(C#) How can I convert my Enum to a dictionary getting the VALUE as the attribute and the KEY as the char(value of the enum)?

Question

coders,

It's my first question here. So if it lacks of some stackoverflow pattern, pardon me, i'll edit it as you claim.

All I need: Convert my enums to a collection(the one I've came out to use was the dictionary) but ignoring the enum main value itself... I just want the attribute(as XmlEnum) and the CHAR value. So I can populate my drop down list and be happy.

Whatever code:

// whatever.aspx
<asp:DropDownList ID="ddlGreekTeam" runat="server" ... whatever />
<asp:DropDownList ID="ddlMilitaryTeam" runat="server" ... whatever />

// whatever.aspx.cs
private void OnPageLoad()
{
    PopulateTeamDropDownLists<GreekTeam>(ddlGreekTeam)
    PopulateTeamDropDownLists<MilitaryTeam>(ddlMilitaryTeam)
    // ... whatever
}
private void PopulateTeamDropDownLists<TEnum>(DropDownList ddl)
{
    ddl.Items.Clear();
    ddl.Items.Insert(0, new ListItem("All", null));

    foreach(var team in ListTeams<TEnum>())
        ddl.Items.Add(new ListItem(team.Value.ToString(), team.Key));
}

// method needed
public IDictionary<string, char> ListTeams<TEnum>()
{
    // TODO: the magic I'm looking for...
}

// enums
public enum GreekTeam
{
    [XmlEnum("Alpha Team")]
    Alpha = 'A',
    [XmlEnum("Beta Team")]
    Beta = 'B',
    [XmlEnum("Chi Team")]
    Gamma = 'G',
    // ... whatever
}

public enum MilitaryTeam
{
    [XmlEnum("Alpha Team")]
    Alpha = 'A',
    [XmlEnum("Bravo Team")]
    Bravo = 'B',
    [XmlEnum("Charlie Team")]
    Charlie = 'C',
    // ... whatever
}

OUTPUT:

<select>
  <option value="A">Alpha Team</option>
  <option value="B">Beta Team</option>
  <option value="G">Gamma Team</option>
  ...
</select>
<select>
  <option value="A">Alpha</option>
  <option value="B">Bravo Team</option>
  <option value="C">Charlie Team</option>
  ...
</select>

Possible duplicate of [Getting attributes of Enum's value](http://stackoverflow.com/questions/1799370/getting-attributes-of-enums-value) — aybe, Oct 20 '16 at 22:26

score 0 · Accepted Answer · answered Oct 20 '16 at 22:33

Long time ago I created this:

public class EnumUtils
{

    public static string GetEnumDescription(object en)
    {
        Type type = en.GetType();
        MemberInfo[] memInfo = type.GetMember(en.ToString());
        if (memInfo != null && memInfo.Length > 0)
        {
            object[] attrs = memInfo[0].GetCustomAttributes(typeof(EnumDescription), false);
            if (attrs != null && attrs.Length > 0)
                return ((EnumDescription)attrs[0]).Text;
        }
        return en.ToString();
    }
    public static List<EnumObject> GetAllValuesFromEnum<T>()
    {
        List<EnumObject> AllValue = new List<EnumObject>();
        foreach (Enum enm in Enum.GetValues(typeof(T)))
        {
            AllValue.Add(new EnumObject(GetEnumDescription(enm), enm));
        }
        return AllValue;

    }
    public static Enum GetEnumValue<T>(string sEnumValue)
    {
        //List<EnumObject> allobject = GetAllValuesFromEnum<T>();
        foreach (Enum enm in Enum.GetValues(typeof(T)))
        {
            if (enm.ToString() == sEnumValue)
                return enm;
        }
        return null;
    }
    public static Object GetEnumValueFromDescription<T>(string sEnumDescription) //where T: Enum 
    {
        List<EnumObject> allobject = GetAllValuesFromEnum<T>();
        foreach (EnumObject item in allobject)
        {
            if (item.EnumDisplay == sEnumDescription)
                return item.EnumValue;
        }
        return default(T) as Enum;
    }

}

public class EnumObject
{
    private string _EnumDisplay;
    private Enum _EnumValue;

    public EnumObject(string enumDisplay, Enum enumValue)
    {
        _EnumDisplay = enumDisplay;
        _EnumValue = enumValue;
    }
    public string EnumDisplay
    {
        get
        {
            return _EnumDisplay;
        }
        set
        {
            _EnumDisplay = value;
        }
    }

    public Enum EnumValue
    {
        get { return _EnumValue; }
        set { _EnumValue = value; }
    }
}
public class EnumDescription : Attribute
{
    public string Text;
    public EnumDescription(string text)
    { Text = text; }
}

You can use GetAllValuesFromEnum to get all attribute values, just change the attribute type typeof(EnumDescription) in the code

(C#) How can I convert my Enum to a dictionary getting the VALUE as the attribute and the KEY as the char(value of the enum)?

1 Answers1