01windows窗體程式學習

靜態用戶名和密碼的登錄練習

private void button2_Click(object sender, EventArgs e)   
{

textUser.Text = Convert.ToString(textUser.Text);
textBox2.Text = textBox2.Text.ToString();
if (textUser.Text == "admin" && textBox2.Text == "111111")
{
MessageBox.Show("登錄成功");
}
else
{
MessageBox.Show("用戶名或密碼錯誤");
}

}

窗體關閉消息提示的練習

private void Form2_FormClosing(object sender, FormClosingEventArgs e)
{
DialogResult re = MessageBox.Show("確定關閉？","消息",MessageBoxButtons.YesNo);//是否關閉消息提示框
if (re == DialogResult.No)
{
e.Cancel = true; //關閉
}
else
{
e.Cancel = false; //不關閉
}
}