小编典典

C#中的OleDbConnection源变量

sql

如何D:\temp\test.xlsfilePathinOleDbConnection语句替换。

我可以获取确切的filePath(使用OpenFileDialog,然后可以方便地定位.xls文件,而无需再进行硬编码了),但是当我将变量插入filePath为Style2时,它将不起作用。我怎样才能解决这个问题?谢谢。

样式1

OleDbConnection dbConnection = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\temp\test.xls;Extended Properties=""Excel 8.0;HDR=Yes;""");

样式2

OleDbConnection dbConnection = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=filePath;Extended Properties=""Excel 8.0;HDR=Yes;""");

[更新]我的部分代码是这样的,

DataTable fooData = new DataTable();

            OleDbConnection dbConnection = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=filePath;Extended Properties=""Excel 8.0;HDR=Yes;""");

            dbConnection.Open ();
            try
            {
                OleDbCommand dbCommand = new OleDbCommand("SELECT * FROM [maleSheet$]", dbConnection);
                OleDbDataReader dbReader = dbCommand.ExecuteReader();

                int RankIndex = dbReader.GetOrdinal("Rank");

                while (dbReader.Read())
                {
                    string rank = dbReader.GetValue(RankIndex).ToString();
                    ////....
                }
           }

错误如下 OleDbDataReader dbReader = dbCommand.ExecuteReader();

System.Data.dll中发生了类型为’System.Data.OleDb.OleDbException’的未处理异常


阅读 237

收藏
2021-05-16

共1个答案

小编典典

OleDbConnection dbConnection = new OleDbConnection( String.Format( @”Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0};Extended Properties=”“Excel 8.0;HDR=Yes;”“”, filePath ) );

2021-05-16