private void removeToolStripMenuItem_Click(object sender, EventArgs e)
{
toolStripStatusLabel1.Text = "Deleting ...";
string str = Upd();
Form2 form2 = new Form2(str);
form2.StartPosition = FormStartPosition.CenterParent;
form2.ShowDialog(this);
toolStripStatusLabel1.Text = "Deletion canceled";
if (form2.DialogResult == DialogResult.OK)
{
S.Del(form2.Res());
toolStripStatusLabel1.Text = "The interval was successfully deleted";
UpdLast();
}
}