Capture Decimal Value In Datagridview Keypress Event

Jan 18, 2011

i am using the following logic to capture the keypress event in a dataGridView so that I can edit numeric cells but cannot capture decimal value in my code i cannot pass the digit.

[Code]...

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Capture Keypress Event Outside An Application?

Mar 11, 2009

how to capture keypress event outside an application

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Capture Keypress Event When Window Is Not Focused?

Jul 11, 2010

i am trying my hand in visual basic 2010

it's a windows form program, what am i trying to do is, when i press ctrl+v (yes pasting) in other program, whether it be notepad or a text box, something also happens in my program.

So i need to capture the keypress event when my form does not have the focus.I would hate to create a windows service for this, but if there is no other way i might have to do it.

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VS 2008 Datagridview Display With Keypress Event

May 6, 2010

I have a datagridview bound to an Access datatable. It is nothing more than a one column list of chemicals. To allow the user to more easily navigate the list, if they press a letter it will jump to the first chemical alphabetically of that letter. If they keep tapping that same letter it will move down that list one by one. This all works fine. The problem is if you hold down the letter it will progress down the list but it doesn't show that progression. I want it to function much like if you hold down the down arrow key in a datable you'll see each successive cell be selected as it goes down the column.

[Code]...

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Capture Event When Value In Datagridview Is Changed?

Apr 2, 2010

I've been searching all over and I'm either not searching for the right words or it just doesn't exist. I've got a datagridview (dgv) on a form with some textboxes that are databound to different fields in the dgv's datasource. I want to capture an event if someone changes a value through one of the databound controls so I can mark the row as modified. I've been going through the dgv events trying to capture something, but I can't find anything that fires when a value is changed. The dgv is read only, so the values can only be changed through the databount textboxes.

How to I know if someone changes a value in the dgv? Is there a setting in the dgv that will tell me if a row is modified?

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Capture Keypress / Let User Pick Their Own Start/stop Key?

Oct 29, 2011

Currently I have the start-key for my vb.net application hardcoded like this:

GetAsyncKeyState(Keys.F2)

Where vb.net sais "F2 As System.Windows.Forms.Keys = 113" on mouse-over.But I want my users to be able to pick their own Key. If I make a drop-down box (combobox) and pre-define some choices in there (Like ESC or F3), all those choices are strings. How can I convert those strings to a System.Windows.Forms.Keys integer? Also, I'd like it to also be possible to "capture" a single keypress. So they'd click the "capture" button, and the next key they hit will be saved as the start/stop button. But I wouldn't even know where to begin looking for that one.

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KeyPress To Trap A Decimal Or Period?

Nov 8, 2009

I am trying to prevent the user from typing dupilicate decimals or periods into a data entry form. The code below has all been tried and yes, there was a do something in there. This is just a sample of what I tried. When I could not trap "." I moved through various renditions of the e.keyvalue still no luck. I know it is simple and stupid but it darn sure escapes me...

If e.KeyValue = 110 Then 'NUMPAD DECIMAL
If Me.MultiplierTextBox.Text = "." Then
End If

[Code]....

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Disable Scroll Event Of Listbox After The Keydown Or Keypress Event?

Apr 9, 2010

Programming language is vb.net

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ALERT: Event Handling - Capture The Event For When The F1 Key Is Pressed

Feb 15, 2011

I have alot of experience in working in VBA for excel, but not so much experience in creating my own structures so it's all still a bit foggy. I'm trying to capture the event for when the F1 key is pressed, not just when the form is active, but anytime the program is running. The code below expressing the handling is automatically generated for me in VB Express... But I'd like to change the situation to encompass anytime the program is open. I guess I have to reference events that happen in windows in general, but i don't know how to do it. I think i have to create the even in a class module?

[Code]...

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Keypress (not Send) Event?

Jun 2, 2010

I couldn't manage what the matter is not even after searching. Here my question goes:I need to do a simple task (close my form on pressing escape key) and I use the following code:

Code:
Protected Overrides Sub OnKeyDown(ByVal e As System.Windows.Forms.KeyEventArgs)
Select Case (e.KeyData)
'Close on Escape

Well , it works when I click escape my form closes , but.. if I have pressed by accident or some else matter any of the arrow keys (up , down , left , right) before escape and then hit escape nothing happens. I checked if any other key does that and as I see it does not.

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KeyPress Event Not Working?

Feb 15, 2012

I just want to ask why my KeyPress event is apparently not working. What I want is that when I press the letter m, the selectedindex property of my listboxes would change. Here is the code;

Select Case Asc(e.KeyChar)
Case 13
Try
tray.ListBox1.SelectedIndex = tray.ListBox1.SelectedIndex + 1

[Code]....

I also want to know what the "e.handled = true" is statement for. I set the KeyPreview property of my form to false and true but it's not working as well. the KeyPress event should be triggered regardless of the control within the form that is in focus.

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Keypress Event Outside Of Application?

Nov 7, 2009

Is it possible to capture a keypress with my application, even if the application isn't focused?And if it is, could someone please point me in the right direction? (I.E things to look up, tutorials)

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KeyPress Event Using Scanner Gun?

Nov 15, 2011

I am trying to create keypress handler that will execute a line of code when Tab, Space, or Enter key is pressed or passed by the scanner gun while the control is in focus. I got it to work with space and enter key but with tab key, the cursor will just jump to the next tab stop without executing the code.

Private Sub Button2_KeyPress(sender As Object, e As System.Windows.Forms.KeyPressEventArgs) Handles Button2.KeyPress
Dim keyChar As Char

[Code].......

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Supressing The Keypress Event

Mar 4, 2009

I'm trying to create an application that uses a PictureBox to display an image. I use the arrows keys to switch images and the space bar to rotate the current image. Since the KeyDown or KeyPress events don�t get fired when I click the arrow keys, I had to override ProcessCmdKey. It works fine, the problem is: the applications also has a few buttons and when I click an arrow key the image gets switched but the button�s focus change as well, worst yet, when I press the space bar, the image gets rotated but the button which has the focus gets pressed.

[Code]....

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Backspace Characters In Keypress Event?

Jun 1, 2010

I have two textboxes and as the user types in one I want to append the text to another textbox.How do I allow the user to delete characters in the first textbox with backspace/delete key and have those changes replicated in the 2nd textbox?

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Enable Keypress Event With ComboBox ?

Jun 2, 2011

We Could Easily Called A Functions By Pressing Enter In keypress Event. On textbox in vb.net. Eg.:-

If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then

Call Fsn()

End If

But. I can not called the functions on ComboBox. IN similar fashion. please help me to called a Funtion when we press ENTER IN ComboBox.

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ENTER Keypress Event Only Handled Once?

Jun 22, 2010

I am trying to add to items to a combobox by using the "enter" key. It does work when I add the first item, but if I manually clear the box and add another items it does not get added to the list.

(1) I click in the combobox and type "hello" and press the "enter" key

(2) I click on the dropdown arrow and see that "hello" is in the list

(3) I select "hello" in the box and erase it, item is still in the list

(4) I type "goodbye" in the box and press the "enter" key

(5) "hello" is still in the list but "goodbye" is not

Here is the code:

Private Sub CopyrightCombo_Keypress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles CopyrightCombo.KeyPress
If e.KeyChar = Microsoft.VisualBasic.ChrW(Keys.Return) Then

[code].....

if I comment the if/end if line and type "hello" the items added to the combobox list are: "h", "he", "hel", "hell", "hello" wich makes sens since the add items is run on every keypress? I know that my commands for adding items is good, I know that my keypress event is handled properly but not when I specify using the "enter" key.

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GridView KeyPress/KeyDown Event Using VB?

Dec 26, 2009

using a datagridview and it bind by 3 rows and 3 columns,my task is when the press the F5 key then need to execute some code, my problem is if the datagridview cell is focused then now i press F5 key then the next task is executed but if the cursor is in the cell and i press F5 Key then the Key events was fired

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How To Handle Enter KeyPress Event

Jul 19, 2010

I am using the Event Handler below for the Enter Key Press Event, it is running when ever any of the keys is pressed. This is not so much a problem when the app. is running, unnecessary yes. It is giving me problems when ever I am Debugging using Breakpoints. How can I change the Handler so it only runs when the Enter Key is Pressed, doing away with the If statement?

Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If e.KeyChar = Chr(Keys.Enter) Then
'Different code blocks will run here depending on what
'TextBox or Label is selected.
End If
End Sub

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IDE :: NumericUpDown Control And The KeyPress Event?

Aug 9, 2009

As part of a program that I am composing, the user needs to enter a value by way of a NumericUpDown control on one particular form. Once this and other criteria have been evaluated, the program will then move to the next "step" of the program. If they use the spinner built into the NumericUpDown control, the event is fired on every change and that's all well and good, but if they double-click the value in the control then type the value in manually, it doesn't fire until the control no longer has focus. I can't depend that this might be the case however. Using the "KeyPress" event, I can in fact know when the control has focus and the user has typed but what I cannot seem to get it to do is to get the control to "read" these keystrokes as values until the control loses focus.

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Invoke A Textbox KeyPress Event

Mar 18, 2010

anyone know how to invoke the KeyPress event ? This code shows what I would like to do, but it simply calls the eventhandler and does not insert the text into the text box, so is not what I want/need.

[Code]....

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Keypress - How To Use KeyDown Event In Form

Mar 10, 2011

I'm using VB.NET (2008) and .NET framework 3.5. In my application I've got an on screen button that, when pressed, sends "00" as the characters [via SendKeys.Send("00")]. I also have a keyboard that has a '00' key that sends "00", two zeros, when pressed. I'm picking up the keypress using the form's KeyDown event - it fires twice, once for each "0" and works whether the on-screen or keyboard '00' is pressed. There's also a singe '0' on-screen button and key on the keyboard that sends "0".

I want to be able to treat the "00" as a single event. I.E. in the KeyDown handler, if the character is a single zero "0", I would like to check the next character to see if it is also a zero "0". If it is then I can handle it appropriately, but also need to remove it (from the keyboard buffer?) so that it doesn't fire the second KeyDown event. If it's not a zero then it should be left to fire the next event in the normal fashion.

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Track Key In Keypress Event Of A Combobox?

Aug 8, 2009

how can i track keypress in keypress event of a combobox i try this:

[Code]...

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Use KeyPress Event And Resize Application While?

Aug 20, 2009

I've tired to use KeyPress event while in focus of my program's window in VB.Net, but it doesn't work.

For example I wanted to press the number "2" anywhere while in focus of the application and as effect the pixels of the window will change from 200,200 to 600,600 (hortizontal and vertical)

Private Sub Form1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress
Form1_KeyPress(Keys.D2)
Dim size As Size
size = Me.Size

[Code]...

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VS 2010 KeyPress Event In WPF Application

Nov 15, 2011

I'm trying to create a WPF application and found out that there is no KeyPress event for Textboxes, so I used PreviewTextInput. Now, I want to have a function that will block the keys that will make the input data invalid. [code]Now, my problem is, when I choose numeric, the textbox still accepts spaces, how can I block the spacebar?

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VS 2010 KeyPress Event Not Activating?

Apr 28, 2010

I have a short program to try to capture keystrokes. The KeyPress Event does not activate?

Dim Hold As New TextBox
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress

[code].....

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Avoid Special Characters In Keypress Event?

Sep 5, 2010

i have a textbox in my form i want to avoid special characters in keypress event

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Forms :: Keypress Event Is Not Triggered When Push A Key

Mar 23, 2009

I have created the following piece of code to try and see if the user pushes the 'f1' key, and if they do.

[Code]...

I am not sure if this code works yet because the keypressed event is not triggered when I push a key. Could someone tell me how I can change my code so that it will test what key is pressed, no matter what control on the form has focus?

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Forms :: Textbox's Keypress Event, Look For Ctrl+v

Apr 5, 2005

i know this has to be simple but i can find anything anywhere tonight on how to check if while a textbox has focus if the ctrl+v or ctrl+c was pressed i simply need to use it like such:[code]

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Get The Full Text Of A Textbox In A Keypress Event?

May 11, 2012

This is my code:

Private Sub prices_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles wholeprice_input_new_item.KeyPress, dozenprice_input_new_item.KeyPress, detailprice_input_new_item.KeyPress, costprice_input_new_item.KeyPress

[code]....

I want to validate all the characters. How I can make the event keypress validate all characters in a text box?

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