public Staff()
{
InitializeComponent();
//Hide both groupbox
TR_GB.Hide();
TCC_GB.Hide();
//Hide description text
TCC_Cat_Description_Text_LB.Text = "";
//Hide no result label
No_result_LB.Hide();
TCC_Course_LB.Hide();
TCC_Topic_LB.Hide();
}
//Show Course topics based on the select item
private void TCC_Course_LB_SelectedIndexChanged(object sender, EventArgs e)
{
if (TCC_Course_LB.SelectedIndex != -1)
{
TCC_Topic_LB.Show();
//retrieve ID of the select item.
string x = SC.TCIDRec(TCC_Course_LB.SelectedItem.ToString(), "Course");
//retrieve Topic Items have the same ID as the Course ID.
TCC_Topic_LB.DataSource = SC.TCNameRec(x, "Topic");
TopicName = SC.TCNameRec(x, "Topic");
//retrieve Course Description
TCC_Course_Description_Text_LB.Text = SC.TCCDataDescripRetrieve("Course", TCC_Course_LB.Text.ToString());
}
}
//Show Category Courses based on select item.
private void TCC_Cat_LB_SelectedIndexChanged(object sender, EventArgs e)
{
if (TCC_Cat_LB.SelectedIndex != -1)
{
TCC_Course_LB.Show();
//retrieve Category select item ID
string x = SC.TCIDRec(TCC_Cat_LB.SelectedItem.ToString(), "Category");
//Use the retrieved ID to search for list of Courses Name have the same ID
TCC_Course_LB.DataSource = SC.TCNameRec(x, "Course");
CourseName = SC.TCNameRec(x, "Course");
//retrieve Category Description
TCC_Cat_Description_Text_LB.Text = SC.TCCDataDescripRetrieve("Category", TCC_Cat_LB.Text.ToString());;
//refresh Topic List Box
if (TCC_Topic_LB.DataSource != null)
{
TCC_Topic_LB.Hide();
TCC_Topic_LB.DataSource = null;
}
}
}
