.net – DataGridView: how to focus the whole row instead of a single cell

datagridviewnetwinforms

I'd like to use the DataGridView control as a list with columns. Sort of like ListView in Details mode but I want to keep the DataGridView flexibility.

ListView (with Details view and FullRowSelect enabled) highlights the whole line and shows the focus mark around the whole line:
selected row in ListView control

DataGridView (with SelectionMode = FullRowSelect) displays focus mark only around a single cell:
selected row in DataGridView

So, does anyone know of some (ideally) easy way to make the DataGridView row selection look like the ListView one?
I'm not looking for a changed behaviour of the control – I only want it to look the same.
Ideally, without messing up with the methods that do the actual painting.

Best Answer

Put this code either into your form's constructor or set it in datagridview's Properties using the IDE.

dgv.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
dgv.MultiSelect = false;
dgv.RowPrePaint +=new DataGridViewRowPrePaintEventHandler(dgv_RowPrePaint);

Then paste the following event into the form code:

private void dgv_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
    e.PaintParts &= ~DataGridViewPaintParts.Focus;
}

And it works! :-)

"dgv" is the DataGridView in question and "form" is the Form that contains it.

Note, that this soulution doesn't display the dotted rectangle around the whole row. Instead, it removes the focus dots entirely.

Related Solutions

.net – How to highlight the current cell in a DataGridView when SelectionMode=FullRowSelect

I figured out a better way of doing this, using the CellFormatting event:

Private Sub uxContacts_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles uxContacts.CellFormatting
    If uxContacts.CurrentCell IsNot Nothing Then
        If e.RowIndex = uxContacts.CurrentCell.RowIndex And e.ColumnIndex = uxContacts.CurrentCell.ColumnIndex Then
            e.CellStyle.SelectionBackColor = Color.SteelBlue
        Else
            e.CellStyle.SelectionBackColor = uxContacts.DefaultCellStyle.SelectionBackColor
        End If
    End If
End Sub

.net – Horrible redraw performance of the DataGridView on one of the two screens

You just need to make a custom class based off of DataGridView so you can enable its DoubleBuffering. That's it!


class CustomDataGridView: DataGridView
{
    public CustomDataGridView()
    {
        DoubleBuffered = true;
    } 
}

As long as all of my instances of the grid are using this custom version, all is well. If I ever run into a situation caused by this where I'm not able to use the subclass solution (if I don't have the code), I suppose I could try to inject that control onto the form :) (although I'll be more likely to try using reflection to force the DoubleBuffered property on from the outside to once again avoid the dependency).

It is sad that such a trivially simple thing ate up so much of my time...

Note: Making the answer an answer so the question can be marked as answered

Best Answer

Related Solutions

.net – How to highlight the current cell in a DataGridView when SelectionMode=FullRowSelect

.net – Horrible redraw performance of the DataGridView on one of the two screens

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