[英]Automapper, add number of days to destination DateTime property
I'm have a scenario where I am trying to map an integer value in my source object to a DateTime
property. 我有一个场景,我试图将源对象中的整数值映射到
DateTime
属性。 Naturally you can't do that. 当然你不能这样做。 But what I want to do is add the amount of days in the integer in my source, to the
DateTime
property value of my destination property. 但我想要做的是将源中整数的天数添加到目标属性的
DateTime
属性值。
I haven't been able to find a solution so far that explains this scenario. 到目前为止,我还没能找到解释这种情况的解决方案。
Anyone know how to do that ? 谁知道怎么做?
Pseudo code example: 伪代码示例:
Mapper.CreateMap<EditAdView, Ad>()
.ForMember(dest => dest.ExpirationDate, opt => opt.MapFrom(src => dest.ExpirationDate.AddDays(src.ExtendedDurationInWeeks * 7));
The above example doesn't work, but it does show what I want to do. 上面的示例不起作用,但它确实显示了我想要做的事情。 Namely add an amount of days to the existing value of the destination property object
即向目标属性对象的现有值添加天数
Keep in mind : the dest.ExpirationDate
property is already populated with a value, which is why I need to update it from my source object. 请记住 :
dest.ExpirationDate
属性已经填充了一个值,这就是我需要从源对象更新它的原因。
Thanks in advance. 提前致谢。
Solution: (see below answer for details) 解决方案:(详见下方答案)
//in the mapping configuration
Mapper.CreateMap<EditAdView, Ad>()
.ForMember(dest => dest.ExpirationDate, opt => opt.Ignore())
.AfterMap((src, dest) => dest.ExpirationDate = dest.ExpirationDate.AddDays(src.ExtendedDuretionInWeeks * 7));
//in the controller
existingAd = Mapper.Map(view, existingAd);
I think this will do what you're looking for: 我想这会做你想要的:
public class Source
{
public int ExtendedDurationInWeeks { get; set; }
}
public class Destination
{
public DateTime ExpirationDate { get; set; }
public Destination()
{
ExpirationDate = DateTime.Now.Date;
}
}
var source = new Source{ ExtendedDurationInWeeks = 2 };
var destination = new Destination {ExpirationDate = DateTime.Now.Date};
Mapper.CreateMap<Source, Destination>()
.AfterMap((s,d) => d.ExpirationDate =
d.ExpirationDate.AddDays(s.ExtendedDurationInWeeks * 7));
destination = Mapper.Map(source, destination);
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