private void p7_Click(object sender, EventArgs e)
{
int i = 0;
while (i <= 1)
{
sel s = new sel(out p7_s, out p7_c);
if (i == 0)
{
s.ShowDialog();
}
if (p7_s == "null" && p7_c == "null" || p7_s == null && p7_c == null || p7_s == "null" || p7_c == "null" || p7_s == null || p7_c == null || p7_s == "" || p7_c == "")
{
p7.Text = "-";
}
else
{
p7.Text = p7_s + "-" + p7_c;
}
i++;
}
}
cmd2 = new SqlCommand(sel, obj.con);
