Question

private void button2_Click(object sender, EventArgs e) { if (textBox1.Text.Trim() == "") { MessageBo

如何用C#将上面添加的内容显示出来

Answer 1

private void button2_Click(object sender, EventArgs e)
{
if (textBox1.Text.Trim() == "")
MessageBox.Show("没有任何字符");
else
MessageBox.Show(textBox1.Text.Trim());
}