1. 准备好样式
样式链接地址:C#创建Windows窗体应用程序实例1 https://blog.csdn.net/qq_45037155/article/details/124005398

2. 一个参数
? MessageBox.Show(textBox1.Text + " 登录成功!");
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(textBox1.Text + " 登录成功!");
}

3. 二个参数
? MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒");
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒");
}

4. 三个参数?
MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒",MessageBoxButtons.YesNo);
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒",MessageBoxButtons.YesNo);
}

5. 四个参数?
MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒",MessageBoxButtons.YesNo,MessageBoxIcon.Question);
private void button1_Click(object sender, EventArgs e)
{
MessageBox.Show(textBox1.Text + " 登录成功!","登录提醒",MessageBoxButtons.YesNo,MessageBoxIcon.Question);
}

|