在 AutoMapper 中添加自定义 IObjectMapper 可以让我们实现对象之间的高效映射。下面是添加自定义 IObjectMapper 的步骤:
public class CustomObjectMapper : IObjectMapper { public bool IsMatch(TypePair context) { // return true if you want this mapper to handle the mapping for the given context // return false otherwise }
public Expression MapExpression(Expression sourceExpression, Expression destExpression, Type destType,
IMapperMappingContext context)
{
// create your mapping expression here
// sourceExpression is the expression for the source object
// destExpression is the expression for the destination object
// destType is the destination type
// context gives you access to things like the IMapper instance and current mapping operation
}
}
var mapperConfiguration = new MapperConfiguration(cfg =>
{
cfg.CreateMap
var source = new SourceType();
var dest = mapper.Map
通过这些步骤,就可以添加自定义 IObjectMapper,并实现对象之间的高效映射。