private void listViewGroup_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewGroup.SelectedItems.Count == 1)
{
GroupsSet groupset = listViewGroup.SelectedItems[0].Tag as GroupsSet;
textBoxGroup.Text = groupset.Name;
}
else
{
textBoxGroup.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewGroup.SelectedItems.Count == 1)
{
GroupsSet groupset = listViewGroup.SelectedItems[0].Tag as GroupsSet;
Program.EduDb.GroupsSet.Remove(groupset);
Program.EduDb.SaveChanges();
ShowGroups();
}
textBoxGroup.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
try
{
GroupsSet groupset = new GroupsSet();
if (textBoxGroup.Text != "")
{
groupset.Name = textBoxGroup.Text;
}
Program.EduDb.GroupsSet.Add(groupset);
Program.EduDb.SaveChanges();
}
catch
{
{ MessageBox.Show("Данные не выбраны", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
}
ShowGroups();
}
private void buttonEdit_Click(object sender, EventArgs e)
{
if (textBoxGroup.Text != "")
{
if (listViewGroup.SelectedItems.Count == 1)
{
GroupsSet groupset = listViewGroup.SelectedItems[0].Tag as GroupsSet;
if (textBoxGroup.Text != "")
{
groupset.Name = textBoxGroup.Text;
}
Program.EduDb.SaveChanges();
ShowGroups();
}
}
else
{
MessageBox.Show("Данные не выбраны", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}