我有VS2015 Windows窗体,每当我点击X关闭应用程序时,它会提示我关闭它。当我按否时,弹出窗口将关闭。但是,当我按“是”时,它会弹出另一个窗口,并要求我关闭它。
我该如何解决这个问题?我想在第一个弹出窗口关闭我的表单。
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
const string closemsg = "Do you really want to close the program?";
const string exit = "Exit";
DialogResult dialog = MessageBox.Show(closemsg, exit, MessageBoxButtons.YesNo);
if (dialog == DialogResult.Yes)
{
Application.Exit();
}
else if (dialog == DialogResult.No)
{
e.Cancel = true;
}
}
答案 0 :(得分:2)
很简单。 删除Application.Exit();
Application.Exit()生成FormClosing事件。
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
const string closemsg = "Do you really want to close the program?";
const string exit = "Exit";
DialogResult dialog = MessageBox.Show(closemsg, exit, MessageBoxButtons.YesNo);
if (dialog == DialogResult.Yes)
{
//Remove Application.Exit();
//Application.Exit();
}
else if (dialog == DialogResult.No)
{
e.Cancel = true;
}
}
答案 1 :(得分:1)
然而,当我按下是时,它会弹出另一个窗口,并要求我关闭它。
原因是因为您的Form1_FormClosing
将再次被调用。尝试设置一个_isExiting
标志,您可以在输入时进行测试。
试试这个:
bool _isExiting;
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (_isExiting)
{
// whoops, been here already, time to go!
return;
}
const string closemsg = "Do you really want to close the program?";
const string exit = "Exit";
DialogResult dialog = MessageBox.Show(closemsg, exit, MessageBoxButtons.YesNo);
if (dialog == DialogResult.Yes)
{
_isExiting=true; // set flag here so we don't repeat this exercise again
Application.Exit();
}
else if (dialog == DialogResult.No)
{
e.Cancel = true;
}
}