Trim String In Automapper

Question

Mapper.CreateMap<DataViewModel, DataSource>()

My Source Here Contains String Values Coming from user interface. I want to trim all the string before i map it to my destination object. Couldn't find a solution for this. Anyone Knows how this is to be done

Joseph Woodward · Accepted Answer · 2015-01-24T08:54:11.907

9

This can be done using the ForMember method, like so:

Mapper.CreateMap<DataViewModel, DataSource>()
.ForMember(x => x.YourString, opt => opt.MapFrom(y => y.YourString.Trim()));

If you want to trim more than one property you can chain the .ForMember() method like this:

Mapper.CreateMap<DataViewModel, DataSource>()
.ForMember(x => x.YourString, opt => opt.MapFrom(y => y.YourString.Trim()))
.ForMember(x => x.YourString1, opt => opt.MapFrom(y => y.YourString1.Trim()))
.ForMember(x => x.YourString2, opt => opt.MapFrom(y => y.YourString2.Trim()));

Whilst this would get the job done, I would suggest performing input sanitisation elsewhere in your application as it doesn't belong in the mapping.

edited Jan 24 '15 at 08:54

answered Jan 24 '15 at 02:36

Joseph Woodward

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I want to do trimming for all the members of the source object not for a single one. can u tell me how that is to be done? – Koushik Saha Jan 24 '15 at 06:58
You can refer to @Andrew Whitaker 's [answer](https://stackoverflow.com/a/30987831/4928277) – Engin Aydogdu May 01 '21 at 08:52

score 6 · Answer 2 · answered Jan 14 '22 at 05:07

6

You can also use AddTransform

CreateMap<DataViewModel, DataSource>()
    .AddTransform<string>(s => string.IsNullOrWhiteSpace(s) ? "" : s.Trim());

answered Jan 14 '22 at 05:07

Mohammad Dayyan

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Trim String In Automapper

2 Answers2