private void btn1_Click(object sender, EventArgs e)
{
int a = Convert.ToInt32(textBox1.Text);
int b = Convert.ToInt32(textBox2.Text);
string c;
c= (a + b).ToString();
MessageBox.Show(c);
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
}如textbox3是表示计算结果的文本框,怎样写能使结果显示在框中?
大师求解,谢谢!