casting a combobox selection to char

Question

I have a Combobox named CB_x defined in WPF and I have selections 05101520. What method can I use to achieve the following (which doesn't work)? char x; x = (char)CB_x.SelectionBoxItem; // item selected is a string 20 I need a char 20. It compiles but gives a casting error. Is there to atoi() method somewhere?

Vulpes · Answer

On second thoughts if you can figure out the index of the SelectionBoxItem you should be able to change it from the Items collection. Off the top of my head I'm not sure of the code but I'd try: int x = (int)GlobalVars.User_Parameters.alarm_holdoff; CBAlarmHoldoff.Items[CBAlarmHoldoff.SelectedIndex] = x.ToString();

Vulpes · Answer

I'm sure that this code works because you can confirm it with a MessageBox.Show: char x = (char)20; int i = (int)x; MessageBox.Show(i.ToString()); // 20 However I'd overlooked that the ComboBox.SelectionBoxItem property was read-only. All I can suggest there is that you change that particular item in the original datasource and then rebind the combobox to that datasource.

Sutton Mehaffey · Answer

It also is giving the message that SelectionBoxItem is read only.

Sutton Mehaffey · Answer

It doesn't like the ToString. int x; x = (int)GlobalVars.User_Parameters.alarm_holdoff; // alarm_holdoff is a char CBAlarmHoldoff.SelectionBoxItem = x.ToString; I was trying to do it this way too. CBAlarmHoldoff.SelectionBoxItem = (int)GlobalVars.User_Parameters.alarm_holdoff.ToString();

Vulpes · Answer

That would be: char x = (char)20; int i = (int)x; CB_x.SelectionBoxItem = i.ToString();

Sutton Mehaffey · Answer

That worked. Now how do I go the other way. When I read a char 20 from a file how can I read that into the ComboBox? x = 20; CB_x.SelectionBoxItem = x.ToString(); // doesn't work

Vulpes · Answer

Try: char x = (char)int.Parse(CB_x.SelectionBoxItem.ToString()); This should give you the char with an ASCII value of 20 which of course is the non-printing character DC4.