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[英]C#: form.Close method, FormClosing event, and CloseReason event argument. Set custom CloseReason?
[英]C# form doesn't close on FormClosing event
在將以下代碼添加到后台代碼后,我的表單沒有關閉。
private void Form1_FormClosing(object sender, FormClosingEventArgs e) {
MyThreadingObj.Dispose();
}
聽起來像添加上述代碼會阻止您的Form
關閉。 如果是這樣,那么最可能的原因是MyTHreadingObj.Dispose()
語句引發異常。 嘗試將語句包裝在try / catch中,看看是否是這種情況
try {
MyThreadingObj.Dispose();
} catch ( Exception e ) {
Console.WriteLine(e);
}
protected override void OnFormClosing(FormClosingEventArgs e)
{
base.OnFormClosing(e);
if (PreClosingConfirmation() == System.Windows.Forms.DialogResult.Yes)
{
Dispose(true);
Application.Exit();
}
else
{
e.Cancel = true;
}
}
private DialogResult PreClosingConfirmation()
{
DialogResult res = System.Windows.Forms.MessageBox.Show(" Do you want to quit? ", "Quit...", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
return res;
}
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