Switch case on Enum values

Question

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switch (transactionRecieved)
{
   case TransactionType.TransactionName.ToString():
   break;
   case TransactionType.TransactionName1.ToString():
   break;
}

I am not using anything new. This is the general scenario and we use it all time like this for enum

TransactionType is a enum

I also went through this post not found it useful.SO Post

I need to use enum in swith statement and I am not able to use it. could anyone help me on that part

Your case values are not const, so you are indeed trying to use a new feature. — Matthew Watson, Sep 11 '19 at 07:44
That code is not using enums, it switches on strings. Deleting .ToString() is probably the way to get ahead. — Hans Passant, Sep 11 '19 at 08:17

Caius Jard · Accepted Answer · 2019-09-11T07:55:44.637

4

If you're asking "why doesn't this work"? I'm not sure you do use it all the time like that because case expects a constant value:

Parse your string transactionRecieved to a TransactionType enum with Enum.Parse or Enum.TryParse<T> and then remove the ToString() from your case, perhaps like:

    var x = "Whatever";
    if(Enum.TryParse<TransactionType>(x, out xEnum)){
      switch(xEnum){
        case TransactionType.Whatever:
          break;
      }
    }

Notes: * xEnum is in scope within the if

Enum.IsDefined can be used in conjunction with Enum.Parse (but I find tryparse neater)

edited Sep 11 '19 at 07:55

answered Sep 11 '19 at 07:44

Caius Jard

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yes you are right Caius. I was doing it wrong. Thank you for the help – Ameya Deshpande Sep 11 '19 at 09:52

Switch case on Enum values

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