//定课程列表--学期标识(termTag)
public void DataBindCourseList(string termTag)
{
DalOperationAboutCourses doac = new DalOperationAboutCourses();
DataSet ds = doac.FindTermCoursesList(termTag);
dlstCourses.DataSource = ds.Tables[0];
dlstCourses.DataBind();
}