Disable Sunday Date in Datagridivew using csharp

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C#

Note it is windows application.


I tried the code but it is not working.

My code as follows.

private void Faculty_Available_Calendar_DateChanged(object sender, DateRangeEventArgs e)
{
DGVCalendar.Rows.Clear();
DateTime dt1 = Faculty_Available_Calendar.SelectionStart;
dt1 = new DateTime(dt1.Year, dt1.Month, 1);
DateTime dt2 = dt1.AddMonths(1);
int numDays = (dt2 - dt1).Days;
if (DGVCalendar.RowCount < numDays)
{
DGVCalendar.RowCount = numDays;
}

int row = 0;
while (dt1 < dt2)
{
if (DayOfWeek == DayOfWeek.Sunday)
{
DGVCalendar.Rows[row].Cells[1].Value = false;
}

DGVCalendar.Rows[row].Cells[1].Value = dt1.ToString("dd-MM-yy");
DGVCalendar.Rows[row].Cells[0].Value = true; //All checkbox Checked Defaulty
dt1 = dt1.AddDays(1);
row++;
}

}

In the above i am validating sunday date disable in datagridview.

for that i written the code.

if (DayOfWeek == DayOfWeek.Sunday)
{
DGVCalendar.Rows[row].Cells[1].Value = false;
}


The above code is not working,what is problem in my above code.

when i run shows the error as follows;
System.DayOfWeek' is a 'type' but is used like a variable

what can i do.
please help me.

Regards,
Narasiman P.

Note It is windows application