radiobutton checked validation throws an error

Question

I'm having some trouble with radio button validation in a wpf application, the radiobutton.checked function it throws an error. the 2 radio buttons are name TSBtn and DSBtn . the error that I get when I try and build the application is'

Error 2 The event 'System.Windows.Controls.Primitives.ToggleButton.Checked' can only appear on the left hand side of += or -= 115 23 MainServerWIndow

im not sure why this is happening the code I have Writen is bellow'

        private void Bill_Click(object sender, RoutedEventArgs e)
    {
        if (TSBtn.Checked)
        {
            StringBuilder itm = new StringBuilder();
            foreach (object selectedItem in yourOrder.Items)
            {
                 itm.AppendLine(selectedItem.ToString());
            }
            MessageBox.Show("The server is " + serversname.SelectedItem + "\n" + "The table number is " + int.Parse(TableNumber.Text) + "\n" + itm);
        }
        else if (DSBtn.Checked)
        {
            yourOrder.Items.Add("The driver is " + DriverName.SelectedItem);
            yourOrder.Items.Add("Delivery Address " + DeliveryAddress.Text);
        }
    }

does anyone have any ideas as to why this is happening? thanks.

Answer 1

Your answer lies in the error message.

The event 'System.Windows.Controls.Primitives.ToggleButton.Checked' ...

Checked is an event, not a property.

What you want is the IsChecked property.

Answer 2

Checked is an Event. You should be testing the checked property which is IsChecked .

So your code should read:

if (TSBtn.IsChecked)
...

and

else if (DSBtn.IsChecked)
...

Answer 3

I've found this question solved at:

stackoverflow.com

if (radLot.IsChecked == true)
{
    SymbolSpecification = "LotRenderer";
}