连接
                     //返回Excel的架构，包括各个sheet表的名称，类型，创建时间和修改时间等
                     System.Data.DataTable dtSheetName = OleDB.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "Table" });
                     //声明包含excel中表名的字符串数组
                     string[] strTableNames = new string[dtSheetName.Rows.Count];
                     //将表名存入数组中
                     for (int k = 0; k < dtSheetName.Rows.Count; k++)
                     {
                         strTableNames[k] = dtSheetName.Rows[k]["TABLE_NAME"].ToString();
                     }
                     //从指定的表名查询数据
                     string strSheet = "select * from [" + strTableNames[0] + "]";
                     OleDbDataAdapter ExcelDA = new OleDbDataAdapter(strSheet, OleDB);//连接数据库
                     ExcelDA.Fill(ExcelDs, "ExcelInfo");
                 }
                 catch (Exception err)
                 {
                     MessageBox.Show(err.Message.Tostring(), "错误提示");
                 }
                 return ExcelDs;
             }