When I'm changing windows(forms), my application's icon disappears from taskbar. So for opening the application, users need to click ALT+TAB to select the form which is hidden from taskbar. After users choose application, icon comes to taskbar again. I don't want my applcation icon disappears from taskbar.
My codes are below:
//Program.cs
[STAThread]
static void Main()
{
Application.Run(new LoginPage());
}
Login Page is application's first screen that gets username and password. After clicking submit button application is going to main page.
//LoginPage.cs
private void submitBtn_Click(object sender, EventArgs e)
{
MainPage mainPage= new MainPage();
mainPage.Show();
this.Hide();
}
Lets say I have a button on main page for going to another form. Here when I click the page1 button taskbar icon disappears.
//MainPage.cs
private void page1Btn_Click(object sender, EventArgs e)
{
Page1 page1 = new Page1();
page1.Show();
this.Hide();
}
After some research I found one solution for that but there is another problem which I cannot minimize the form correctly.
When I change the codes above with below
//MainPage.cs
private void page1Btn_Click(object sender, EventArgs e)
{
Page1 page1= new Page1();
page1.ShowInTaskbar = false;
page1.Owner = this;
page1.ShowDialog();
this.Hide();
}
Here, I also need to modify Page1 as below
//Page1.cs
private void Page1_FormClosed(object sender, FormClosedEventArgs e)
{
MainPage mainPage = new MainPage();
mainPage.Show();
}
Here I can successfully go to page1 step by step (without disappearing the taskbar icon). When I minimize the page1, it minimizes the application as expected but when I maximize the application from taskbar, I expect Page1 should maximizes but MainPage maximizes with an minimized Page one like below image.
I only want to correct these problems. I hope there is experts which experienced these things there.
Problem is solved.
The problem was, I was maximizing the form from properties of the page.
Instead of maximizing it from properties, I do it manually from Page Load and its solved.
this.Bounds = Screen.PrimaryScreen.WorkingArea;
In MetroFramework, I have the same problem. When my application starts (in the FORM_LOAD) , I programmatically maximize and the icon disappears. Checking the MetroFramework code, the problem is caused by ShadowType. If you change the ShadowType to None:
this.ShadowType= MetroFormShadowType.None;
the issue is resolved. I hope the solution works
Related
I have an issue that I am trying to resolve. I have two WPF windows. Those windows house the pages with content. My problem is not navigating page to page but rather window to window. here is an example of the code:
LoginPortal Design
<Grid>
<Frame x:Name="MainFrame" NavigationUIVisibility="Hidden"/>
</Grid>
LoginPortal Code
public LoginPortalMain()
{
InitializeComponent();
MainFrame.Navigate(new Uri("/Pages/LoginPortal.xaml", UriKind.RelativeOrAbsolute));
}
This is my Login portal that houses 4 buttons. Each button opens the second window which is houses several pages.
private void BtnSales_Click(object sender, RoutedEventArgs e)
{
var w = Application.Current.Windows[0];
w.Hide();
MainWindow mn = new MainWindow();
mn.Content = new SalesPage();
mn.Show();
}
When this button is clicked it opens the second WPF Window which is where several pages are housed. There is no problem with navigation. The problem starts when I wire the Closing event from the MainWindow to go back to the LoginPortalMain
private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
LoginPortalMain lgm = Application.Current.MainWindow as LoginPortalMain;
lgm.Show();
}
It then goes back to the start again. Now my problem is if I click on the same button again. It just duplicates everything. Then on closing anything it just adds new windows. If I then exit out of any window, it throws an error in picture below. My question is, is there a way to either dispose of the navigation once the MainWindow is closed. So there is no duplicate windows once you close the mainWindow a second time. I have used navigation before on a single window but not on multiple windows.
I may have to rethink this whole structure and use custom UserControls and figure out the animation sequence from Pages to UserControls. However, any help would be greatly appreciated.
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If you only want to be able to open one instance of the new window try showing and hiding a single window instance.
When the open window button is pressed create the window if need and show it.
private OtherWindow mOtherWindow;
private void OpenWindowButtonClick(object sender, RoutedEventArgs e)
{
mOtherWindow ??= new OtherWindow(); //initialize child window on first call
mOtherWindow.Show();
}
When the other window is closed hide it and cancel the close request. You could also reset the other window state here for the next time it is shown.
private void OtherWindowClosingEvent(object sender, System.ComponentModel.CancelEventArgs e)
{
((Window)sender).Hide();
Application.Current.MainWindow.Activate();
e.Cancel = true;
}
this is my frmMain image
I have been struggling with this all day. I have 7 buttons in my nav menu. I have my main form which all those buttons are placed and 7 forms that I will connect to my 7 buttons. 1 form for each button. When I go to another form the previous form I opened is still there. I tried using hide and close to exit the other forms but it was not working for me. I'm also using none border form
btnItems to frmItems
btnUsers to frmUsers
btnSuppliers to frmSuppliers
btnStocks to frmStocks (and so on with the 3 more buttons connected to different forms)
This is the code.
private void btnItems_Click(object sender, EventArgs e)
{frmItems op = new frmItems();
op.Show();
}
private void btnSuppliers_Click(object sender, EventArgs e)
{
frmSuppliers op = new frmSuppliers();
op.Show();
}
Although I don't understand EXACTLY what you are trying to accomplish, is showing the forms as a modal dialog an option? This would ensure that a window must be closed before allowing control to go back to the main form and allow another window to be opened.
private void btnSuppliers_Click(object sender, EventArgs e)
{
using (var op = new frmSuppliers())
op.ShowDialog(this);
}
How can I maximize the form at run time?
I have one panel in form 1 . I want to show form 2 (Rule_form) in this panel on button click.
I have write this code on button click:
Rule_form rule = new Rule_form();
rule.Show();
rule.TopLevel = false;
rule.WindowState = FormWindowState.Maximized;
rule.FormBorderStyle = FormBorderStyle.None;
internal_pannel.Controls.Add(rule);
But it doesn't work. When I click on button form 2 (Rule_form) opens with it's default size.
How can I maximize a form 2 (Rule_form) with panel size at start up?
I think you should run rule.Show(); at last.
Because now the form get showed before it is maximized.
That explains your problem.
What if you call rule.show after setting the windowstate or formborderstyle.
That is supposed to work.
You can also create an load event for the new form. And in this load event set the form to be maximized. Like this:
private void Rule_form_Load(object sender, System.EventArgs e)
{
this.WindowState = FormWindowState.Maximized;
}
My application uses ClickOnce technology for deployment. However I have problem when user starts using the application. The scenario for reproducing the problem is as follows:
User clicks on application's shortcut in order to run the application
ClickOnce's "Launching application" dialog box appears in order to check for updates
"Launching application" dialog box disappears
Splashscreen appears
Main window (login window) appears - however it's not active nor has a focus
Because main window is not active, user has to click on it before he/she can start typing username and password. How can I resolve this problem so the main window is active after it appears? I've tried the following code but it's not working:
protected override void OnInitialized(EventArgs e)
{
while (!this.IsFocused) { this.Focus(); WPFWaitForPriority.WaitForPriority(DispatcherPriority.Background); }
base.OnInitialized(e);
}
Most likely you're giving focus to the splash screen. So when it closes nothing has focus any longer. After closing the form call the Select Method on the control you want to have focus(the username textbox i'm guessing).
Select for Focus
try this code:
Pseudo code:
OnShown
this.focus
I mean.
Use diffrent event.
I have a WPF / ClickOnce application and don't have the same problem. I don't use the StartupUri of App.xaml, I manually show the login window instead as follows in App.xaml.cs:
protected override void OnStartup(StartupEventArgs e)
{
this.DispatcherUnhandledException += new System.Windows.Threading.DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException);
this.Exit += new ExitEventHandler(App_Exit);
base.OnStartup(e);
ShowLogin();
}
private MainWindow _mainWindow;
private void ShowLogin()
{
_mainWindow = new MainWindow(delegate()
{
//.......
});
_mainWindow.Closed += new EventHandler(_mainWindow_Closed);
this.MainWindow = _mainWindow;
this.MainWindow.Show();
}
As per my understanding you can programatically trigger click event once inside constructor .
How about LoginForm.Activate() after the splash screen is closed and the LoginForm is displayed?
Maybe try to get focus on TextBox on that form. Login name for example.
I think OnInitialized event may be too early. OnShown should be good.
Are you using Visual Studio? I know if you go to the form properties under the project tab, you can specify the start up object. Perhaps you can specify your main form and the splashscreen can load in front of it.
have you tried:
protected override void OnInitialized(EventArgs e)
{
while (this.CanFocus) { this.Focus(); WPFWaitForPriority.WaitForPriority(DispatcherPriority.Background); }
base.OnInitialized(e);
}
I'm encountering strange behavior with forms on a c# 3.5 app. On a button click, my form1 hides itself, creates a new form2, and shows form2. Form1 also contains the event method triggered when form2 closes. Here's the code inside Form1:
Form2 form2;
void button1_Click(object sender, EventArgs e)
{
this.Hide();
form2 = new form2();
form2.Show();
form2.FormClosed += new FormClosedEventHandler(form2_FormClosed);
}
void form2_FormClosed(object sender, FormClosedEventArgs e)
{
form2.Dispose();
form2 = null;
this.Show();
}
Now, my problem is that sometimes when I open form2 (hiding form1), or when I close form2 (showing form1), the new form will come up on the screen for a blink and then hide itself. It's still open and I can click it from the taskbar to show it again, but the window itself is sent behind any other open windows. It looks like it opens up but minimizes instantly.
This behavior occurs randomly. Sometimes forms will open up and hide without a problem, but sometimes they'll lose focus over another window. I've tried using focus(), activate(), and topmost but all have failed to prevent the sudden hiding.
Does anyone know why is this happening and how to fix it?
Thanks.
You hide your form too soon. For a brief moment, your app has no window that can contain the focus. That forces Windows to go hunting for another window to give the focus to, it will pick one from another application. That window will now be the foreground window, your second form will not get the focus and appear lower in the Z-order. The fix is simple:
void button1_Click(object sender, EventArgs e)
{
form2 = new form2();
form2.Show();
form2.FormClosed += new FormClosedEventHandler(form2_FormClosed);
this.Hide(); // Moved
}