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c#.netenumsenum-flags

Flags enum in .NET

I am trying to use a set of conditional statements that will set up an enumeration attributed with [Flags]. However, the compiler complains that 'm' is unassigned. How can I rewrite the following to achieve my intended functionality?

Media m;
if (filterOptions.ShowAudioFiles)
    m = m | Media.Audio;
if (filterOptions.ShowDocumentFiles)
    m = m | Media.Document;
if (filterOptions.ShowImageFiles)
    m = m | Media.Image;
if (filterOptions.ShowVideoFiles)
    m = m | Media.Video;
Solution

  • You need to initialize m. Create a "None" flag that has value 0 then:

    Media m = Media.None;

    Then the rest of your code.