How to empty a datagridview?

Question

I don't know what is the syntax for emptying a datagridview. Please help me here is my code.

if (cboProduct.SelectedIndex != -1)
    load_variant();
else
    //empty the datagridview
    cboProduct.SelectedIndex = -1;

Answer 1

set datasource as null

dataGridView1.DataSource = null;

Or

dataGridView1.Rows.Clear()

OR

while (dataGridView1.Rows.Count > 0)
{
    dataGridView1.Rows.RemoveAt(0);
}