WPF: Detect row validation errors in C# code

Question

I want to achieve a pretty simple task, but none of the solutions here on SO or otherwise found have helped me so far:

I have a WPF DataGrid, which is b

Answer 1

OK, I've worked it out. The following does what I want:

public static DataGridRow GetRow(DataGrid grid, int index)
{
    DataGridRow row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    if (row == null)
    {
        // May be virtualized, bring into view and try again.
        grid.UpdateLayout();
        grid.ScrollIntoView(grid.Items[index]);
        row = (DataGridRow)grid.ItemContainerGenerator.ContainerFromIndex(index);
    }
    return row;
}

In the code for my "OK" button I do:

for (int i = 0; i < dgvData.Items.Count; i++)
{
    DataGridRow row = GetRow(dgvData, i);
    if (row != null && Validation.GetHasError(row))
    {
        hasDataGridErrors = true;
        break;
    }
}