How do you automatically resize columns in a DataGridView control AND allow the user to resize the columns on that same grid?

Question

I am populating a DataGridView control on a Windows Form (C# 2.0 not WPF).

My goal is to display a grid that neatly fills all available width with cells - i.e. no un

Answer 1

A little improvement from Schnapple's version

int nLastColumn = dgv.Columns.Count - 1;
for (int i = 0; i < dgv.Columns.Count; i++)
{
    if (nLastColumn == i)
    {
        dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
    }
    else
    {
        dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
    }
}

for (int i = 0; i < dgv.Columns.Count; i++)
{
    int colw = dgv.Columns[i].Width;
    dgv.Columns[i].AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
    dgv.Columns[i].Width = colw;
}