validation in asp.net

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ASP.NET4

hi every one;
i am beginner in asp .net.
i am working in asp.net last six month.
i have a web form there are multiple text fields and four button "save,update,delete and search"
and i used validation in text fields. but i want that when i click the save button then validation do work and when i click the search button then they doesn't work or disable so that i can search the database record,update and delete also....?

can any body solve my problem??


Thanks in advance.