private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
	if (e.ColumnIndex >= 0 && e.RowIndex >= 0)
	{
		StudentInfo info = new StudentInfo();
		info.StdNo =Convert.ToInt32
			(dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[0].Value.ToString());
		info.Name = 
			dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[1].Value.ToString();              
		info.Lecture = 
			dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[2].Value.ToString();
		info.Year = Convert.ToInt32
			(dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[3].Value.ToString());
		info.Exam1 = Convert.ToInt32
			(dataGridView1.Rows[dataGridView1.CurrentRow.Index].Cells[4].Value.ToString());
		Form2 frm = new Form2(info);
		frm.Show();
	}
}

}
public class StudentInfo
{
private int stdNo;

public int StdNo
{
	get { return stdNo; }
	set { stdNo = value; }
}
private string name;

public string Name
{
	get { return name; }
	set { name = value; }
}


private string surName;

public string SurName
{
	get { return surName; }
	set { surName = value; }
}
private string lecture;

public string Lecture
{
	get { return lecture; }
	set { lecture = value; }
}
private int year;

public int Year
{
	get { return year; }
	set { year = value; }
}
private int exam1;

public int Exam1
{
	get { return exam1; }
	set { exam1 = value; }
}

}
StudentInfo stuInfo;
public Form2(StudentInfo info)
{
	InitializeComponent();
  stuInfo=new StudentInfo();
	stuInfo=info;
}

private void Form2_Load(object sender, EventArgs e)
{
	MessageBox.Show(stuInfo.StdNo.ToString() + stuInfo.Name + stuInfo.Lecture + stuInfo.Year + stuInfo.Exam1);
}