CODEWITHSUNDEEP
c#
Tes Nov
Tes Nov

Reputation: 93

Is It possible to take one enum list and convert it to another?

I would like to take provided enum list and convert it to mine list. I am getting a list from a service Type and then I would like to convert it to mine FieldTyp via DocumentFieldTypeConverter()

However, this dent work because enum is not valid at this point dic.Add(i, Enum.GetName(rgl, FieldType));I am trying this for the first time so apologies if this is complete nonsense. Prior to this I have used just switch control but I thought there could be something better

class Program {
  static void Main(string[] args) {
    var x = new Type().DocumentFieldTypeConverter();
    foreach(var kvp in x) {
      Console.WriteLine($ "{kvp.Key}:   {kvp.Value}");
    }

    Console.ReadLine();
  }
}

public static class EnumExtension {
  public static Dictionary < int,
  FieldType > DocumentFieldTypeConverter(this Type rglFieldType) {
    var dic = new Dictionary < int,
    FieldType > ();
    var rgl = type.GetType();
    foreach(int i in Enum.GetValues(rgl)) {
      dic.Add(i, Enum.GetName(rgl, FieldType));
    }

    return dic;

  }
}

public enum FieldType {
  Document_Class_Code,
  Document,
  Document_Number,
  DocumentType,
  Passport_Number,
  Invitation_Number,
}

public enum Type {
  Document_Class_Code,
  Document,
  Document_Number,
  DocumentType,
  Passport_Number,
  Invitation_Number,

}

Upvotes: 1

Views: 84

Answers (2)

Nikhil Patil
Nikhil Patil

Reputation: 2540

Use below generic function to convert enums -

public static class EnumExtension
{
    public static Dictionary<int, TDestinationType> EnumTypeConverter<TSourceType, TDestinationType>() 
        where TSourceType : struct, IConvertible
        where TDestinationType : struct, IConvertible
    {
        var dictionary = new Dictionary<int, TDestinationType>();
        var sourceEnum = typeof(TSourceType);
        var sourceValues = Enum.GetValues(sourceEnum);
        foreach (int enumVal in sourceValues)
        {
            var enumString = enumVal.ToString();
            var destinationEnum = Enum.Parse(typeof(TDestinationType), enumString);
            dictionary.Add(enumVal, (TDestinationType)destinationEnum);
        }

        return dictionary;
    }
}

Call this from main as -

    public static void Main(string[] args)
    {
        var enumVals = EnumExtension.EnumTypeConverter<Type, FieldType>();
        foreach (var enumVal in enumVals)
        {
            Console.WriteLine($"{enumVal.Key}:  {enumVal.Value}");
        }
    }

Upvotes: 1

akaBase
akaBase

Reputation: 2250

Type is a keyword so I suggest using another name for the 2nd enum.

Here are a few methods, I suggest using the Enum.TryParse to check for the conversion.

public enum FieldType
{
    Document_Class_Code,
    Document,
    Document_Number,
    DocumentType,
    Passport_Number,
    Invitation_Number,
}

public enum FieldTypeCopy
{
    Document_Class_Code,
    Document,
    Document_Number,
    DocumentType,
    Passport_Number,
    Invitation_Number,

}

FieldType fieldType = FieldType.DocumentType;

// Explicit conversion using the order 
int i = (int)fieldType;
FieldTypeCopy fieldTypeCopy1 = (FieldTypeCopy)i;
Console.WriteLine("Copy 1: " + fieldTypeCopy1.ToString());


// Parse without check
FieldTypeCopy fieldTypeCopy2 = (FieldTypeCopy)Enum.Parse(typeof(FieldType), fieldType.ToString(), true);
Console.WriteLine("Copy 2: " + fieldTypeCopy2.ToString());


// Parse with check
if (Enum.TryParse(fieldType.ToString(), out FieldTypeCopy fieldTypeCopy3))
{
    Console.WriteLine("Copy 3: " + fieldTypeCopy3.ToString());
}
else
{
    Console.WriteLine("Unable to Parse value to enum");
}

Upvotes: 1

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