How to enable DataGridView sorting when user clicks on the column header?

Question

I have a datagridview on my form and I populate it with this:

dataGridView1.DataSource = students.Select(s => new { ID = s.StudentId, RUDE = s.RUDE, Nombr         


        

Answer 1

You don't need to create a binding datasource. If you want to apply sorting for all of your columns, here is a more generic solution of mine;

private int _previousIndex;
private bool _sortDirection;

private void gridView_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
    if (e.ColumnIndex == _previousIndex)
        _sortDirection ^= true; // toggle direction

    gridView.DataSource = SortData(
        (List)gridReview.DataSource, gridReview.Columns[e.ColumnIndex].Name, _sortDirection);

    _previousIndex = e.ColumnIndex;
}

public List SortData(List list, string column, bool ascending)
{
    return ascending ? 
        list.OrderBy(_ => _.GetType().GetProperty(column).GetValue(_)).ToList() :
        list.OrderByDescending(_ => _.GetType().GetProperty(column).GetValue(_)).ToList();
}

Make sure you subscribe your data grid to the event ColumnHeaderMouseClick. When the user clicks on the column it will sort by descending. If the same column header is clicked again, sorting will be applied by ascending.