protected void ImageButton_submit_Click(object sender, ImageClickEventArgs e)
{
if (check())
{
CourseBLL courBLL = new CourseBLL();
string courName = TextBox_courName.Text.Trim();
string credit = TextBox_credit.Text.Trim();
string schoolHour = TextBox_schoolHour.Text.Trim();
Course course = new Course();
course.Name = courName;
course.Credit = credit;
course.SchoolHour = schoolHour;
courBLL.save(course);
Response.Write("<script>alert('添加成功！');location.href='addCourse.aspx';</script>");
}
}