Question

我使用文本框和DGV构建自动提示搜索。一切正常，除此之外我想要2个按钮，提供上下1行的功能。您必须知道，在搜索时，我将那些不包含搜索字符串的行设置为.visible = false。

理论上它应该是这样的：

Private Sub tsbDown_Click(sender As Object, e As EventArgs) Handles tsbDown.Click
    With dgvMA
       If dgvMA.RowCount > 0 Then
            Dim MyDesiredIndex As Integer = GetNextVisibleCell(dgvMA.CurrentRow.Index)

            dgvMA.ClearSelection()
            dgvMA.CurrentCell = dgvMA.Rows(MyDesiredIndex).Cells(1)
            dgvMA.Rows(MyDesiredIndex).Selected = True
        End If
    End With
End Sub

Private Function GetNextVisibleCell(currentrow As Integer) As Integer
    With dgvMA
        For i = currentrow To .Rows.Count - 1
            If .Rows(i).Visible = True Then
                MsgBox(i & ": " & .Rows(i).Visible)
                Return i
                Exit For
            End If
        Next

        Return currentrow
    End With
End Function

但我的行没有被选中。 multi-select设置为false，fullrowselect设置为true。当我手动点击一行或用键盘选择它时，一切都正确打印。

我做错了什么？

Answer 1

这应该有效：

Private Sub tsbDown_Click(sender As Object, e As EventArgs) Handles tsbDown.Click
    With dgvMA
        If dgvMA.RowCount > 0 And dgvMA.CurrentRow.Index + 1 < dgvMA.Rows.Count Then
            Dim MyDesiredIndex As Integer = GetNextVisibleCell(dgvMA.CurrentRow.Index + 1)

            dgvMA.ClearSelection()
            dgvMA.CurrentCell = dgvMA.Rows(MyDesiredIndex).Cells(1)
            dgvMA.Rows(MyDesiredIndex).Selected = True
        End If
    End With
End Sub

Private Sub tsbUp_Click(sender As System.Object, e As System.EventArgs) Handles tsbUp.Click
    With dgvMA
        If dgvMA.RowCount > 0 And dgvMA.CurrentRow.Index <> 0 Then
            Dim MyDesiredIndex As Integer = GetNextVisibleCell(dgvMA.CurrentRow.Index - 1)

            dgvMA.ClearSelection()
            dgvMA.CurrentCell = dgvMA.Rows(MyDesiredIndex).Cells(1)
            dgvMA.Rows(MyDesiredIndex).Selected = True
        End If
    End With
End Sub

Private Function GetNextVisibleCell(currentrow As Integer) As Integer
    Dim i As Integer
    With dgvMA
        For i = currentrow To .Rows.Count - 1
            If .Rows(i).Visible = True Then
                ' MsgBox(i & ": " & .Rows(i).Visible)
                Return i
                Exit For
            End If
        Next

        Return currentrow
    End With
End Function

P.S。我没有检查下一个可见单元格的代码，但看起来没问题，行选择正常

DataGridView选择Row Error

1 个答案: