Detect Key State Of Num Lock?
Feb 3, 2011
I'm trying to detect the state of num lock but haven't had any luck. using a windows 7 x64 machine.
Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As System.Windows.Forms.Keys) As Short
'num lock check timer
[Code]....
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Sep 2, 2009
How do I get the current state of Num Lock in VB.NET?
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Jun 29, 2009
how do you detect caps lock on in particular in a wpf application?
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Jun 3, 2011
I am looking into programming an application that detects noise levels. If the level is over a specific threshold it will lock a logged on user account. The idea behind this application is to reduce noise levels in a busy IT suite. My question is has anyone written anything similar and did it prove to be effective and is VB the best programming language for the job?
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Oct 23, 2010
My app is running in the tray and I want it to give a reminder to the user its there when they resume from a hibernation, sleep, or from being locked. I know how to handle the popup, but I cant find out anywhere how to detect that 'wake' status from those power saving modes.
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Jun 7, 2010
I'm trying to track down a problem on our test environment. Previously it was set to use InProc Session State Type, but I've added in the SQLServer type for one specific Web App. I did this because we use the SQLServer type in our production environment and I want our test env to match as closely as possible.
However, after changing it to SQLServer I do not get any errors when trying to store unserializable data in session like I would expect. It works just fine, even though I would think it shouldn't. I'm a relative newbie when it comes to configuring this, but from the various tutorials I googled, I thought I covered all the bases.I was wondering if there's any code snippets to verify which session state type an application is actively using.
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Dec 28, 2006
I was investigating on Google wether there was any sort of code that would return the current state of a laptop's 'lid'. I need to be able to find the state of the lid and be able to execute code before the defined event in Windows Power Management is executed.I have come across ExCreateCallback and stuff on MSDN however I wouldn't have the faintest on how to implement it into VB.
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Nov 24, 2010
border of that said window so the only place the mouse can't click the titlebar and the minimize,restore, and maximize button. The height of the titlebar depends on what OS the user is using so I'm having trouble because I can't give a definite value for this. How do I detect the height. and also for border i'm not sure if the borders have different widths with different operating systems. I'm using windows XP on classic mode, when I change to the themed mode, the height of the title bar changes so it won't work.
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May 27, 2009
Is there analogue of lock statement from c# in vb.net?
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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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Dec 15, 2011
VB.net how to lock a computer screen using a form
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Aug 23, 2010
How do I lock a row in MySQL and then only allow the app that locked it to change the values of that row?
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Dec 28, 2009
Wrote this code:
Function ReadRegistry(ByVal regType As String, ByVal RegPath As String, ByVal KeyName As String)
Dim regKey As RegistryKey
[Code].....
What I want to do is raise an error if I get passed a value that isn't listed in the case statement.. or it there a way to define it better?
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Sep 25, 2009
I have a form and its filled from a VIEW of two tables on SQL server. When its opened i dont want other users opening that customers details from either table.I know SQL itself prevents writes if its opened but i want to stop people opening the record in the first place.[code]...
I then tried writing these values to the db on the form loading but it doesent work - it just sends back NULLs. I tried the same code in the on load event into a button and it works fine there. So im thinking i should do this as a Trigger on SQL itself, but im unsure how i could get the users computername or Windows Login name, or even username from the front end im building.
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Dec 6, 2006
I am using XML files to store some iformation that are to be processed. I use this code to interact with the XML file:
Dim xmlDoc As New XmlDocumentxmlDoc.Load("theXMLFile")
Do XML stuff such as add elements...
xmlDoc.DocumentElement.AppendChild(oAlarm)xmlDoc.Save("theXMLFile")
What I want to do is to lock the file so that no other process can use the file. If a process wants to use the file, I also want it to wait and try again until file is available.
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Aug 7, 2007
how to lock PC using VB.net? So that any user cannot do anything on my PC?
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Oct 14, 2010
But not my application.A app i use refuses to be brought forward, so wondered if there was a way for a vb app to run in the bg that can force a specified application to stay on top, & even maybe set its screen position and lock it there???
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Mar 20, 2012
In my project i am using begin transaction commit or rollback changes. but this causes lock to the tables in that particular functionality.
So if the any other user does any other functionality those locked table are not available until the transaction is completed. I want to know if there is any alternative to transaction which insures data security but the tables are not locked out.
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Jun 21, 2011
Dim bmi As New BitmapImage(New Uri(fiInfo.FullName, UriKind.Absolute))
bmi.CacheOption = BitmapCacheOption.OnLoad
this does not Use OnLoad
[code].....
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Mar 29, 2011
how would i bypass the loader lock. I know there is a way to disable it but im not sure how
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May 15, 2010
This is a part of my project, my project basically uses a motion sensor to detect any intrusion. So one of the modules is to lock the PC on detection of an intruder. Is there a way to lock the PC using Visual Basic?(Because most of the other modules have been programmed in Visual Basic.) I am basically looking for source code that can implement something similar to "Windows button + L".
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Feb 23, 2012
I'm working on a small program to activate winlogon,and to automatically log out of my account, but I'm unsure how to implement this in code.
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Aug 15, 2011
I have a windowsform in visual studio 2008, I connect to a ms sql-server.On my form I have a datagridview who I use to enter data etc and save them to the database. I then have textboxes who shows the sum of the columns etc in the table abd save that value back to the database. but for instance if i put the cursor in row 2 of the datagrid the values in theese textboxes dissapear.What I want to know is if there is apossibility to lock the textbox to ex. table test, clomn x and row 1??
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Jan 24, 2012
I'm newbie in VB .Net.I do want to lock a textbox but I cannot supply the right code for it.
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Jun 8, 2011
I am using vb.net framework 3.5. I want to lock input devices like keyboard and mouse from my application. Is their is anyway using sendkeys or any method to lock?
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Jun 22, 2010
I need to lock label position. so, my label can't move at all.. now, i'm using label1.Enabled = False.. but, my label.forecolor become gray..
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Mar 8, 2010
can anybody told me how to lock remote computer using Vb.Net2005
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Jun 24, 2009
how do you lock a single file cuz people r accessing files that r private and help me with VB 2008 code
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Aug 27, 2010
I am getting this right after I bind grid. I called the db multiple times (no more than 5.) and I bound those result to a datatable and it then throws this error. I was not getting this error yesterday when i was running this program. And there doesnt seem to be anything I have not done before.
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Mar 9, 2009
1. I have to select the next invoice number from one table.
2. Then i have to insert this invoice number as it is in three other tables.
3. Then once i have done so i have to go and update the invoice number by +1 (increment by
1). And i have to do this for each row in the datatable.
During this whole period i do not want anyone to access (read or change) that invoice number. We can lock the table or row. Does not matter. How can i do it? I am not suppose to use store procedure. Lock table ... does not work. It is not an T-SQL stmet select invoice number with (readlock) ....... only works while this stement is runned. I want to have the table or row locked until i have done 1,2 and 3rd steps. I have seaching for a stamt in sql which will do this for me! But didnt find anything. All results point me to SP which i cannot use.
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