C# 声明下拉选择的数据asp.net vb

您可以在代码隐藏中执行此操作：

  lsCmd = "SELECT * FROM"
            lsCmd &= " (SELECT DISTINCT code, upload, DATEPART(dd, [date]) as Date"
            lsCmd &= " FROM edrsDB..tbl_users"
            lsCmd &= " left join edrsDB..edrs_upload"
            lsCmd &= " ON edrs_upload.userid = tbl_users.userID"
            lsCmd &= " WHERE DATEPART(MM, [date])= " & SQLQUOTE(Trim(ddlMonth.SelectedIndex))
            lsCmd &= " And DATEPART(YYYY, [date])= " & SQLQUOTE(Trim(ddlYear.SelectedIndex))
            lsCmd &= " And date IS NOT NULL) AS monthlyRpt"
            lsCmd &= " PIVOT (MAX(upload)"

或

//按索引选择

DropDownList1.SelectedItem.Text = "January"

DropDownList1.SelectedItem.Text = "January"

DropDownList1.SelectedIndex = 5;