How to use Sharepoint people picker in Visual Webpart

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SharePoint2010

Hi,

In my custom page(visual webpart), i have one Textbox to enter the name , and one button to check the name (for People& Group field).

user will type the name , click on check button.

while clicking on the check button, i want to dispaly the 'display name of the username' which was entered in textbox ( people Picker functionality)

select people: SHAREPOINT PICKER

Username :

Now, based on the EmployeeName,i need to autofill the desiganation,empno and mobile number in textboxes with respective values.Here getting Employeename from userprofiles.


how to get this? please help me. Give me any suggestion

Thanks in advance.