Пример #1
0
        public static T ToTypeWithDefault <T>(object value, T defaultValue)
        {
            if (value == null)
            {
                return(defaultValue);
            }
            if (value is T)
            {
                return((T)value);
            }

            var typeInfo = typeof(T).GetTypeInfo();

            if (typeInfo.IsEnum)
            {
                value = EnumConverter.ToEnumWithDefault <T>(value, defaultValue);
            }
            else if (typeInfo.IsAssignableFrom(typeof(decimal)))
            {
                value = DecimalConverter.ToNullableDecimal(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(string)))
            {
                value = StringConverter.ToNullableString(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(long)))
            {
                value = LongConverter.ToNullableLong(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(int)))
            {
                value = IntegerConverter.ToNullableInteger(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(double)))
            {
                value = DoubleConverter.ToNullableDouble(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(float)))
            {
                value = FloatConverter.ToNullableFloat(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(bool)))
            {
                value = BooleanConverter.ToNullableBoolean(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(DateTime)))
            {
                value = DateTimeConverter.ToNullableDateTime(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(TimeSpan)))
            {
                value = TimeSpanConverter.ToNullableTimeSpan(value);
            }

            if (value == null)
            {
                return(defaultValue);
            }

            try
            {
                if (typeInfo.IsClass || typeInfo.IsInterface)
                {
                    return(value is T ? (T)value : defaultValue);
                }
                else
                {
                    return((T)value);
                }
            }
            catch
            {
                return(defaultValue);
            }
        }
Пример #2
0
        public static T?ToNullableType <T>(object value) where T : struct
        {
            if (value == null)
            {
                return(null);
            }
            if (value is T)
            {
                return((T)value);
            }

            var typeInfo = typeof(T).GetTypeInfo();

            if (typeInfo.IsEnum)
            {
                value = EnumConverter.ToNullableEnum <T>(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(decimal)))
            {
                value = DecimalConverter.ToNullableDecimal(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(string)))
            {
                value = StringConverter.ToNullableString(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(long)))
            {
                value = LongConverter.ToNullableLong(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(int)))
            {
                value = IntegerConverter.ToNullableInteger(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(double)))
            {
                value = DoubleConverter.ToNullableDouble(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(float)))
            {
                value = FloatConverter.ToNullableFloat(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(DateTime)))
            {
                value = DateTimeConverter.ToNullableDateTime(value);
            }
            else if (typeInfo.IsAssignableFrom(typeof(TimeSpan)))
            {
                value = TimeSpanConverter.ToNullableTimeSpan(value);
            }

            if (value == null)
            {
                return(null);
            }

            try
            {
                return((T)value);
            }
            catch
            {
                return(null);
            }
        }