Description Attr

David Smith

16y2.6k.NET

it blows up at this line when i enter in 00AA or 0x00AA, i guess its not really possible to put a enumeraton out of order


string value = commonFunctions.GetTestName((Dictionary.Common.ValidtTest)Enum.Parse(typeof(Dictionary.Common.ValidTest), "00AA"));

   public enum ValidTest
    {
      [Description("TEST_A")] CAT = 0x0000,
      [Description("TEST_B")] DOG = 0x00AA,
      [Description("TEST_C")] BEAR = 0x0002,
    }

public string GetTestName(Enum eventValue)
    {
      ValidTest vtn = (ValidTest)eventValue;

      // Get the type
      Type type = eventValue.GetType();

      // Get fieldinfo for this type
      FieldInfo fieldInfo = type.GetField(vtn.ToString());

      // Get the stringvalue attributes
      DescriptionAttribute[] attribs = fieldInfo.GetCustomAttributes(
          typeof(DescriptionAttribute), false) as DescriptionAttribute[];


      // Return the first if there was a match.
      return attribs.Length > 0 ? attribs[0].Description : null;
    }

2 Replies

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David Smith16y ago
Thanks bryan, instead I just kept it simple, i was trying to broaden my c sharp vocabulary i did something like this instead
This works perfect
```
commonFunctions.initDictionary();
string value = commonFunctions.ValidAnimalsNames("00AA");
```
public class commonAnimals
{
    static private Dictionary<string, string> ValidAnimalsNames= new Dictionary<string,string>();
    static public void initDictionary()
    {
        ValidAnimalsNames.Add("0000", "CAT");
        ValidAnimalsNames.Add("00AA", "DOG");
        ValidAnimalsNames.Add("0002", "BEAR");
    }

    static public string GetValidAnimalsName(string key)
    {
        string value = string.Empty;

        if (ValidAnimalsNames.ContainsKey(key))
        {
            value =  ValidAnimalsNames[key];
        }

        return value;
    }
}
Bryian Tan16y ago
Hello,

[Description("TEST_A")] CAT = 0x0000, //value is 0
[Description("TEST_B")] DOG = 0x00AA, //value is 170
[Description("TEST_C")] BEAR = 0x0002, //value is 2

Enum.Parse(typeof(Dictionary.Common.ValidTest), "00AA")

The above line is trying to look for the value "00AA" but not found.

Try it with "0170" and it should return "TEST_B"