void showStudentInfo(Student stu)
{
if (stu != null)
{
textBoxName.Text = stu.NAME;
textBoxNum.Text = stu.NUM;
textBoxClass.Text = stu.MyClass.ClassName;
textBoxChinese.Text = Convert.ToString(stu.CHINESE);
textBoxMath.Text = Convert.ToString(stu.MATH);
textBoxEnglish.Text = Convert.ToString(stu.ENGLISH);
textBoxAverage.Text = Convert.ToString((stu.ENGLISH + stu.MATH + stu.CHINESE) / 3);
textBoxTotal.Text = Convert.ToString(stu.ENGLISH + stu.MATH + stu.CHINESE);
}
}
private void buttonSearch_Click(object sender, EventArgs e)
{
switch (buttonSearch.Text)
{
case "删除":
{
if (studentInUse != null)
{
studentInUse.MyClass.removeStudent(studentInUse.NUM);
studentInUse = null;
}
break;
}
case "完成":
{
try
{
studentInUse.NAME = textBoxName.Text;
studentInUse.NUM = textBoxNum.Text;
studentInUse.CHINESE = Convert.ToSingle(textBoxChinese.Text);
studentInUse.ENGLISH = Convert.ToSingle(textBoxEnglish.Text);
studentInUse.MATH = Convert.ToSingle(textBoxEnglish.Text);
refreshStudentList(classInUse);
enableReadOnly(true);
checkBoxChangeable.Visible = true;
checkBoxChangeable.Checked = false;
}
catch
{
MessageBox.Show("更新失败，有些数据没有更新！");
}
finally
{
}
break;
}
case "添加":
{
Student stuTmp = studentInUse;
try
{
studentInUse = new Student(textBoxNum.Text, textBoxName.Text, Convert.ToSingle(textBoxChinese.Text), Convert.ToSingle(textBoxMath.Text), Convert.ToSingle(textBoxEnglish.Text), classInUse);
refreshStudentList(classInUse);
showStudentInfo(studentInUse);
enableReadOnly(true);
checkBoxChangeable.Visible = true;
checkBoxChangeable.Checked = false;
}
catch
{
MessageBox.Show("创建失败");
studentInUse = stuTmp;
listBoxStuList.SelectedIndex = 0;
}
break;
}
default: break;
}
}
private void listBoxStuList_SelectedIndexChanged(object sender, EventArgs e)
{
if (listBoxStuList.SelectedItem.ToString() == "添加新学生")
{
checkBoxChangeable.Checked = true;
buttonSearch.Text = "添加";
enableReadOnly(false);
checkBoxChangeable.Visible = false;
{
textBoxName.Text = "";
textBoxNum.Text = "";
textBoxClass.Text = classInUse.ClassName;
textBoxChinese.Text = "0";
textBoxMath.Text = "0";
textBoxEnglish.Text = "0";
textBoxAverage.Text = "0";
textBoxTotal.Text = "0";
}
}
else
{
enableReadOnly(true);
checkBoxChangeable.Checked = false;
checkBoxChangeable.Visible = true;
buttonSearch.Text = "删除";
int index;
studentInUse = classInUse.getStudent(listBoxStuList.SelectedIndex + 1);
index = listBoxStuList.SelectedIndex;
showStudentInfo(studentInUse);
listBoxStuList.SelectedIndex = index;
}
}
/// <summary>
/// 添加一个学生进入班级实例的最后
/// </summary>
/// <param name="stu"></param>
/// <returns></returns>
public bool addStudent(Student stu)
{
int i;
if(studentNum!=1)
{
for (i = 0; i < studentNum;i++ )
{
if (studList[i].NUM == stu.NUM) return false;
}
}
studList[studentNum] = stu;
studentNum++;
return true;
}