public EditStudent(string studNo)
{
InitializeComponent();
Student student = studentDAL.FindStudent(studNo);
textBox1.Text = student.StudNo;
textBox2.Text = student.StudName;
radioButton1.Checked = student.StudSex == '男' ? true : false;
dateTimePicker1.Value = student.StudBirthDate;
comboBox1.Text = student.StudMajor;
checkBox1.Checked = student.StudIsMember;
if (student.StudPic != null)
{
MemoryStream ms = new MemoryStream(student.StudPic);
pictureBox1.Image = Image.FromStream(ms);
}
}