Single click edit in WPF DataGrid

Question

I want the user to be able to put the cell into editing mode and highlight the row the cell is contained in with a single click. By default, this is double click.

H

Answer 1

The answer from Micael Bergeron was a good start for me to find a solution thats working for me. To allow single-click editing also for Cells in the same row thats already in edit mode i had to adjust it a bit. Using SelectionUnit Cell was no option for me.

Instead of using the DataGridCell.Selected Event which is only fired for the first time a row's cell is clicked, i used the DataGridCell.GotFocus Event.

If you do so you will have always the correct cell focused and in edit mode, but no control in the cell will be focused, this i solved like this

private void DataGrid_CellGotFocus(object sender, RoutedEventArgs e)
{
    // Lookup for the source to be DataGridCell
    if (e.OriginalSource.GetType() == typeof(DataGridCell))
    {
        // Starts the Edit on the row;
        DataGrid grd = (DataGrid)sender;
        grd.BeginEdit(e);

        Control control = GetFirstChildByType(e.OriginalSource as DataGridCell);
        if (control != null)
        {
            control.Focus();
        }
    }
}

private T GetFirstChildByType(DependencyObject prop) where T : DependencyObject
{
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(prop); i++)
    {
        DependencyObject child = VisualTreeHelper.GetChild((prop), i) as DependencyObject;
        if (child == null)
            continue;

        T castedProp = child as T;
        if (castedProp != null)
            return castedProp;

        castedProp = GetFirstChildByType(child);

        if (castedProp != null)
            return castedProp;
    }
    return null;
}