fetching data from crm in asp.net grid view

Hello,

I'm creating one ASP.Net webform. If I enter the crm contact Email id & click on "Fetch" button , need to fetch the Case data from dynamics CRM in Asp.Net Grid view as shown below & also the 'contact name' with entered Email id.

Please guide how can i connect my .net web application with Crm as per above requirement.

Thank You!!

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