how to display grid data in form

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SQL-Server-2005

C#

SQL-Server

I have main form in which having datagrid. to which i bind data at runtime using datatable of dataset.
now on double click of datarow i want to show all columns in different textbox of another form.
example.
i have some labels ilke student,staffs,subjects and on respective label click the
the datagridview changes.
so i want to edit the row then i double click on datagrid row or click on edit button then that row data should come in form to edit

can anybody help please.