的WinForms表格不会关闭在C#按X或关闭() [英] WinForms Form won't close on pressing X or Close() in C#
问题描述
我在与WinForm的一点奇怪的问题,这似乎拒绝关闭了一些奇怪的原因。我有很简单的GUI有时不为我反应过来按X,或当我使用事件上的按钮甚至达到关闭()
和无助..
私人无效buttonZapisz_Click(对象发件人,EventArgs五){
串plik = textBoxDokumentDoZaladowania.Text;
如果(File.Exists(plik)){
线延长= Path.GetExtension(plik);
串nazwaPliku = Path.GetFileName(plik);
SqlMethods.databaseFilePut(plik,comboBoxTypDokumentu.Text,textBoxKomentarz.Text,sKlienciID,sPortfelID,推广,nazwaPliku);
关闭();
}
}
有没有分配给 FormClosed
或的FormClosing
。所以,我怎么能找出什么是错的。有时,GUI被加载后,X将工作,但之后我按按钮
来保存一些东西到数据库达到关闭()在按钮的事件,它仍然是可见的,所以没有任何。不能用X,也不ALT + F4。我可以去周围GUI和选择组合框
其它数值没有问题。
我把GUI是这样的:
私人无效contextMenuDokumentyDodaj_Click(对象发件人,EventArgs五){
VAR LV =(ListView控件)contextMenuDokumenty.SourceControl;
串varPortfelID = Locale.ustalDaneListViewKolumny(listViewNumeryUmow,0);
串varKlienciID = Locale.ustalDaneListViewKolumny(listViewKlienci,0);
如果(LV == listViewDokumentyPerKlient){
如果(varKlienciID =!){
变种dokumenty =新DocumentsGui(varKlienciID);
dokumenty.Show();
dokumenty.FormClosed + = varDocumentsGuiKlienci_FormClosed;
}
}否则如果(LV == listViewDokumentyPerPortfel){
如果(varPortfelID =!&放大器;&安培;!varKlienciID =){
变种dokumenty =新DocumentsGui (varKlienciID,varPortfelID);
dokumenty.Show();
dokumenty.FormClosed + = varDocumentsGuiPortfele_FormClosed;
}
}
}
虽然我不能关闭GUI我可以在主界面的工作没有问题了。我可以打开相同的GUI并打开新的GUI后,我可以很快将其关闭。 GUI是很简单的用几个组合框
,文本框
和一个 EditButton
从DevExpress的
编辑: varDocumentsGuiPortfele_FormClosed代码可以让我更新的GUI(重装ListView的具体情况取决于用户是在目前如此)。
私人无效varDocumentsGuiPortfele_FormClosed(对象发件人,FormClosedEventArgs E){
的TabControl varTabControl = tabControlKlientPortfele;
如果(varTabControl.TabPages.IndexOf(tabPageDokumentyPerKlient)== varTabControl.SelectedIndex){
loadTabControlKlientPortfeleBezZmianyUmowy();
}
}
这段代码粘贴到你的表单类:
保护覆盖无效OnFormClosing(FormClosingEventArgs E){
é。取消= FALSE;
base.OnFormClosing(E);
}
当这样的作品,你要找出为什么你已经验证事件处理程序不想被关闭的形式。
您想验证下一件事情就是调试+异常,剔为CLR异常的抛出该异常框。这可以确保你不下咽,防止形式从闭合异常。或者更糟的是,操作系统吞咽异常,一个讨厌Windows 7的问题。
I'm having a bit weird problem with WinForm which seems to refuse to close for some weird reason. I've got very simple gui which sometimes doesn't react for me pressing X or when i use events on buttons it even reaches Close()
and does nothing..
private void buttonZapisz_Click(object sender, EventArgs e) {
string plik = textBoxDokumentDoZaladowania.Text;
if (File.Exists(plik)) {
string extension = Path.GetExtension(plik);
string nazwaPliku = Path.GetFileName(plik);
SqlMethods.databaseFilePut(plik, comboBoxTypDokumentu.Text, textBoxKomentarz.Text, sKlienciID, sPortfelID, extension, nazwaPliku);
Close();
}
}
There are no events assigned to FormClosed
or FormClosing
. So how can I find out what's wrong. Sometimes X will work after the GUI is loaded but after i press Button
to save some stuff to database it reaches Close() in that button event and it still is visible and does nothing. Can't use X, nor ALT+F4. I can go around GUI and choose other values for ComboBox
without problem.
I call GUI like this:
private void contextMenuDokumentyDodaj_Click(object sender, EventArgs e) {
var lv = (ListView) contextMenuDokumenty.SourceControl;
string varPortfelID = Locale.ustalDaneListViewKolumny(listViewNumeryUmow, 0);
string varKlienciID = Locale.ustalDaneListViewKolumny(listViewKlienci, 0);
if (lv == listViewDokumentyPerKlient) {
if (varKlienciID != "") {
var dokumenty = new DocumentsGui(varKlienciID);
dokumenty.Show();
dokumenty.FormClosed += varDocumentsGuiKlienci_FormClosed;
}
} else if (lv == listViewDokumentyPerPortfel) {
if (varPortfelID != "" && varKlienciID != "") {
var dokumenty = new DocumentsGui(varKlienciID, varPortfelID);
dokumenty.Show();
dokumenty.FormClosed += varDocumentsGuiPortfele_FormClosed;
}
}
}
While I can't close GUI i can work on the main gui without problem too. I can open up same GUI and after opening new GUI i can quickly close it. GUI is very simple with few ComboBoxes
,TextBoxes
and one EditButton
from Devexpress.
Edit: varDocumentsGuiPortfele_FormClosed code allows me to refresh GUI (reload ListView's depending on where the user is on now).
private void varDocumentsGuiPortfele_FormClosed(object sender, FormClosedEventArgs e) {
TabControl varTabControl = tabControlKlientPortfele;
if (varTabControl.TabPages.IndexOf(tabPageDokumentyPerKlient) == varTabControl.SelectedIndex) {
loadTabControlKlientPortfeleBezZmianyUmowy();
}
}
Paste this code into your form classes:
protected override void OnFormClosing(FormClosingEventArgs e) {
e.Cancel = false;
base.OnFormClosing(e);
}
When that works, you want to find out why you have Validating event handlers that don't want the form to be closed.
Next thing you want to verify is Debug + Exceptions, tick the Thrown box for CLR Exceptions. This makes sure you don't swallow an exception that prevents a form from closing. Or worse, the operating system swallowing the exception, a nasty Windows 7 problem.
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