Wpf - Fire A Custom Event From A Child Window Back To Parent Window?
Feb 13, 2012
I am looking to close the application when I click a cancel button in a login page, but I don't want to do it in such a way that Window 2 closes itself, but by sending some notification to Main Window, and Main Window closes the application. Here's the code that I have so far:
(in loginPage)
Public Event CloseApp As EventHandler
Private Sub CancelButton_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles CancelButton.Click
[Code]....
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Dec 19, 2011
If I show a new non-modal child window using .Show(frmParent), and then the parent window is minimized, the child will get minimized automatically as well.
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Mar 4, 2010
I'm working on a sdi-like WPF application with VB as the code behind. Basically, I have a main window that has some tabs and a button that opens (shows) another child window. I need that child window to refer back to the parent main window and automatically bring it in focus and have a specific tab selected (via a button on that child). The child window is a separate class file with its own xaml and VB code in my project.In the child I tried using
My.Windows.MainWindow.myTabControl.ItemSelected = My.Windows.MainWindow.tabIWantSelected
My.Windows.MainWindow.Focus()
but this does not appear to work as the main window in the background doesn't appear to be referenced in this way. I can use My.[bla bla].Show() - but that creates a whole new instance of the main window on top of the old one. Activate() doesn't work either since the main window is already activated.It seems like a simple task but am I forced to use something like SetForegroundWindow()?
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Jul 9, 2011
I just downloaded that New Window Event for my web browser. It comes with the WebBrowserEx1 which I placed in my form. Does anyone know the code for the new window event to fire for this component?
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Apr 29, 2011
Here's an example of what I mean: I have Microsoft Word open. I click 'Save As' to open the SaveFileDialog. When I try to click back into Word the SvaeFileDialog window flashes and it plays a beep noise. More importantly, it doesn't let the main program gain focus whilst it's open.
[Code]...
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Aug 4, 2011
I am trying to create a simple parent-child form in VB2010. I use a datagridview for each table/datasource and each is bound to the paretn/child table and each table grid fills correctly. What I want is the parent-child relation to enforce filling the child table with only rows that fulfill the current row on the parent. I have created a DataRelation in the form load, but it will not permit a relation between tables in 2 different datasets. If I attempt to place both tables in a single dataset and define the PK-FK relation in the SQL Serve,r I cannot create 2 separate datagrids from the same dataset.
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Dec 6, 2009
how to disable parent window while child is open so the user cannot click any object in the parent window and to Force the user to interactive only with the child
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Oct 13, 2010
In my project i have one parent window form with one menu bar and one status bar. that is what i want is:when i show the child form to see in the status ber an icon relative to the child window.How i can do that?And if that can't be how i can see an icon in a task bar?
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Mar 19, 2012
I am making an address book for my final project in school, and have a few questions. In my address book, there is a feature to add groups so you can sort your contacts. The problem is, the add group feature is in a different form, I tried calling a procedure from the parent form to refresh all data but it does not work.[code]
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Mar 20, 2010
I am trying to find the handle of the child window for the Yes button in the User Account Control window so i can click it. This window has a structure with a few child windows with the same name.
Dim hwnd As IntPtr = FindWindow(Nothing, "User Account Control")
Dim hwnd2 As IntPtr = FindWindowEx(hwnd, 0, "DirectUIHWND", vbNullString)
Dim hwnd3 As IntPtr = FindWindowEx(hwnd2, 0, "CtrlNotifySink", vbNullString)
Dim hwnd4 As IntPtr = FindWindowEx(hwnd3, 0, "Button", "&Yes")
There are multiple CtrNotifySink with its own Button child window or other child windows. How do i search thru the different CtrNotifySink window to find the one that contain the Yes button so i can send a click to it? I do need to find it before i can send a click, right? because i try just sending it to the main window with sendmessage and nothing happen.I even try sending it directly to the handle found by spy++ of the yes button with bm click but nothing happen?
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Oct 12, 2010
I have create a project with one main form window and also i have to use a number of other forms as well. now i want to open these other forms inside the main window and not outside. I'm using Visual Studio .NET 2010 as developing environment.
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Aug 23, 2009
I have a 3rd party program that puts up a pop up box and asks the user for input. In Spy++ the original program (I'll refer to this as Window A from now on) is a top level window, and the popup (Window B) is also a parent window. However, when I use FindWindow(Nothing, "Captcha Challenge") it returns 0. I've also used a code snippet from the forums
[Code]....
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Nov 16, 2009
I want my ListBox control to respond dynamically to a change of selected item.However, "OnSelectedIndexChanged" fires an event only when AutoPostBack is set to true. Having a dozen of controls updating each time a user makes a change in selection insingle one is quite annoying and irritates a lot. Is it possible to enable
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May 22, 2012
I want to know In which case OnStop() of .NET Window Service will not fire? will it fire when computer sudden restart,power failure , Shutdown or any other conditions?
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Jan 23, 2012
How to catch the event of the window close button(red X button on window right top corner) in wpf form ? We have got the closing event, window unloaded event also, but we want to show a pop up if he clicks the close button of the wpf form.
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Mar 16, 2009
I have used timers in .Net for a long time now an never had this problem.Start timer to fire every 10 seconds that reads an object and updates the UI using a delegate.This works great until the form is minimized several times, then the timer thread seems to vanish.Anyone come across this before?
Obviously I can roll my own using a thread directly and sleeping it, however this seems like reinventing the wheel when a threading timer class exists already.
Code: Private Sub m_Tmr_Tick(ByVal state As Object)
[code].....
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Feb 10, 2012
I have a user control (SomeUserControl), that I am using in a Main Window. I write my application entirely on SomeUserControl, and Main Window is hosting SomeUserControl and nothing else.
Right now I have a shutdown button (in SomeUserControl), that is supposed to close the Main Window. The reason for this is that I do not want anything from SomeUserControl to close the application itself, but to fire an event from SomeUserControl, and Main Window receives it, and Main Window will close the application instead of SomeUserControl.
How do I do it? I am not familiar with the concept of creating and handling custom events, so if someone could explain it in words and in code as an example, I will be very grateful to you!
Edit: Here's my code so far.
(in Window 2)
Public Event CloseApp As EventHandler
Private Sub CancelButton_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles CancelButton.Click
DialogResult = False
[Code]....
I want to close the application when I click cancel in Window 2, but I don't want to do it in such a way that Window 2 closes itself, but by sending some notification to Main Window, and Main Window closes the application.
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Aug 25, 2010
I need a multiline TextBox which is always disabled, but it shouldn't paint itself in gray, but I want to keep its designer choosen color. I previously had the same requirement with an always-black Label (no multiline) and so I inherited from Label like:
Imports System.ComponentModel
Public Class LabelDisabled
Inherits Label
Sub New()
InitializeComponent()
Enabled = False
End Sub
[Code] .....
But this way, neither I can set the "real" Enabled property, I mean the backing field.
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Jan 31, 2012
I was trying to block the closing of a custom combo box popup window in my custom DataGrid. The popup window comes by pressing F4 or ALT+DOWN keys in my datagrid which is getting closed if I press the down arrow for the first time, after showing the first value in the combo box as selected. Next time onwards, if I press the F4 key and down arrow, I can move to any item in the popup window and select the item using keyboard and in that case, the popup window is not getting closed till I press the ENTER key or selection using the Mouse. Is there any specific reason for this behaviour or something is missing in my code part? [code]...
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Sep 2, 2010
I was trying to block the closing of a custom combo box popup window in my custom DataGrid. The popup window comes by pressing F4 or ALT+DOWN keys which is getting closed if I press the down arrow for the first time after showing the first value in the combo box as selected. Next time onwards, if I press the F4 key and down arrow, I can move to any item in the popup window and select the item using keyboard and in that case, the popup window is not getting closed till I press the ENTER key or selection using the Mouse.
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Dec 29, 2011
how to specify a custom icon for display in the toolbox window when you create your own custom control? Something other than the dreaded "gearbox" icon.
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May 2, 2012
How to send a message to parent window in VB .Net?In my VB .Net application, there are a few windows which pop up in order.Main form starts form1, form1 starts form2, and form2 starts form3.In form3, I have a button which calls "Jump to Main". Once I click this button,I want to it to close
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Jul 12, 2010
I have the following code in child window which is working but what I want to do is instead of using response.write I want to use label control or to display all the filename like this:
music.pdf, inventory.doc
My Ultimate goal is to pass the values in string (e.g.: "music.pdf, inventory.pdf" ) to the parent window. How do I do it?
Protected Sub btnUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnUpload.Click
Try
'' Get the HttpFileCollection
Dim hfc As HttpFileCollection = Request.Files
For i As Integer = 0 To hfc.Count - 1
[Code] .....
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May 19, 2009
(vbnet 2008, windows forms)I have a main form (not MDI) with a menu that will open another form as a window on top (I have already set the TopMost property to true). My problem is that it will set this window on top of everything that I open (any program). How can I set this window to be on top of just the main form? I guess I have to declare the main window as its parent, I tried the code below but it didn't work...
Code:
Private Sub FilterToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FilterToolStripMenuItem.Click
Dim frm As New frmFilter
[code]......
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Feb 10, 2010
I haven't programmed in Visual Basic before. I downloaded the 2008 Visual Basic and I'm trying to write something that activates the frontmost window of the parent process. I realize that there's a few steps... find the parent process, get its first window (z-axis wise), then raise that window even though it currently isn't the active program.
I've found some example code on the net, but none of it compiles, even code I found at Microsoft. I'm guessing that it's all an older syntax that's no longer supported. [code]...
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Oct 15, 2008
i am using vb2008: now i can find the parent window with this block of code
Private Sub Button11_Click_2(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
Dim theHandle As IntPtr
theHandle = FindWindow(Nothing, TextBox9.Text)
[code]....
i do know how to use sendkeys, but if i use that and click on something else while i send the keys it picks up that window and trys to send the keys there thats what i dont wantnow using the top block of code along with this module how can i get the childwindow with focus on the "Richcntl" box to send text to itin a diffent click button:in this block:
Private Sub Button13_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click
End Sub
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Mar 19, 2012
I would like to make a window for example (calculator window) and set its parent to my form
But I would like this to be able to be flexible to where I Just have to specify the Window's exe path and its parameters.
Example: (pathTo)explorer.exe -documents
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Oct 20, 2009
i've small problem in vb.net .i've mdi container form,in child form datagridview is there previoues,next buttons in parent form.
How to pass datagrid values to parent window?
i'm new to vb.net.Pls help me any one.
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Mar 17, 2008
In my example, Internet Explorer is the parent window. I just want to get the plain text from its child window. For that i need to get the handle of child window.
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Jan 3, 2012
I have a small and irritating problem.
I used the following code to captute and set a 3rd party application as a child of my VB application:
<CodeStart>
If
ofd.ShowDialog And
[Code]....
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