gistfile1.cs

string UnderscoreToCamel(string input, bool upperCamel)
{
    var sb = new StringBuilder();

    bool upper = upperCamel;
    
    foreach (var character in input.ToLower())
    {
        if (character == '_')
        {
            upper = true;
        }
        else if (upper)
        {
            sb.Append(char.ToUpper(character));
            upper = false;
        }
        else
        {
            sb.Append(character);
        }
    }

    return sb.ToString();
}