Code:

CurrencyManager cm = (CurrencyManager)dataGridView.BindingContext[dataGridView.DataSource];
            if (cm == null || cm.Current == null)
            {
                MessageBox.Show(this, "There are no element!");
                return;
            }
            TestModelClass modelClass = (TestModelClass)cm.Current;


            AnotherForm anotherForm = new AnotherForm(modelClass);
            anotherForm.Show();