protected void BindInfo()
{
string teachName = Session["userName"].ToString();
string sql = "select * from PracticeInfo inner join VideoInfo on PracticeInfo.videoId = VideoInfo.VideoId inner join CourseInfo on CourseInfo.courseId = VideoInfo.CourseId where CourseInfo.teacher = " + "'" + teachName + "'";
WorkList.DataSource = DataOperate.GetDataset(sql, "PracticeInfo");
WorkList.DataKeyNames = new string[] { "practiceId" };
WorkList.DataBind();
}
