作业one
2018-10-17 本文已影响0人
零二幺五
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text = "你好"; //在文本框中显示你好
}
private void button2_Click(object sender, EventArgs e)
{
textBox1.Text = ""; //清除文本框内容
}
private void button3_Click(object sender, EventArgs e)
{
MessageBox.Show("你好你好你好你好"); //弹窗显示你好你好你好你好
}
end
