public Test(string GradeId, string ClassId, string activityId, int index)
{
InitializeComponent();
Init();
List <Student> students = dbUtill.GetCheckerListByClassIdOnTest(ClassId, activityId);
int i = dbUtill.GetCountByClassIdOnTest(ClassId, activityId);
string gradeName = dbUtill.getGradeNameByGradeId(GradeId);
string className = dbUtill.getClassNameByClassId(ClassId);
stnPanel.ItemsSource = students;
int count = stnPanel.Items.Count;
if (count > 0)
{
if (index > 0 && index < count)
{
stnPanel.SelectedIndex = index;
}
else
{
stnPanel.SelectedIndex = 0;
}
}
PortConfig.serialPort1.DataReceived += new SerialDataReceivedEventHandler(Com_DataReceived);
display_class.Text = " " + gradeName + className + " " + "待检测学生";
ItemCount = stnPanel.Items.Count;
}