Get the type name

Question

How i can get full right name of generic type?

For example: This code

typeof(List).Name

return

Answer 1

Came across this and thought I'd share my own solution. It handles multiple generic arguments, nullables, jagged arrays, multidimensional arrays, combinations of jagged/multidimensional arrays, and any nesting combinations of any of the above. I use it mainly for logging so that it's easier to identify complicated types.

public static string GetGoodName(this Type type)
{
    var sb = new StringBuilder();

    void VisitType(Type inType)
    {
        if (inType.IsArray)
        {
            var rankDeclarations = new Queue();
            Type elType = inType;

            do
            {
                rankDeclarations.Enqueue($"[{new string(',', elType.GetArrayRank() - 1)}]");
                elType = elType.GetElementType();
            } while (elType.IsArray);

            VisitType(elType);

            while (rankDeclarations.Count > 0)
            {
                sb.Append(rankDeclarations.Dequeue());
            }
        }
        else
        {
            if (inType.IsGenericType)
            {
                var isNullable = inType.IsNullable();
                var genargs = inType.GetGenericArguments().AsEnumerable();
                var numer = genargs.GetEnumerator();

                numer.MoveNext();

                if (!isNullable) sb.Append($"{inType.Name.Substring(0, inType.Name.IndexOf('`'))}<");

                VisitType(numer.Current);

                while (numer.MoveNext())
                {
                    sb.Append(",");
                    VisitType(numer.Current);
                }

                if (isNullable)
                {
                    sb.Append("?");
                }
                else
                {
                    sb.Append(">");
                }
            }
            else
            {
                sb.Append(inType.Name);
            }
        }
    }

    VisitType(type);

    var s = sb.ToString();

    return s;
}

This:

typeof(Dictionary>>).GetGoodName()

...returns this:

Dictionary>>