DataGridView dgv = new DataGridView(); dgv.AllowUserToAddRows = false; dgv.ColumnCount = 5; dgv.Rows.Add(new DataGridViewRow()); dgv.Rows.Add(new DataGridViewRow()); System.Diagnostics.Trace.WriteLine("Count" + dgv.Rows.Count.ToString()); dgv.Rows.Clear(); System.Diagnostics.Trace.WriteLine("Count" + dgv.Rows.Count.ToString());?