//绑定班级下拉列表
public void DataBindSchoolClassList(DropDownList ddl)
{
DalOperationAboutEnglishExam doac = new DalOperationAboutEnglishExam();
DataTable dt = doac.GetAllSchoolClass().Tables[0];
schoolClassName = "{";
List<string> schoolClassNameTemp = new List<string>();
ddl.Items.Add(new ListItem("全部班级", "all"));
for (int i = 0; i < dt.Rows.Count; i++)
{
ddl.Items.Add(new ListItem(dt.Rows[i]["className"].ToString().Trim(), dt.Rows[i]["SchoolClassID"].ToString().Trim()));
schoolClassNameTemp.Add("\"" + dt.Rows[i]["className"].ToString().Trim() + "\":" + "\"" + dt.Rows[i]["SchoolClassID"].ToString().Trim()+"\"");
}
schoolClassName += String.Join(",", schoolClassNameTemp.ToArray());
schoolClassName += "}";
}
