Question

我目前正在尝试写入excel文件。我用这段代码：

    public void UpdateExcelFile(string dir, string sheet, string sql)
    {
        System.Data.OleDb.OleDbConnection MyConnection;
        System.Data.OleDb.OleDbCommand myCommand = new System.Data.OleDb.OleDbCommand();
        MyConnection = new System.Data.OleDb.OleDbConnection(String.Format("provider=Microsoft.Jet.OLEDB.4.0;Data Source='{0}';Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=0;MAXSCANROWS=0\";", dir));
        MyConnection.Open();
        myCommand.Connection = MyConnection;
        myCommand.CommandText = sql;
        myCommand.ExecuteNonQuery();
        MyConnection.Close();

        if (myCommand != null)
        {
            myCommand.Dispose();
            myCommand = null;
        }

        if (MyConnection != null)
            MyConnection.Dispose();
    }

我在条件表达式中得到的数据类型不匹配＆＃34;例外。我的发言如下：

string cmdString = String.Format("Insert into [{0}] (Customer, Location, CalendarWeek, from, till, [agreed at], [agreed with], [{1}]) values('{2}','{3}','{4}','{5}','{6}','{7}','{8}','{9}')"
                    , sheetName, getPackaging.Text, getCustomer.Text, getLocation.Text, getCalWeek, getFirstDayOfCalWeek,
                    getLastDayOfCalWeek, getDateOfAgreement.Value.ToString("dd/MM/yyyy"), getNameForPrice.Text, getPrice.Value.ToString());

所以一切都转换为字符串。在我的Excel文件中，我将每一列都转换为＆＃34;标准＆＃34;。为什么会这样？我甚至将MaxScanRows属性设置为0。

编辑：这是cmdString

Insert into [Sheet1$] (Customer, Location, CalendarWeek, from, till, [agreed at], [agreed with], [10x500]) values('A','City','1','02.01.2016','08.01.2016','05.03.2016','Test','3')

OleDb数据类型在标准表达式中不匹配

0 个答案: