How to do data validation in ssis using C#

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SSIS

CRM

Hi
I'm currently importing data from flatfile to crm database using C# script component in ssis package.
i now need to do data validation for the data like
1) To check whether the attribute is required field in crm.
2) To check whether the attribute is taking correct datatype,
3) To check the length and max,Min size of the Text type Attribute,
4) To check lookup and picklist type attributes were referring to correct schema.
all this i need them to be validated in ssis script component using C# code.
i'm very new to such data validations.
if any one guides me or helps me,i can learn a lot and it would be helpful for me.

What I have tried:

i tried to do data validation using data conversion transformation and and data profiling task and later came to know that is not the exact way to do it and it should be in c# code.