private void button2_Click(object sender, EventArgs e)
{
insert.HelloWord ih = new insert.HelloWord();
label4.Text = ih.add((int)numericUpDown1.Value, (int)numericUpDown2.Value).ToString();
}
private void button1_Click(object sender, EventArgs e)
{
insert.HelloWord ih = new insert.HelloWord();
label1.Text = ih.HelloWorld(textBox1.Text, textBox2.Text).ToString();
}
