Description Attribute

Question

lolol a lil complicated for me what if i do something like this, Im having a lil trouble with it, can you tell me what im doing wrong

public enum ValidAnimals
    {
      [Description("BEAR")] A = 0x0000,     //is there a way to get the description base off of the 0x0000
      [Description("DOG ")] B = 0x0001,
      [Description("CAT ")] C = 0x0002,
    }

    public string GetName(string Value)
    {Value ="0000";
      FieldInfo fi = stringValue.GetType().GetField(Value);
      DescriptionAttribute[] attributes = (DescriptionAttribute[])fi.GetCustomAttributes(typeof(DescriptionAttribute), false);
      return (attributes.Length > 0) ? attributes[0].Description : stringValue;
    }

im basically get a 4 nibble string, and I want to do a look up via the above enum, so like "0000" means Bear, Bear is the value i want to get back

Felipe Ramos · Answer

Remember you want to get the description from the enum so that is what you are going to pass in. public static string GetName(ValidAnimals value) { // Get the type Type type = value.GetType(); // Get fieldinfo for this type FieldInfo fieldInfo = type.GetField(value.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; }

Muralidharan Deenathayalan · Answer

Please check the link. http://msmvps.com/blogs/deborahk/archive/2009/07/10/enum-binding-to-the-description-attribute.aspx public enum CustomerTypeOption { [DescriptionAttribute(Not Specified)] NotDefined [DescriptionAttribute(Corporation)] Corp [DescriptionAttribute(Individual or Family)] IndividualorFamily [DescriptionAttribute(School or University)] SchoolorUniversity [DescriptionAttribute(Charity)] Charity } Dictionary CustomerTypeList = new Dictionary (); FieldInfo fi; DescriptionAttribute da; foreach (Customer.CustomerTypeOption enumValue in Enum.GetValues(typeof(Customer.CustomerTypeOption))) { fi = typeof(Customer.CustomerTypeOption). GetField((enumValue.ToString())); da = (DescriptionAttribute)Attribute.GetCustomAttribute(fi typeof(DescriptionAttribute)); if (da != null) { CustomerTypeList.Add(da.Description (int)enumValue); } } // Bind the customer type combo box CustomerTypeComboBox.DisplayMember = Key; CustomerTypeComboBox.ValueMember = Value; CustomerTypeComboBox.DataSource = new BindingSource(CustomerTypeList null);

David Smith · Answer

Ok now im having a issue public enum ValidAnimals { [Description(BEAR)] A = 0x0000  [Description(DOG )] B = 0x0026  [Description(CAT )] C = 0x0002 } string value = commonFunctions.GetTestName(( ValidAnimals )Enum.Parse(typeof( ValidAnimals ) 0026 )); public string GetTestName(Enum eventValue) { ValidTestNames vtn = (ValidTestNames)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[]; /////////// it fails right at this line // Return the first if there was a match. return attribs.Length > 0 ? attribs[0].Description : null; }

David Smith · Answer

Thanks I fix I had to the ValidAnimals.Parse situation to get it to work because im using the enum as a lookup