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i m using Linq to SQl for my project, i tried all CRUD operations (Create, Delete, Edit, details) its working, but how to perform validation, means adding Required , Range, and other common Validation using System. Data. Annotation class,
I don know how to do this, please help me in detail, as i am beginner, how should i validate all user input fields.
Create a partial class for the entity and add a MetadataTypeAttribute on it.
Then create the meta data class with object properties and then put annotations on them.
http://diegworld.blogspot.com/2011/05/using-dataannotations-to-validate.html