private void ComboBox_Semester_SelectedIndexChanged(object sender, EventArgs e)
{
Listbox_Available.Items.Clear();
var source = course.GetCourseBySemester(ComboBox_Semester.Text.Trim());
foreach (DataRow row in source.Rows)
{
Listbox_Available.Items.Add(row["label"]);
}
for (int i = 0; i < Listbox_Available.Items.Count; i++)
{
for (int j = 0; j < ListBoxCourse.Items.Count; j++)
{
if (
Listbox_Available.GetItemText((int)ListBoxCourse.Items[i]) ==
ListBoxCourse.GetItemText((int)ListBoxCourse.Items[j])
)
{
Listbox_Available.Items.Remove(ListBoxCourse.Items[j]);
}
}
}
}
public void LoadListBox()
{
ListBoxCourse.Items.Clear();
if (ComboBox_Student.Text.Length == 0)
{
return;
}
var source = student.GetSelectedCourses(Convert.ToInt32(ComboBox_Student.Text.Trim()));
foreach (DataRow row in source.Rows)
{
ListBoxCourse.Items.Add(row["label"]);
}
Listbox_Available.Items.Clear();
source = course.GetCourseBySemester(ComboBox_Student.Text.Trim());
foreach (DataRow row in source.Rows)
{
Listbox_Available.Items.Add(row["label"]);
}
for (int i = 0; i < Listbox_Available.Items.Count; i++)
{
for (int j = 0; j < ListBoxCourse.Items.Count; j++)
{
try
{
if (Listbox_Available.GetItemText((int)Listbox_Available.Items[i]) == ListBoxCourse.GetItemText((int)ListBoxCourse.Items[j]))
{
Listbox_Available.Items.Remove(ListBoxCourse.Items[j]);
}
}
catch (Exception)
{
continue;
}
}
}
}