How do I ignore property in AutoMapper?

You can configure AutoMapper, that it will ignore some properties during copying. It can be usefull, for example, if you get some object from EntityFramework and want to create object copy for cache. We configure AutoMapper to ignore property B during copying.

What is AutoMapper used for?

AutoMapper is a popular object-to-object mapping library that can be used to map objects belonging to dissimilar types. As an example, you might need to map the DTOs (Data Transfer Objects) in your application to the model objects.

What is AutoMapper .NET core?

AutoMapper is a component that helps to copy data from one type of object to another type of object. It is more like an object-object mapper. According to the AutoMapper docs, Object-object mapping works by transforming an input object of one type into an output object of a different type.

Is AutoMapper case sensitive?

2 Answers. The trunk version is now default case-insensitive, and supports multiple naming conventions (camelCase, lowercase_underscore, etc). Look for this in the next version of AutoMapper, which should drop in a couple of days.

What is reverse map in AutoMapper?

What is AutoMapper Reverse Mapping in C#? The Automapper Reverse Mapping is nothing but the two-way mapping which is also called as bidirectional mapping. As of now, the mapping we discussed are one directional means if we have two types let’s say Type A and Type B, then we Map Type A with Type B.

Is AutoMapper slow?

It works, but it’s very slow. I have a collection with 6893 objects with 23 properties (test environment, production should have much more). With a loop it takes 00:02:32.8118534 to map everything.

What is AutoMapper configuration?

AutoMapper is the convention-based object to object mapper. It maps the properties of two different objects by transforming the input object of one type to the output object of another type.

How do I get rid of AutoMapper?

To disable automapping, use Windows PowerShell to remove full access permissions from the user for the mailbox, and then add back full access permissions to the user. When you add back full access permissions to the user, use the AutoMapping:$false parameter.

How do I use Auto Mapper?

AutoMapper is used to map data from object to objects….We want to map Employee class to a User class, by using Automapper we can map as below,

  1. Employee objEmployee = new Employee.
  2. {
  3. EmployeeId = 1001,
  4. EmployeeFName = “Pradeep”,
  5. EmployeeLName = “Sahoo”,
  6. Address = “KRPURAM”,
  7. City = “BANGALORE”,
  8. State = “KA”,

Is AutoMapper bidirectional?

Yes, because if you change the type of some property (for example DateTime -> string) it is not bidirectional (you will need to instruct Automapper how to convert string -> DateTime).

How to inject automapper imappingengine into a container?

The Mapper class has a static property Mapper.Engine. Use this to register the engine with the container: If you need to load your profiles before injecting the engine I would insert that configuration code alongside the above snippet.

Why does custom member mapping fail in automapper?

The condition prevents the Value property from being mapped onto the target, but the custom member mapping would fail before that point because it calls Value.Length, and Value is null. Prevent this by using a PreCondition instead or by ensuring the custom member mapping code can complete safely regardless of conditions:

Why does automapper pass the source object to the resolver?

Check the execution plan. By default, AutoMapper passes the source object to the resolver. This limits the reusability of resolvers, since the resolver is coupled to the source type.

Where does the destination value go in automapper?

Note that the value you return from your resolver is not simply assigned to the destination property. Any map that applies will be used and the result of that mapping will be the final destination property value. Check the execution plan. By default, AutoMapper passes the source object to the resolver.