// button 5 private void button12_Click(object sender, EventArgs e) { UitlityClass.AppendToTextBox(textBox1, 5); //textBox1.Text = textBox1.Text + 5; }
// button 5 private void button12_Click(object sender, EventArgs e) { UitlityClass.AppendToTextBox(textBox1, 5); //textBox1.Text = textBox1.Text + 5; }