Question

我无法从我的datagridview中删除记录，因为每次尝试删除记录时都会抛出错误。错误显示“没有给出一个或多个所需参数的值”。这是我的代码：

 Private Sub delete_Click(sender As Object, e As EventArgs) Handles delete.Click
    If Me.DataGridView1.Rows.Count > 0 Then
        If Me.DataGridView1.SelectedRows.Count > 0 Then
            Dim myPrimaryKey As Integer = Me.DataGridView1.SelectedRows(0).Cells("id").Value
            If Not cnn.State = ConnectionState.Open Then
                cnn.Open()
            End If

            Dim cmd As New OleDb.OleDbCommand
            cmd.Connection = cnn
            'cmd.CommandText = "DELETE * FROM attendance " & intemployeeno
            cmd.CommandText = "DELETE FROM VehicleDefects WHERE id=" & myPrimaryKey
            cmd.ExecuteNonQuery()
            Me.refreshdata()
        Else
            MessageBox.Show("Select 1 row before you hit Delete")
            cnn.Close()
        End If
    End If
End Sub

Answer 1

尝试这样

cmd.CommandText = "DELETE FROM VehicleDefects WHERE id='" & myPrimaryKey & "'"

Answer 2

我认为你可能在Me.refreshdata（）

上遇到问题

向我们展示refreshdata（）子程序/功能

的代码

Answer 3

很多时候"no value given for one or more required paramemters".此错误是由于无效的列名称造成的。我建议请检查cmd.CommandText = "DELETE FROM VehicleDefects WHERE id=" & myPrimaryKey行

中的拼写

从Datagridview中删除记录

3 个答案: