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c#winformsdatagridviewscrollvirtualmode
Michael Buen
Michael Buen

Reputation: 39463

How to change the row position of virtual mode DataGridView?

How to change the row position of virtual mode DataGridView?

I am using Windows Forms.

Upvotes: 1

Views: 5672

Answers (5)

abc
abc

Reputation: 

Private Sub GridSaleItem_SelectionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridSaleItem.SelectionChanged
    Dim rowcount As Integer
    rowcount = GridSaleItem.Rows.Count
    For i As Integer = 1 To rowcount
        If i = 1 Then
            '
        Else
            If i = rowcount Then
                Me.GridSaleItem.CurrentCell = Me.GridSaleItem.Rows(i - 1).Cells(0)
                Me.GridSaleItem.Rows(i - 1).Selected = True
            End If
        End If
    Next

End Sub

Upvotes: 0

sudhir goyal
sudhir goyal

Reputation: 1

Else
        If i = rowcount Then
            Me.GridSaleItem.CurrentCell = Me.GridSaleItem.Rows(i - 1).Cells(0)
            Me.GridSaleItem.Rows(i - 1).Selected = True
        End If
    End If
Next

Upvotes: 0

Dav
Dav

Reputation: 1102

You seem to require not only setting the selected row, but also the displayed row. You can access the latter with the FirstDisplayedScrollingRowIndex property on your DataGridView. One of the useful setups: 

int lastShown = FirstDisplayedScrollingRowIndex + DisplayedRowCount(false) - 2;

if (lastShown < yourIndex)
  FirstDisplayedScrollingRowIndex += yourIndex - lastShown;
else if (FirstDisplayedScrollingRowIndex > yourIndex)
  FirstDisplayedScrollingRowIndex = yourIndex;

will make sure your newly selected row does not disappear off the screen when scrolling up/down programmatically.

Upvotes: 0

codeConcussion
codeConcussion

Reputation: 12938

Marcus's answer is correct, but you may also need to set the DataGridView's current cell property...

dgv.CurrentCell = dgv.Rows[0].Cells[0];

I believe this will scroll the grid. Also, to be absolutely safe, you may want to add this before the other line of code...

dgv.CurrentCell = null;

This will ensure that if the row you want is already the active row but just scrolled out of view, it will scroll it back into view.

Upvotes: 2

Marcus Erickson
Marcus Erickson

Reputation: 1561

You have to clear the old position and set a new one

The collection dataGridView1.SelectedRows has the current selected Rows. Depending on the MultiSelect property of the grid you may have to loop through all the rows in the SelectedRows and mark them as unselected. If you are single selection mode, just setting the new row as selected should clear the old selection.

To select a particular row (in this case the one at index 0) you just add the line dataGridView1.Rows[0].Selected = true;

Upvotes: 3

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