private void mtxtSearch_TextChanged(object sender, EventArgs e)
{
var displayreq = from d in db.Students
let Fullname = d.Firstname + " " + d.Lastname
where Fullname.Contains(mtxtSearch.Text)
select new
{
Fullname,
d.Form137,
d.Form138,
d.GoodMoral,
d.NSO
};
mdgvRequirments.DataSource = displayreq;
}