System.Data.OleDb.OleDbException”类型的异常在 System.Data.dll 中发生 其他信息: 找不到可安装的 ISAM。

 private String getConnString()
        {
            String connectionString = String.Empty;
            if (excelFilePath != null)
            {
                //Excel版本不一样，连接字符串不一样
                if (excelFilePath.EndsWith(".xls"))
                {//Excel2003
                    connectionString = "Provider = Microsoft.Jet.OLEDB.4.0; Data Source =" + excelFilePath + "; Extended Properties=Excel 8.0";
                }
            else
                {//Excel2007 up
                    connectionString = "Provider = Microsoft.ACE.OLEDB.12.0; Data Source=" + excelFilePath + "; Extended Properties=Excel 12.0";
                }
            }
            return connectionString;
        }