AppStore.AppStore_XamlTypeInfo.XamlUserType.CreateFromString C# (CSharp) Method

        override public object CreateFromString(string input)
        {
            if (_enumValues != null)
            {
                int value = 0;

                string[] valueParts = input.Split(',');

                foreach (string valuePart in valueParts) 
                {
                    object partValue;
                    int enumFieldValue = 0;
                    try
                    {
                        if (_enumValues.TryGetValue(valuePart.Trim(), out partValue))
                        {
                            enumFieldValue = global::System.Convert.ToInt32(partValue);
                        }
                        else
                        {
                            try
                            {
                                enumFieldValue = global::System.Convert.ToInt32(valuePart.Trim());
                            }
                            catch( global::System.FormatException )
                            {
                                foreach( string key in _enumValues.Keys )
                                {
                                    if( string.Compare(valuePart.Trim(), key, global::System.StringComparison.OrdinalIgnoreCase) == 0 )
                                    {
                                        if( _enumValues.TryGetValue(key.Trim(), out partValue) )
                                        {
                                            enumFieldValue = global::System.Convert.ToInt32(partValue);
                                            break;
                                        }
                                    }
                                }
                            }
                        }
                        value |= enumFieldValue; 
                    }
                    catch( global::System.FormatException )
                    {
                        throw new global::System.ArgumentException(input, FullName);
                    }
                }

                return value; 
            }
            throw new global::System.ArgumentException(input, FullName);
        }