Detecting When The Tab Key Is Pressed In A Textbox?
Dec 22, 2011
I have a series of textboxes that I need the user to be able to navigate. When the last textbox in the series is filled I want the cursor to go to the first box in the series and have the next row in the datagridview selected. The problem is, for some reason, the tab button being pressed (keyup, keydown, and keypress) is not being detected by the conventional handling of those events. Instead, the tab on that box goes to the next item in the tab index.How would I capture that key or key press event and execute my code?
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Jan 27, 2012
I thought it was simple but i guess it's not...How do I detect when the tab key is pressed in a textbox?I've tried the following code in KeyPress, KeyDown, Leave, etc. events but the tab is not detected.
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May 15, 2009
I know that you cannot disable Ctrl Alt Del for security reasons. I was able to figure out how to disable ALT+F4 in my application though. What I am wanting to know is if anyone can give me some code to where If CTRL ALT DEL is pressed then my application will close. I have tried everything, and I just cannot seem to get the program to recognize if the user presses ctrl alt delete.
So basically I need some code that detects if a user presses ctrl alt delete then if htye did it closes the application.
(I am making a quiz program.)
PS: I am on Windows 7 RC and I also use Windows Vista. I am using Visual Studio 2008 Professional Edition.
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Feb 9, 2010
I am working on an application and I need urgent help. One of my forms contains a web browser. I need to detect if F3 key is pressed while the web browser is active, so a dialog box will appear for a particular functionality of the application. But unfortunately web browser control does not have keyup, keydown or similar event to help me detect if the F3 key is pressed. As far as I know, one way to solve this problem is adding a menu which has F3 shortcut. But my application does not contain any menus, so I dont want use a menu in this part of the application.
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Oct 17, 2011
I have a TextBox and set the MiltiLine property to true and AcceptsTab property to false.When the TextBox has focus and i press Tab it works fine and the next control get the focus, but when i press Ctrl+Tab it works as if AcceptsTab property is set to true and makes a tab character into the TextBox.The reason i press Ctrl+Tab.. when switching between forms in my MDI application.Now how to make a Ctrl+Tab when pressed works like Tab when pressed in a MultiLine TextBox?
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Jul 22, 2010
How do i detect ( ' and " or better still any char which sql cannot read)in textbox. this is my NOT working code there are codes before else if and after else so ya ...
[Code]....
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Sep 23, 2011
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Textbox1.Text.StartsWith(a.Text & (" ")) = True And String.IsNullOrEmpty(a.Text) = False Then
Textbox1.Text = encryption.Text.Remove(0, a.TextLength)
phrase.AppendText("a")
[code]....
I want this part of my project to detect spaces because it can happen if the user puts in a certain value for on and that value begins with another it will not process. (ex. a.text = 123, b.text = 1234, then i get the outcome or "aa" and it should be "ab"
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Jun 7, 2012
I'm trying to make a bosskey. [code] However I want to be able to have the user press the keys they want and have it display what they pressed in a textbox. Next I want the textbox to be used as the key/s for the key down event itself.
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Oct 21, 2008
I have a problem detecting whether one of the arrow keys is pressed, all the other keys seem to be detected apart from the arrow keys??? I have set key preview to True........ It detects the arrrow keys BUT ONLY if I have NO other controls on the form??? example..
Me.Text = e.keycode
It works, but then if I add a button for example, it stops.
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Mar 28, 2011
i am here with another problem also relating with tab .now i had 15 textboxes in my form ,when i press tab on form it simply jumps from 1st textbox to 9th textbox .
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Jun 26, 2010
I have added 6 textbox controls now I want specify the order in which they are accessed when tab is pressed like txtbox1 then it goes to txtbox2 and so on.
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Nov 21, 2011
I have made a textbox, which restricts character use to numbers and periods only. Nice, but now I cant enter backspace to amend any data typed in my textbox.
Private Sub TextBox10_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox10.KeyPress
Dim allowedChars As String = "1234567890."
If allowedChars.IndexOf(e.KeyChar) = -1 Then
[code]....
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Nov 2, 2009
I need to set a variable upon the user scrolling to the end of the text on the textbox ("Scroll to end to accept terms") type thing but I can't seem to find how to get the value.
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Aug 14, 2008
How can I set a button, so that when it is pressed, it stays in the pressed down graphic state. Then when pressed again it returns to the normal not-pressed visual.Make a button stay like this until pressed again: url....
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Mar 8, 2012
I have two issues. The first is that I want to make a textbox scrolling similar to how credits scroll. I don't want it to move on the form, just to scrolling the text down a line/pixel. I thought I could do it with the "Lines" element, but I'm not exactly sure how to execute it.
The other problem is with my flash screen. Right now I have it set so when a button is click, it goes onto the main form. I don't want to use the button but rather have it so if Enter is pressed at any time, it'll go to the main form. All the solutions I've tried to use involve the "e.Keycode" code, but for some reason its unavailable.
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Sep 15, 2009
I am writing a program that expands the usage of the clipboard, but I need to tell when the user has either cut, copied, or pasted something so I can write code accordingly to that. I need to know how I can check to see when the user has entered a command like this.
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Aug 1, 2011
I do not understand why this is not being detected.when I do a test in the immed it comes back true for a match, but the code never run's.[code]
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Jan 26, 2012
I have a query I am creating a Window App in vb.net (4.0) in which I have to use multiple databases although all databases are same with same db structure & stored procedures,just names are different. In the very starting of application, I need to give a option to the user that these are available db & user will select which one to connect & use.
So is it possible to detect how many db are available in the SQL Server through vb.net & how can achieve this (to provide options to the user) What would be the best approach?
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May 4, 2010
I have worked with PHP and other programming languages but I am new to VB. I want to write an application that is run manually every day, and each time it is run it checks for modified and newly created files in a particular folder
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Jun 6, 2011
i want to detect if listview has been updated
eg: there are listview1,listview2 and a button1 .u can send items to listview2 from listview1 .if the listview2 has an item button1 will enable if the listview2 is empty button1 will disable
what is the suitable event for this?? (there is an event called BindingContextChanged is it the suitable event?if so how to use it??)
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May 7, 2009
In the app we use a third party dll for looking up names and addresses.This resides in the system32 directory.Before I try and access this dll I need to be able to find out if it has been registered on the PC.So in short does anyone know the code to be able to check if a dll has been registered in the registry?
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Aug 16, 2011
I am facing problem while in detecting the multiple key combinations ..here is my cod
Private Function keyboardCallBack(ByVal nCode As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr
[code].....
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Apr 26, 2009
I have a camera with a LiveView function (images aren�t snapped, but they are directly sent to my computer), which I managed to connect with VB.net, so I have got the image in a picture box on my form.The next thing I want to do, is to gather 3 spots from the image... The spots are all red, something very similar to #FF0000 (it is a camera + lights, etc... some tolerance needed). So, can anyone help me here?
I think the working "check list" could be something like this:
- Get red, green and blue channels separated
- Change green and blue into gray scale (100% blue / green = black, 0% b / g = transparent)
- Put these b / g both into 50% alpha and put them over the red (which means where is both green and blue = black, only one of them = 50% alpha black, none = transparent)
- Somehow select the areas with most red
- Get center of these areas - my points
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Sep 13, 2009
I was just wondering if it was possible to make vb 2008 detect if there is or is not sound.As in my project i want vb to detect when a video has stopped playing and then do something else. So i waqs thinking maybe i could detect when sound has stopped and then perform my other actions..
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May 5, 2011
Private Sub ContextMenuStrip_ForDisplay_Opening(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles ContextMenuStrip_ForDisplay.Opening
If Utility.IsKeyDown(Keys.S) OrElse Utility.IsKeyDown(Keys.V) Then
[Code]....
I do the above to cancel the menu if S or V is pressed.
I'd like to cancel if ANY key is pressed.
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Mar 21, 2010
i have a pocket pc that have some special keys and i need detect when a key is pressed in my program. how can i detect the keys that is pressed? i have tested in a textbox change function the box detect all keys except that special keys there is some api to look for alk keys thats is pressed in pocket pc?
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Dec 9, 2010
How do I detect a ctrl+tab keypress?
Reason for asking: I want to stop a user from changing tabs in a tab control.
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Mar 7, 2011
I want to be able to detect when the user presses F10 or Ctrl+F10 outside of my program, and upon receiving the key press, it will send text to whatever they currently have selected (e.g. a text box). How can this be accomplished in the simplest way?
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Jun 6, 2011
I'm trying to set up a timer that counts up to ten and starts/resets when the left mouse button is clicked (anywhere on the screen even when the application is in the background). I'm struggling to find a code that suggests it is possible and now I am starting to wonder even if it is possible in VB?
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Feb 2, 2012
I need to know the status of the mouse whether it is moving or being idle. How can I do that?
I have tried with form's mouse move event but, it doesn't work if the mouse is on any control.
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