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Possible Duplicate:
How costly is Reflection?
For sake of making my code generic I have started to use Reflection -to obtain some proerties in DTO objects and to set them-
Does usage of reflection to obtain properties and set them can effect the performance so badly compared to hard-coded setters?
Yes, there is a cost involved in using Reflection.
However, the actual impact on the overall application performance varies. One rule of thumb is to never use Reflection in code that gets executed many times, such as loops. That will usually lead to algorithms that slow down exponentially (O(cn)).
In many cases you can write generic code using delegates instead of Reflection, as described in this blog post.