Convert object to type

Question

User-284642143 posted

I have two controls, a radiobuttonList and CheckboxList. I would like to retrieve the items selected within these controls.

 	private void ItemsInList(object c)
        {
            if (c == typeof(RadioButtonList))
            {
 
            }
            else if (c == typeof(CheckBoxList))
            {

            }

            foreach (ListItem li in c.Items)
            {

            }
        }

What i'm trying to do is pass in a control (c) and then determine if its a RBL or CBL (if i need to that is) and then iterate through the list and take some action.

At present i have the above code but receive the error

'object' does not contain a definition for 'Items' and no extension method 'Items' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?

Im not entirely sure if this is possible or if im doing something wrong?

Answer 1

User753101303 posted

Hi,

According to the doc both RadioButtonList and CheckBoxList are inheriting from the ListControl class which provides the Items property so try :

private void ItemsInList(ListControl c)

Edit: in short you should work against the more general type that provides what your code actually use

Answer 2

User-284642143 posted

Thanks, been reading on Generics recently and over thought this too much.