how to insert update delete within the wpf datagrid itself

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C#

MySQL

hi

i am doing some project for my college using wpf(c#) and mysql and need to use datagrid to display info about students once displayed the admin should be able to insert new info delete and update certain info about students ..
i do not want admin to click on the row, then display data in textboxes and delete or update them from there on clicking a button ...i want to let the admin just delete from the datagrid and type on the datagrid directly over existing data and hit update and reflect that in my database.
i have seen many examples but nothing is working out and this is hindering my project big time
Please help me out

i tried and got this working
http://www.nullskull.com/a/1441/wpf-gridview-sample-to-insert-update-and-delete-records.aspx

but this is through textboxes i need to do it directly through datgrid i.e i need a editable datagrid