I want to select multiple days in my monthView1, but

the error message say.”System.Exception: ‘Days between ViewStart and ViewEnd should be between 1 and MaximumViewDays’“

and here my code.

private void monthView1_SelectionChanged(object sender, EventArgs e)
        {
            calendar1.SetViewRange(monthView1.SelectionStart, monthView1.SelectionEnd);
        }