private void Button_Click(object sender, RoutedEventArgs e)
{
if (semester.Text == "")
{
a1.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
if (type.Text == "")
{
a2.Visibility = Visibility.Visible;
}
if (group.Text == "")
{
a3.Visibility = Visibility.Visible;
}
if (Discipline.Text == "")
{
a4.Visibility = Visibility.Visible;
}
if (student.Text == "")
{
a5.Visibility = Visibility.Visible;
}
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
}
}
else
{
if (type.Text == "")
{
a2.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
if (group.Text == "")
{
a3.Visibility = Visibility.Visible;
}
if (Discipline.Text == "")
{
a4.Visibility = Visibility.Visible;
}
if (student.Text == "")
{
a5.Visibility = Visibility.Visible;
}
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
}
}
else
{
if (group.Text == "")
{
a3.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
if (Discipline.Text == "")
{
a4.Visibility = Visibility.Visible;
}
if (student.Text == "")
{
a5.Visibility = Visibility.Visible;
}
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
}
}
else
{
if (Discipline.Text == "")
{
a4.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
if (student.Text == "")
{
a5.Visibility = Visibility.Visible;
}
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
}
}
else
{
if (student.Text == "")
{
a5.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
}
}
else
{
if (mark.Text == "")
{
a6.Visibility = Visibility.Visible;
p.Visibility = Visibility.Visible;
}
else
{
ListInterface a = new ClassList();
a.AddMark(semester.Text, type.Text, group.Text, Discipline.Text, student.Text, mark.Text);
mark.SelectedIndex = -1;
student.SelectedIndex = -1;
}
}
}
}
}
}
}