public static object ToValue(INullable nullableValue)
{
if (nullableValue == null)
{
return(null);
}
if (nullableValue is SqlInt32)
{
return(ConvertUtils.ToValue((SqlInt32)nullableValue));
}
if (nullableValue is SqlInt64)
{
return(ConvertUtils.ToValue((SqlInt64)nullableValue));
}
if (nullableValue is SqlBoolean)
{
return(ConvertUtils.ToValue((SqlBoolean)nullableValue));
}
if (nullableValue is SqlString)
{
return(ConvertUtils.ToValue((SqlString)nullableValue));
}
if (nullableValue is SqlDateTime)
{
return(ConvertUtils.ToValue((SqlDateTime)nullableValue));
}
throw new ArgumentException("Unsupported INullable type: {0}".FormatWith(CultureInfo.InvariantCulture, nullableValue.GetType()));
}
public static object ToValue(INullable nullableValue)
{
if (nullableValue == null)
{
return((object)null);
}
if (nullableValue is SqlInt32)
{
return(ConvertUtils.ToValue((INullable)(ValueType)nullableValue));
}
if (nullableValue is SqlInt64)
{
return(ConvertUtils.ToValue((INullable)(ValueType)nullableValue));
}
if (nullableValue is SqlBoolean)
{
return(ConvertUtils.ToValue((INullable)(ValueType)nullableValue));
}
if (nullableValue is SqlString)
{
return(ConvertUtils.ToValue((INullable)(ValueType)nullableValue));
}
if (nullableValue is SqlDateTime)
{
return(ConvertUtils.ToValue((INullable)(ValueType)nullableValue));
}
else
{
throw new ArgumentException(StringUtils.FormatWith("Unsupported INullable type: {0}", (IFormatProvider)CultureInfo.InvariantCulture, (object)nullableValue.GetType()));
}
}
public static object Convert(object initialValue, CultureInfo culture, Type targetType)
{
if (initialValue == null)
{
throw new ArgumentNullException("initialValue");
}
if (ReflectionUtils.IsNullableType(targetType))
{
targetType = Nullable.GetUnderlyingType(targetType);
}
Type type = initialValue.GetType();
if (targetType == type)
{
return(initialValue);
}
if (ConvertUtils.IsConvertible(initialValue) && ConvertUtils.IsConvertible(targetType))
{
if (TypeExtensions.IsEnum(targetType))
{
if (initialValue is string)
{
return(Enum.Parse(targetType, initialValue.ToString(), true));
}
if (ConvertUtils.IsInteger(initialValue))
{
return(Enum.ToObject(targetType, initialValue));
}
}
return(Convert.ChangeType(initialValue, targetType, (IFormatProvider)culture));
}
else
{
if (initialValue is string && typeof(Type).IsAssignableFrom(targetType))
{
return((object)Type.GetType((string)initialValue, true));
}
if (TypeExtensions.IsInterface(targetType) || TypeExtensions.IsGenericTypeDefinition(targetType) || TypeExtensions.IsAbstract(targetType))
{
throw new ArgumentException(StringUtils.FormatWith("Target type {0} is not a value type or a non-abstract class.", (IFormatProvider)CultureInfo.InvariantCulture, (object)targetType), "targetType");
}
if (initialValue is string)
{
if (targetType == typeof(Guid))
{
return((object)new Guid((string)initialValue));
}
if (targetType == typeof(Uri))
{
return((object)new Uri((string)initialValue, UriKind.RelativeOrAbsolute));
}
if (targetType == typeof(TimeSpan))
{
return((object)TimeSpan.Parse((string)initialValue));
}
}
TypeConverter converter1 = ConvertUtils.GetConverter(type);
if (converter1 != null && converter1.CanConvertTo(targetType))
{
return(converter1.ConvertTo((ITypeDescriptorContext)null, culture, initialValue, targetType));
}
TypeConverter converter2 = ConvertUtils.GetConverter(targetType);
if (converter2 != null && converter2.CanConvertFrom(type))
{
return(converter2.ConvertFrom((ITypeDescriptorContext)null, culture, initialValue));
}
if (initialValue == DBNull.Value)
{
if (ReflectionUtils.IsNullable(targetType))
{
return(ConvertUtils.EnsureTypeAssignable((object)null, type, targetType));
}
else
{
throw new Exception(StringUtils.FormatWith("Can not convert null {0} into non-nullable {1}.", (IFormatProvider)CultureInfo.InvariantCulture, (object)type, (object)targetType));
}
}
else if (initialValue is INullable)
{
return(ConvertUtils.EnsureTypeAssignable(ConvertUtils.ToValue((INullable)initialValue), type, targetType));
}
else
{
throw new InvalidOperationException(StringUtils.FormatWith("Can not convert from {0} to {1}.", (IFormatProvider)CultureInfo.InvariantCulture, (object)type, (object)targetType));
}
}
}
public static object Convert(object initialValue, CultureInfo culture, Type targetType)
{
if (initialValue == null)
{
throw new ArgumentNullException("initialValue");
}
if (ReflectionUtils.IsNullableType(targetType))
{
targetType = Nullable.GetUnderlyingType(targetType);
}
Type type = initialValue.GetType();
if (targetType == type)
{
return(initialValue);
}
if (ConvertUtils.IsConvertible(initialValue.GetType()) && ConvertUtils.IsConvertible(targetType))
{
if (targetType.IsEnum())
{
if (initialValue is string)
{
return(Enum.Parse(targetType, initialValue.ToString(), true));
}
if (ConvertUtils.IsInteger(initialValue))
{
return(Enum.ToObject(targetType, initialValue));
}
}
return(System.Convert.ChangeType(initialValue, targetType, culture));
}
if (initialValue is DateTime && targetType == typeof(DateTimeOffset))
{
return(new DateTimeOffset((DateTime)initialValue));
}
if (initialValue is byte[] && targetType == typeof(Guid))
{
return(new Guid((byte[])initialValue));
}
if (initialValue is string)
{
if (targetType == typeof(Guid))
{
return(new Guid((string)initialValue));
}
if (targetType == typeof(Uri))
{
return(new Uri((string)initialValue, UriKind.RelativeOrAbsolute));
}
if (targetType == typeof(TimeSpan))
{
return(ConvertUtils.ParseTimeSpan((string)initialValue));
}
if (targetType == typeof(byte[]))
{
return(System.Convert.FromBase64String((string)initialValue));
}
if (typeof(Type).IsAssignableFrom(targetType))
{
return(Type.GetType((string)initialValue, true));
}
}
if (targetType == typeof(BigInteger))
{
return(ConvertUtils.ToBigInteger(initialValue));
}
if (initialValue is BigInteger)
{
return(ConvertUtils.FromBigInteger((BigInteger)initialValue, targetType));
}
TypeConverter converter = ConvertUtils.GetConverter(type);
if (converter != null && converter.CanConvertTo(targetType))
{
return(converter.ConvertTo(null, culture, initialValue, targetType));
}
TypeConverter converter2 = ConvertUtils.GetConverter(targetType);
if (converter2 != null && converter2.CanConvertFrom(type))
{
return(converter2.ConvertFrom(null, culture, initialValue));
}
if (initialValue == DBNull.Value)
{
if (ReflectionUtils.IsNullable(targetType))
{
return(ConvertUtils.EnsureTypeAssignable(null, type, targetType));
}
throw new Exception("Can not convert null {0} into non-nullable {1}.".FormatWith(CultureInfo.InvariantCulture, type, targetType));
}
else
{
if (initialValue is INullable)
{
return(ConvertUtils.EnsureTypeAssignable(ConvertUtils.ToValue((INullable)initialValue), type, targetType));
}
if (targetType.IsInterface() || targetType.IsGenericTypeDefinition() || targetType.IsAbstract())
{
throw new ArgumentException("Target type {0} is not a value type or a non-abstract class.".FormatWith(CultureInfo.InvariantCulture, targetType), "targetType");
}
throw new InvalidOperationException("Can not convert from {0} to {1}.".FormatWith(CultureInfo.InvariantCulture, type, targetType));
}
}
