How To Lock Or Suspend Form While Doing An Operation
Dec 15, 2009
how to lock or suspend the form when i call another form and until that is finished this form should be locked.example: i got frmAddEditClient form and frmViewClients as another form, now i got list of clients in frmViewClients and i will select a client i would like to edit the client profile ( for which fuction is defined in frmAddEditClients) so on click of btnEdit in frmViewClients form i place code to [code]now i got everything working fine but i shud make the frmViewClient form to lock so that untill edit operation is done user should not change anything i.e is not selecting other ClientID. in the frmViewClient form.Once edit is done frmViewClient is unlocked and then clientId is refreshed.
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Jan 23, 2009
Basically,I had a button in my form1,when I click it,then form2 will be display...Now I would like to lock form2 until a button in form2 had been clicked,then only I can do anything in other forms...I means form2 must be closed before I can remain to form1.
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Jul 24, 2009
I have my main form then a progress bar form that is shown when the program is running. I simply want to keep the progress bar form on top of the other form and make the other form so it can't be changed.
I've tried form2.showdialog, but that stops the code in the main form from running so it's no good.
form2.show(me) just keeps form2 ontop of form1
me.topmost in form2 does the same as the last thing
setting the form1.enabled = false isn't something I want to do since you can't even move the form when it's like that
So really I'm at a complete loss here
also how can I get the progress to start in the center of form1? There is a setting in the form properties but is doesn't seem to work.
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Jun 21, 2008
after i set the windows form lock to yes and press f5 fordebug mode , i can still drag the form around the screen
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Apr 5, 2012
how to lock keyboard in form have controls?
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Dec 28, 2010
recently I've been searching for a way to disable the screen background and give focus only to my loaded form
for example
my form loads a "enter password" box, and I would like the screen to lock not sure how to describe actually, but I can show you a example of how UAC does it
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Mar 25, 2009
My software has a main form with two panels. One panel (pnlToolbar) has the navigation controls. The second panel (pnlSubForm) holds the sub-form as selected by the user from the navigation controls. There is a sub-sub-form which is called using the following code
[Code]....
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Oct 22, 2010
i have tried sendkeys but it locks my computer
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Oct 12, 2010
I want to lock my form to be full screen, and not allow the user to move it. For the form, I set
[Code]...
The form is full screen, but I can shift the location. I do have a dual screen system. The application goes full screen on the left most screen. This does this inside the development environment and using the EXE. What am I missing? I thought Locked is suppose to prevent the form from moving.
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Sep 29, 2005
How can I toggle capslock? Visual basic 2005. Windows XP. I'd like to capslock on when the form load. This code doesn't work:
Public Class Form1
Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Call keybd_event(System.Windows.Forms.Keys.CapsLock, &H14, 1, 0)
Call keybd_event(System.Windows.Forms.Keys.CapsLock, &H14, 3, 0)
End Sub
End ClassThe error is: PinvokeStackImbalance was detected.
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Jun 8, 2010
I have a Dialog which I'm calling via Loading.Show()Can I lock the position and location to the parent form? In such a way so if the parent is minimised or moved, the child will stay centred to the parent?
I was using ShowDialog() but this obviously stops the parent from being accessible. This is being used to display a progress gif. (Child is 50% opacity)
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Feb 18, 2011
1. I have a program and I want it, when it's lunched it comes at the center (I done that already) now what I want is to lock it at the center and could not be move all around the screen.
2. The other thing is that in my program I have a Webbrowser and the images are not showing at all. To make the picture visible I have to right click the image and click SHOW IMAGE. Till yesterday the image was showing.
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Jan 25, 2009
How do you lock the size of a form so the user can't resize it?
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May 28, 2009
i try to make an application that can communicate with the door magnetic device. So, when the visitor come to my house, i can control the door OPEN or LOCK using my PC. I;ve created a window form using VB.NET with button "OPEN" and "LOCK". Can anyone provide me some advise how to do this, or with some source code together found in other website?
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Mar 10, 2009
Can i automatically turn on or activate the CAPS Lock key when the form loads?
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Jan 14, 2012
Is there a way for suspend a process using vb.net. For example, while my program running background, it should wait for other programs (like X.exe) run and suspend them. With my permission (X.exe) will continue to do its job. If i reject, then terminate them.
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Aug 31, 2011
Is it possible in visual basic to suspend and resume processes. As in entirely pause a process (threads)?I mean an external thread. I'm using Visual Basic 2010 Express btw.
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Jun 22, 2010
I have a a main thread and another background thread that does some work (see below).I want to do something within my worker thread and then wait until some other event happens in the main thread before continuing. How do I do this? I thought I could use ManualResetEvent but I can't get it to work properly. I'm a bit confused about the Set, Reset, WaitOne methods and where exactly I should call them from.When the worker thread is suspended it shouldn't affect the main thread.
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System. EventArgs) Handles MyBase.Load
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[code]....
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Jul 1, 2011
I am trying to use a separate thread to handle specific events in VB.Net. The idea being that I do not want the main application to be held up if a particular event handler takes awhile to finish. How do I get my main thread loop to suspend the thread while allowing it to handle events when they occur?When I create a Windows Forms application, there is a UI thread that handles the UI events. I do not imagine that this thread is continuously polling some variable to see if someone has pressed a button. I imagine the thread is suspended until the OS tells it there is something to do. I was trying to figure out how to ensure that my event handlers were not being executed by the UI thread. From what I have read, I can do this by raising the events from a different thread. But what does that thread do while it is waiting for other events, just exit?
I wanted to know how to create a thread that works like the UI thread, only it processes the events I want it to process. I am not sure how events work in .Net. I understand that event handlers are run on the thread that raises the event. I believe that .Net allocates threads from some thread pool to process events such as timer events. I am not clear on how it works, though, and what those threads are doing when they are not handling events.
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Jul 16, 2010
Ive got a container with a bunch of child textboxes stacked using dock top. My code updates the textboxes and they vertically expand/contract etc. I'm thinking that my code might run faster if I turn off the layout refreshing until all the updates to the textboxes are done.
I'm getting confused with what I'm reading about suspend/resume layout - do I need to suspend for ALL the child controls, then go through them all at the end and Resume individually?
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Jan 4, 2012
I'm trying to convert code from Delphi to .Net. I'm stuck on one line:
//Delphi code ss := Copy(ss, Length(ss), 1) + Copy(ss, 1,Length(ss) - 1); 'vb.net code ss = ss.Substring(0, ss.Length - 1) + ss.Substring(1, ss.Length - 1)
Delphi combines the two substrings, while .Net just concatenate them like a copy.
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Sep 11, 2009
I m make search file project. In This Project I Search All File From Drive. ( *.* )When i Press Button For Search, Its Still Hand For Few Seconds Or Minutes When Search Completed its Normal. 1. How to Resolve its Hanging. 2. Can I Add Progress-bar For This Action. [Code]
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Nov 11, 2009
I have created a windows service in C# .net and now I want it to alert me if its going to shutdown. For this I make use of Dispose/Unload events but now I want if the services are stopping due to system shutdown process it will alert me.
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Jun 16, 2010
I am looking to introduce a suspend and a resume feature into my program however [code] is there any way to introduce this feature..
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Jun 3, 2012
Looking for a solution to pause and resume a thread. When I use suspend and resume it says its no longer supported. Here is the code. I'm just trying to get it to cycle between two "do until" events.
[Code]...
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Mar 15, 2012
I have a DataGridView that uses a BindingSource that has a DataTable as it's DataSource. If I filter the DataGridView by using the BindingSource filter on a particular column, then I change a cell value in that same column the row disappears. For example, if I filter my "Shipped" column which contains CheckBoxes to only show True and then I set one of the CheckBoxes to False the row disappears from the DataGridView.
I do not want the row to disappear until the BindingSource filter is changed or removed. How can I suspend the BindingSource filter and then resume the filter if the filter has changed? I want it to work like MS Excel's filter. If you filter a column in Excel to only show cells that equal "Apple", then change the cell to "Banana" the row still shows, but if you change the filter the "Banana" row is removed. This how I want my BindingSource filter to work.
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Jan 8, 2012
[code]I get an error that the connection to the IMAP server has disconnected because the suspend event is not triggered until the computer wakes. How do I get the trigger before the computer sleeps?
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Nov 13, 2009
I am running several long synchronous operations in my VB.NET application that can take several minutes each to complete. During these operations the form will turn white and the title bar will show "Not Responding" and some users may close the application thinking it has stopped working when in fact it is still running.I am pretty sure I need to multithread to do this, but my initial efforts have been unsuccessful. What is the easiest way to refresh my form every couple of seconds or so while these long operations are running?
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Aug 16, 2010
I am having a problem with a download form I am trying to make. This downloader works fine for small files but once it gets to, 20,969KB it errors, "Arithmetic operation resulted in an overflow". I downloaded this code about a year ago and used it in all my applications for my auto updater I have coded for my applications....
Downlaoder code...
Imports System.Net
Imports System.IO
Imports test_app.dloadinfo
Public Class Dloader
Dim whereToSave As String 'Where the program save the file
[Code] .....
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Oct 13, 2009
I need a function to Hide a form in cross -thread operation. I write this code but it close the form and not only hide it:
Dim objHideMyForm As delegateUpdateApps = AddressOf HideFree
Private Sub HideFree()
Try
Me.Hide()
[code]....
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