private void Grid1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e) { if (Grid1.CurrentCell.ColumnIndex==2) { e.Control.TextChanged += Grid1_TextChanged; } } private void Grid1_TextChanged(object sender, EventArgs e) { var list = from p in db.Drugs where p.VirtualCode.Contains(Grid1.CurrentRow.Cells["dName"].Value.ToString()) join q in db.GenericDrugs on p.GenericID equals q.GenericID select q; dName.DataSource = list; dName.DisplayMember = "Genericname"; }
var
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