private void changeMarkToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
if (dataListView.Items.Count > 0)
{
if (m_FormToChangeTheMark == null)
{
m_FormToChangeTheMark = FormChangeMark.GetInstanceOfFormChangeMark();
}
ListViewItem itemToChange = dataListView.SelectedItems[0];
string chosenCourseName = itemToChange.SubItems[(int)eSubItem.CourseName].Text;
string chosenCourePoints = itemToChange.SubItems[(int)eSubItem.Points].Text;
byte markToChange = byte.Parse(itemToChange.SubItems[(int)eSubItem.Mark].Text);
if (m_FormToChangeTheMark.ShowDialog(chosenCourseName, markToChange, m_CalAvg, chosenCourePoints) == DialogResult.OK)
{
short totalOffset = (short)(m_FormToChangeTheMark.LastValue - markToChange);
itemToChange.SubItems[(int)eSubItem.Mark].Text = m_FormToChangeTheMark.LastValue.ToString();
m_CalAvg.ChangeMarkAndTotal(totalOffset.ToString(), itemToChange.SubItems[(int)eSubItem.Points].Text);
updateMarkAverageLabel();
updateTotalPoints();
m_ChangedListView = true;
}
}
}
catch (Exception)
{
MessageBox.Show("Error , try to pick a row .(Row will be in blue.)");
}
}
public static FormChangeMark GetInstanceOfFormChangeMark()
{
if (s_Instance == null)
{
s_Instance = new FormChangeMark();
}
return(s_Instance);
}