If the user clicks on the overlay, I want the ChildWindow to automatically close and return the user to the main screen.
Is there a property that controls this? If not, is there a way to attach a click handler to the overlay?
Turns out you can get a reference to the overlay right after it is created. After that it is a simple matter of attaching the event handler.
private void Overlay_MouseButtonDown(object sender, MouseButtonEventArgs e)
{
this.Close();
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
var overlay = (Grid)GetTemplateChild("Overlay");
overlay.MouseLeftButtonDown += Overlay_MouseButtonDown;
overlay.MouseRightButtonDown += Overlay_MouseButtonDown;
}
Related
Is there a way to get OnItemRightTapped event on ListView or GridView that works exactly like ItemClick, except obviously react only on right tap?
You can add an event handler for mouse down and then determine the click source in the code:
private void listView_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.ChangedButton == MouseButton.Right)
{
// Do what u need to do here
}
else
e.Handled = true;
}
I was trying to show a form(FormChild), with some radio buttons in, just to select, close, and get the value of the selected radio button from the calling form(FormParent). On a click event handler for a Button in FormParent, I just did:
var formChild=newFormChild();
formChild.ShowDialog(this);
All was working great until I decided to handle the CheckedChanged event of one of the RadioButtons inside FormChild:
private void SomeRadioButton_CheckedChanged(object sender, EventArgs e)
{
Close();
}
Now the formChild.ShowDialog(this); did not showed formChild and formChild immediately returns DialogResult.Cancel.
Any explanation on this?
Thanks in advance
The lowest Tab Index radiobutton will be checked by default, If this event handler is assigned to that button it will cause the situation that you are describing.
You can either change your Tab Order or create a Boolean Flag that is set in your Forms Shown EventHandler to keep it from Triggering until you check it again.
public partial class Form1 : Form
{
bool initDone;
public Form1()
{
InitializeComponent();
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
if (initDone)
{
if (((RadioButton)sender).Checked == true)
{
Close();
}
}
}
private void Form1_Shown(object sender, EventArgs e)
{
initDone = true;
}
}
Is there anywhere if your code that sets the value of the RadioButton? If you programmatically set the "Checked" property of the RadioButton, it will fire the event.
In your situation, the event handler contains your Form.Close() so the form never gets the chance to be visible to the user.
Note: Setting the RadioButton.Checked as "true" in the designer will not fire the event.
Upon starting up my silverlight app a child window appears to prompt the user to login. Within in the window I have a username textbox that I want to be focused so that the user can begin typing without focusing it with the mouse first.
This seems like it should work:
public partial class LoginForm : ChildWindow
{
public LoginForm()
{
InitializeComponent();
}
private void ChildWindow_Loaded(object sender, RoutedEventArgs e)
{
txtUsername.Focus();
}
}
I noticed that the Load event happens before the window is rendered which might be the problem, however I don't see an event handler for Rendered or similar.
Edit: Forgot to mention this application is running in the browser.
You need set TabIndex on txtUsername with lower value than other controls on that child window.
Try this:
public partial class LoginForm : ChildWindow
{
public LoginForm()
{
InitializeComponent();
Loaded+=LoginFormLoaded;
}
private void LoginFormLoaded(object sender, RoutedEventArgs e)
{
txtUsername.Focus();
Loaded-=LoginFormLoaded;
}
}
update:
You can also add your event on your TextBox. the textbox has a Loaded event too. If you use this event, you are sure that the TextBox is loaded.
If you are running the application in the browser make sure that the silverlight plugin has focus before calling the focus method of the control.
private void ChildWindow_Loaded(object sender, RoutedEventArgs e)
{
HtmlPage.Plugin.Focus();
txtUsername.Focus();
}
This works on most browsers except I couldn't get it to work on Safari.
Here is something I use:
public partial class LoginForm : ChildWindow
{
public LoginForm()
{
InitializeComponent();
Loaded += (s, e) =>
{
txtUsername.Focus();
};
}
}
And in XAML set your TabIndex to 1
For some reason that I do not have time to figure out, the Child Window in the Silverlight SDK opens, animates, and the focus moves to some unknown place. Most of the solutions suggested on this thread do not work for me because the control receives focus briefly (you can see the focus hit the text box) and then the focus moves to somewhere else (I am guessing that the storyboard on the ChildWindow template has something to do with that). So, I figured out this work around that is actual code that has been implemented and has been proven to work:
public NewChildWindow()
{
InitializeComponent();
this.GotFocus += NewChildWindow_GotFocus;
}
private void NewChildWindow_GotFocus(object sender, RoutedEventArgs e)
{
this.GotFocus -= NewChildWindow_GotFocus;
txtBoxToFocusOn.Focus();
}
Make your textbox TabIndex="0" and in its Loaded event do the "YourtxtBox.Focus()"
Hi i have a tab load this usercontrol. when i wish to close this tab, i wish to call this cancelbutton_click event to pop up confirmation on closing, if OK, then close, if Cancel, the tab stays.
if i use Unloaded event, it will pop up twice before closing.
private void UserControl_Unloaded(object sender, RoutedEventArgs e)
{
cancelbutton_click(sender,null);
}
Cancel button:
private void cancelButton_Click(object sender, RoutedEventArgs e)
{
MessageBoxResult objResult = MessageBox.Show("\nAre you sure you want to cancel?", "Cancel Confirmation", MessageBoxButton.OKCancel);
if (objResult == MessageBoxResult.OK)
{
try
{
TabItem tabItem = parentWindow.FindTabItemByName(ControlType.BusinessesContractors.ToString(), false);
this.parentWindow.mainTabControl.Items.Remove(tabItem);
this.parentWindow.statusTextBlock.Text = "Ready";
}
catch (Exception ex)
{
}
}
how to resolve this? thanks
Unloaded is called when the control is already being removed, it's not an event you want to handle often, just create a button which is supposed to close the tab, handle it's click, check if the user wants to cancel via the dialogue and close the tab if he does not.
Is there anyway that a class can catch the last click in the application? Something like
public class MyClickManagerClass
{
public MyClickManagerClass()
{
// subscribe to a global click event
}
private void GlobalClickEventHandler(object sender, EventArgs e)
{
// do something with the click here
}
}
Thanks for your time!
If you only care to capture mouse clicks anywhere in a given Window, simply subscribing to the MouseDown or PreviewMouseDown at the window level does the trick.
If you really want it to be global to the application (and not just to the window), you should subscribe to the InputManager.PreProcessInput or InputManager.PostProcessInput event and watch for mouse events:
public MyClickManagerClass()
{
InputManager.Current.PreProcessInput += (sender, e) =>
{
if(e.StagingItem.Input is MouseButtonEventArgs)
GlobalClickEventHandler(sender,
(MouseButtonEventArgs)e.StagingItem.Input);
}
}
Note that "sender" will always be the InputManager but you can map coordinates to other controls with MouseEventArgs.GetPosition(visual).