private void IncomeToolStripMenuItem_Click(object sender, EventArgs e)
{
if (income == null)
{
income = new Income(name);
income.MdiParent = this;
income.Show();
}
else if (pay == null)
{
pay = new payment();
pay.MdiParent = this;
pay.Show();
}
}
private void toolStripButton2_Click(object sender, EventArgs e)
{
pay = new payment();
pay.MdiParent = this;
pay.Show();
}