Open A WPF Window In Its Own Thread Then Close It?
Sep 16, 2010
I am trying to give some user entertainment, and show a "please wait" window, with Marquee, during the loading of a separate complex Window. I am attempting to do this by loading the Window in a new thread, like this:
Public Function ShowPleaseWait() As System.Threading.Thread
Dim PleaseWait As New System.Threading.Thread(AddressOf LoadPleaseWait)
PleaseWait.SetApartmentState(System.Threading.ApartmentState.STA)
[code]....
In the calling code, it calls ShowPleaseWait and saves the Thread for later.. To close the window, it calls Thread.Abort, on the saved thread. This in turn will causes it to enter the Catch. I have tried, many different ways, with and without the catch.This works incredibly, the first time it is called. However, additional calls will fail at window.Show() with the exception: The calling thread cannot access this object because a different thread owns it..This really puzzles me as the window was created one line above the call to window.Show and is local. How is it owned by a different thread? How can I fix this?
I am having a difficulty in this login form that I have made. The same as the premade template login in VB 2008 which I am using right now.Here's what happens when I run the program Log in form open > Log in successful > Main window appears *The login form still does not disappear.
I tried hiding it via me.hide() Log in form open > log in successful > Main window appears > log in form disappear.*Now the problem is that I cant close the whole application because the login form is still there only hidden. Again I tried putting in the "EXIT" button the code me.close() login.close()Log in form open > log in successful > Main window appears > log in form disappears > Exit application *Now everything seems to be ok now and then I found another problem.Instead of clicking the exit button I tried clicking the X button on the main window. There I found out that it only closes the main window. Therefore not closing the whole application because the login form is still hidden.
how to raise the mouse leave and mouse hover events for VB when i place my mouse cursor over the button.
When my mouse cursor is over the buttons, it will raise the mouse hover event and open the form, then when the mouse leaves the button, it will close the form upon raising the mouse leave event.
but currently, When i excute this two events, the for will open and close very,very fast. so fast that it is like spamming the VB.
So i am wondering how to change the code that i have to excecute the event one time every time the mouse is over the button which is created at run time.
the codes to execute these two events are:
Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) For Each ctl As Control In PictureBox1.Controls
[URL] I have tried heslacher's method which is Hi clzanas, you problems had been the result of calling a for each loop inside the events. If you only want for the button you hoover / leave to call the ShowDetails.Open/close, then you can take the code below:
Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs) If TypeOf sender Is Button Then ShowDetails.Close()
[code]....
But i got the same results as my previous code, resulting in the form opening and closing so fast that it is like spamming the window.
if you guys have used office 2003 or better( i am sure all) then you would have seen that when the help window open it causes the active windows say of MS WORD to change accordingly so that this help windows fits with it along the right side and this functionality i want to implement in my VB windows application and have no idea how to do it Also i have seen this feature in GOOGLE DESKTOP GADGETS...
i want to implement that when my application opens which ever is the active window( of any application) snaps to the left and allows my application to fir in the right hand side i am developing my application in VS 2005 using Visual Basic.
Excuse me for posting this, but I have searched both Google along with this forum before asking this question, maybe I'm not using the right keywords but I apologize if it's easy to find.I would like to know how one could close a third-party window (application) if a specified string was found in the window title.
In a program I'm working on, I want a "Loading..." dialog to close when it can't log in to a site using the username and password provided by the user. Basically, I have the code set up right because the function it is supposed to carry out when that occurs does work, but for some reason it ends up in some really weird stuff happening. In the Loading form, I have it set to do "Form1.Show()" and then "Me.Close()", assuming it would simply show the login form and then close the Loading form. However, when this happens, the Loading form closes, and then for only an instant Form1 shows, and then the Loading form shows and Form1 closes. This happens forever until I stop the debugging, and I can't seem to figure out why. Am I using the wrong method? What exactly does Me.Close() do anyways? All I want to do is close the form and open another
My routine to check for updates is run as a separate process. Exiting the application is required to update, so a dialog asks the user, when an update is found, if they want to exit now. f they do, the code (from the update thread) calls Application.Exit().However, if the FormClosed event of any form that needs to be closed needs to access its controls, an invalid cross-thread operation is detected (which sounds pretty logical).
In my program, I have a timer with a inteval set to 1000ms. The timer is executing a MySQL-command, and right now I'm opening and closing the connection each time.
I am trying to pass query string from one page to popup window as follow:
Dim popupScript As String = "window.open('cFinder.aspx?cName=" & c_TextBox.Text & "','', 'width=420,height=200,menubar=no,scrollbars=yes');" If (Not Page.ClientScript.IsStartupScriptRegistered("popup")) Then
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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.
When I run project splashscreen is popup and then Logon window is run. But unfortunately when Logon window is run the splashscreen still open like maximized window and I cannot see Logon window. How to fix that problem?
i am having a thread to keep the application in sleep for some time after the application process a data.
[Code]....
Currently, the application gets hanged if i press close button when thread.sleep() is running. How can i make the close button to close the application even when the thread.sleep is running.
Private Sub LinkClicked(ByVal sender As Object, ByVal e As EventArgs) Dim link As HtmlElement = WebBrowser1.Document.ActiveElement Dim url As String = link.GetAttribute("href") [code]...
Okay so here's the question how do I get the links that open in a new window to open in my main webbrowser control. The above code does some, but it's not fool proof.
I actually have gotten the events firing like I expect except for trying to close the dialog window.
Background: I have a wrapper around my "Jabber Client" that sets the delegates for the client wrapper and basically generates a messageProcess event. This event is wired in the main program Class[code]...
I like to open a file. The open option should be shown in a separate window. My code works fine but the open window is not displaying to open a file. Here is the code:
I have a project that is built in VB.Net 2010 and WPF 4. I have an option to return to a sign-in screen, yet this option can only be accessed from a separate (quit confirmation) window. This function can be called when one of about a hundred windows are open behind the quit confirmation window.
Within my program, I have identified a process via System.Diagnostics.Processand.GetProcesses. Now I need to close one and only one of its windows whose window title i know. How do I do that?
I am using the code below to download an Excel file. Once the Response.End() call runs, I want to close window. However, this isn't happening.
Code I have so far below. 'Write it back to the client Dim filename As String = "FullExtract_" & Now.Year.ToString & Now.Month.ToString & Now.Day.ToString & ".xlsx" Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" Response.AddHeader("content-disposition", "attachment; filename=" & filename) Response.BinaryWrite(pck.GetAsByteArray()) [Code] ..... How do I close the window?
