public void TestToLong()
{
DateTime date = new DateTime();
Assert.Equal(date.Ticks, LongConverter.ToLong(date));
Assert.Equal(100, LongConverter.ToLong(new TimeSpan(100)));
Assert.Equal(123, LongConverter.ToLong(123));
Assert.Equal(123, LongConverter.ToLong((short)123));
Assert.Equal(123, LongConverter.ToLong(123.456));
Assert.Equal(123, LongConverter.ToLong(DoubleConverter.ToDouble(123.456)));
Assert.Equal(123, LongConverter.ToLong("123"));
Assert.Equal(123, LongConverter.ToLong("123.465"));
Assert.Equal(0, LongConverter.ToLong(null));
}
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);
}
}
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);
}
}
public void TestToLongWithDefault()
{
Assert.Equal(123, LongConverter.ToLongWithDefault(null, 123));
Assert.Equal(0, LongConverter.ToLongWithDefault(false, 123));
Assert.Equal(123, LongConverter.ToLongWithDefault("ABC", 123));
}
