IValueConverter removing underlying value of enum(int)

Question

I'm passing an Enum with underlying value (int) as a parameter from XAML to an IValueConverter. The idea is to use the Enum value to iterate against a list to check if the value exists & return a Visibility enum. The list is of type int. But when passing the Enum to the converter, I cannot cast the Enum back to an int. Peering into the parameter with 'Quick Watch', I cannot see the underlying value or any value at all.

Enum e.g.

public class Operations
{
    public enum Reporting
    {
        ReportAccounts    = 101,
        ReportEngineering = 102,
        ReportSoftware    = 103,
        ReportPR          = 104,
        ReportCRM         = 105
     }
     public enum Editing
     {
        EditUser   = 201,
        EditAccess = 202,
        EditView   = 203
     }
 }

XAML e.g.

Visibility={Binding Converter={StaticResource VisibilityConverter}, 
        ConverterParameter={x:Static Operations:Reporting.ReportAccounts}}

IValueConverter e.g.

public object Convert(object value, Type targetType, object parameter, 
                      System.Globalization.CultureInfo culture)
{
     bool visibility = OperationList.Exists(list => list.Id == (int)parameter);
     if (visibility == true)
     {
         return Visibility.Visible;
     }
     else
     {
         return Visibility.Collapsed;
     }
 }

I would like to know if there is any way of retaining or retrieving the underlying value of an enum when it is passed to an IValueConverter.

You say you are peering into *value*, but you pass the enum value as the `ConverterParameter`. Have you tried peering into `parameter` instead? — O. R. Mapper, Apr 07 '13 at 16:40
Please format your source code properly. That formatting had already been done - not only in your code samples, but also in your message text - by a fellow SO user, but you just undid those changes and thereby made your question considerably less readable. — O. R. Mapper, Apr 07 '13 at 16:52
is there a way to recall this post? I haven't really formatted the question? this is my first post. — SAm, Apr 07 '13 at 16:54
Yes, see under your quesiton, where it says "edited ..." - that's a link that brings you to the editing history of your question :-) You can see diffs for each editing operation done so far. — O. R. Mapper, Apr 07 '13 at 16:54
Found an earlier question that is related: http://stackoverflow.com/questions/4942501/using-enum-in-converterparameter — SAm, May 13 '13 at 05:31

score 2 · Accepted Answer · answered Apr 07 '13 at 16:39

2

You might have to cast the parameter to the enum-type Reporting first:

int val = System.Convert.ToInt32((Reporting)parameter);
bool visibility = OperationList.Exists(list => list.Id == val);

answered Apr 07 '13 at 16:39

Florian Gl

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IValueConverter removing underlying value of enum(int)

1 Answers1