表格 Excel 中的一个或多个必需参数没有给出值

Question

当我想在 C# 应用程序中导入工作表 excel 时出现错误，

ERROR 是“没有为一个或多个必需参数指定值”。

我将 c# 与 MS excel 一起使用。这是我的代码

 OpenFileDialog openFileDialog1 = new OpenFileDialog(); 
        openFileDialog1.FileName = "";
        openFileDialog1.Filter = "Excel File Sheet |*.xls; *.xlsx";
        try
        {
            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {

                string path = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + openFileDialog1.FileName +   ";Extended Properties=\"Excel 8.0;HDR=Yes;\";";
                OleDbConnection conn = new OleDbConnection(path);
                OleDbDataAdapter da = new OleDbDataAdapter("SELECT Date, PF, [Agent Name], TL, Supervisor, [Sum Under], [Sum Over], [Out of Adherence], Sch, Sum([Out of Adherence %]*100), Sum((100-(100*[Out of Adherence %]))) AS [Adherence % Daily] FROM [Sheet1$] GROUP BY Date, PF, [Agent Name], TL, Supervisor, [Sum Under], [Sum Over], [Out of Adherence], Sch, [Out of Adherence %]", conn);
                DataTable dt = new DataTable();
                da.Fill(dt);
                dataGridView1.DataSource = dt;


            }
        else
                return;

        }
        catch(FieldAccessException ex)
        {
            MessageBox.Show("ERROR" + ex);
        }

请帮我解决这个错误，

谢谢大家..

Answer 1

此错误通常是指您的 select 语句中缺少或拼写错误的值。

仔细检查所有列名。