VS 2010 - Stop Textbox From Updating After Backspace
Nov 25, 2011
I have 3 text boxes that update with each other. One the user inputs the text, two the text is used for translation and instantly deleted, and three displays the translated text. If I need to backspace the code updates the translation adding double of each letter I delete. I need a way to skip all of the application code every time the backspace key is held. My current code here (full dictionary cut to save space).
Public Class Form1
Public Sub RichTextBox3_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles RichTextBox1.KeyDown
If e.KeyCode = Keys.Back Then
[Code] .....
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Feb 28, 2009
I want to have a msgbox when user press 'backspace' in the textbox.
I wrote this:
Private Sub TextBox2_KeyPress(ByVal KeyAscii As Integer)
If KeyAscii = 8 Then
MsgBox("backspace")
End If
End Sub
Why it doesn't work?
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Aug 9, 2009
estoy haciendo una aplicacion en visual web developer 2008 express edition , quisiera saber como puedo bloquear el backspace solo en un textbox , es q en este textbox estoy manejando fechas , las cuales las agrego mediante el control calendar extender de ajax ... lo que quisiera es q el usuario solo puede seleccionar la fecha mediante este control y no la pueda borrar con el backspace (seria lo mas facil ) .......ya intente con la propiedad readonly del textbox pero al cargarse la pagina me borra la fecha introducida por el control calendar extender de ajax ........o de que forma podria validar q sea una fecha correcta formato dia / mes / año (de 4 dijitos) o mes / dia / año (de 4 dijitos)
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Aug 10, 2009
I have built an addin for outlook that has a usercontrol shimmed into the interface. Everything works wonderfully EXCEPT for one textbox on one subpanel of the control. I have tried everything I can think of, but have not been able to resolve the issue:
The textbox *(A regular System.Windows.Forms.Textbox) functions as you would expect in any application with one exception. It will NOT accept the backspace key. So much so that the KeyDown, KeyPress, KeyUp events will not even fire when I press the backspace key. There does not seem to be any parameter suppressing it, and the control has focus. What is even stranger is that it works completely fine if you hold down the shift key while pressing the backspace key.
[code]...
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Oct 28, 2010
This is my prob:I have a textbox in which I have a path where a certain document has to be saved. Now when I select something from combobox1 I want the textbox to be updated so the new path becomes: (Old path & "" & Combobox1.text)
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Mar 5, 2010
i am trying to make a program and i only want the user to be able to enter numbers and use the backspace this is my code so far.
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789"
[Code]....
i have tryed adding "ascii char (08)" to the program but its not worked
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May 20, 2012
Private Sub txtInput_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtInput.KeyPress
Dim len As Integer
[Code].....
i want to delete "b" from first textbox and i should delete "King" from second textbox the length of each word is same "Acer" "King" it is always 4 in length
but i am getting following error
"Index and count must refer to a location within the string. Parameter name: count"
i also tried by replacing "len-4" by another variable dim c as integer=len-4
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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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Jun 5, 2010
Here's my code snippet:
Private Sub txtLogin2_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtLogin2.KeyPress
'// Ceci empêche l'utilisateur d'écrire des caractères ASCII ou même des espaces..
e.Handled = Not Char.IsLetterOrDigit(e.KeyChar)
End Sub
It works fine and dandy except for one issue... the only way to delete text in the textbox using this is to highlight and hit DEL... But what if I wanted to simply back space... Any suggestions?
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Nov 8, 2009
[code]The RichTextBox's text would act as if the user pressed backspace while typing in the TextBox.How is it possible to remove a character from the textbox when the backspace event happens?
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Jan 27, 2011
I'm trying to create a BMI Calculator with VB 2010. I have 2 TextBoxes for weight and length. I want to make sure that the user can only enter numeric (0123456789) values and also backspace and delete.
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Jun 9, 2011
I want to control a textbox to only allow numbers, backspace and a certain length. Ive tried with the IsNumeric function but I cant seem to get it to work.
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Apr 26, 2010
I have managed to format a text box to be formatted to two decimal places, and to only accept numbers.Only problem is i need to allow the backspace so that if someone types something wrong, they can backspace and type the correct number
Private Sub txtCAmount_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtCAmount.KeyPress
'Allow only numberical input plus decimal.
Dim allowedChars As String = "0123456789."
[code]....
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Mar 10, 2009
I have a simple question regarding the KeyPress event. I'm trying to make it to where my TextBox on my form can only accept numbers 0-9, backspace and '.' /without quotes. I've successfully got it to accept numbers 0-9, accept backspace, I'm just wondering - what line do I add so that it can accept periods as well?
Here's my
Private Sub TextBox_KeyPress(ByVal sender As Object, ByVal e _
As System.Windows.Forms.KeyPressEventArgs) Handles _
TextBox.KeyPress
[CODE]...
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Nov 1, 2010
I have a form with many controls that are binded to a datasource. when some of these values change, they impact aspects of the form itself like the backgroud color or the title. There is a filter applied to it so it only displays certain records (this is important).when I change something and save the data I need to update the filter to show all the previous records plus the current one.All that works great, but the problem is: saving the data or changing the filter makes the controls take a new value based on the new record and go through the subs that each one have to modify the aspect of the form. This happens because if I save the data first, then the current record does not conform to the filter and all the data in the form changes, or if I change the filter first, we go to the first record of the set.
After that I return to the correct record and everything looks fine, but going to all the changes makes the app halt for a moment.Is there a way that I can stop the controls in the form form updating to their binding data while saving or changing the filter in the bindingsource?
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Nov 4, 2009
I'm trying to create a backspace button. For it, I have:
If Len(TextBox1.Text) > 0 Then
TextBox1.Text = Left(TextBox1.Text, Len(TextBox1.Text) - 1)
End If
I get the error: 'Public Property Left As Integer' has no parameters and its return type cannot be indexed.How do I, first off, solve the error, and then, make it functional?
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Apr 7, 2011
How i can create a button as soon as I squeeze him, he will erase the last letter written?exactly like BackSpace
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Nov 29, 2010
I am making a calculator. I need a button that functions like a Backspace-button on a calculator. Erase the last inserted char, or what ever may work.
I use:
Button1
TextBox1
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Dec 7, 2009
I created a form and have the variable inputs for 4 motor run statements. Then with a start button the script starts and it is surrounded by a for next statement to loop 10 times. It works fine but if i need to stop the execution of the script with a stop button. I put the stop in a new section but of course does not work to do a motor stop. It just causes the exe to not respond till the loop is complete. Just need to be able to stop the Run1_Click button section.
Edit:I do not mind if it finishes the 4 motor run commands and then stops execution of the loop. So need to figure out a way to trigger a stop from a button on the form to stop the cycle. For the future the loop will be a variable integer input so 10 will not be the standard.
Edit::Does a ' Do ' statement sound like the thing to use? If so how and where would I place that? Have a Stop button on the form and it would stop after the 4th motor run command.
#End Region
Declare Function InitStp Lib "stp.dll" () As Integer
Declare Function RunMotor1 Lib "stp.dll" (ByVal steps As Integer, ByVal interval As Integer, ByVal direction As Integer, ByVal outputs As Integer) As Boolean
[code]....
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Nov 15, 2011
Can I stop updating the user display of a control (rich text box) temporarily? I want it to process what I tell but not change how it looks for just a small piece of code.
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Sep 27, 2009
Private Sub NumericKeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
[Code]...
and it wont let me use backspace. How would I make it so I can use backspace?
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Mar 1, 2011
I have a START and STOP button and when the user clicks "start" the program does a whole bunch of calculations and all. However, I noticed that when I was testing the program I clicked STOP the program continues to execute stuff.
My START code is basically a while loop that iteratively does some calculations.
So I just put a boolean variable as the while condition and when user clicks stop its set to false and when user clicks start its set to true. However, when I click stop, the condition is set to false yes but it still executes all the code until the condition is re-evaluated right...so my question is how can I get out of the while loop when user instantly clicks "stop"?
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Aug 31, 2011
i have a texbox TextChange event which every time when a user hind a character in it , am querying data to my database and display that data under a datagridview control.but my data now have been grow up and still going, every time am enetering a character to the textbox is taking time to query that data and if the user type a quickly word then a lag occures to the textbox.
i have seen a lot of programs and microsoft programs that when a user is typing is not seacrhing anything unless the user stop typing .with out having any other event of focus lost or anything.can i do that also in my application with an easy way and avoid using timers or any complex way?
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Nov 15, 2011
Has anyone have any problem when the program is running (debug mode or release). Problem starts after i type text onto the text-box and press tab(using tab stop) and then after that i can't do anything else except type on that text-box.
In order for me to continue or close it i have to use task manager to end the process.
Visual Basic 2010 Express
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Nov 23, 2010
I'm trying to update a text field... in this manner:The main form (where I have the design)
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Nov 29, 2011
i tried something like this, it insert into the database even thought nric is wrong. So i want it to stop inserting the data into the database when the nric validation is wrong, however from what i do, the result is it still insert the name in....so where should change to allow it stop inserting until user change the value then can continue insert???
Protected Sub btnSubmit_Click(sender As Object, e As EventArgs) Handles btnSubmit.Click
register()
End Sub
[Code]....
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Oct 17, 2011
I have a progress bar for each function, but I would like a textbox to show the user what stage of the update they are on. The textbox becomes visible but the text does not display the text.
Private Sub btnUpdateAll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdateAll.Click
txtUpdating.Visible = True
txtUpdating.Text = "Updating ALPS Data..."
UpdateALPS_Data()
[Code] .....
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Aug 20, 2010
i try to create a windows form that act something smilar to a cash machine i managed to enter a mount with my first button then my second button is for withdrawing money it checks the amount in the text amount if it is higher than the amount the small dat hold in the amount it will throw an error message if it is less or equal it write the amount in the text box my goal is to deduct that amount in the textbox amount from the amount already at the database.[code]
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Feb 7, 2010
I have been trying to update a textbox on the main form of my program using a different thread, however the changes are not relected in the textbox.I am using MS Dev studio 2010 beta 2.0 .NET 4.0. Here's my code....
The main form
Code:
Public Class frmMain
Private Engine As New clsEngine
Private txtMessage As String
[Code]...
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Nov 29, 2011
i have a user name, password and a calendar button which when click, a calendar appear and insert the date selected into the date textbox field, and a submit button. After, i key in value for user name and password and click on the calendar button, the password textbox field because empty. So how can i going to stop the password textbox field to become empty when i click i the calendar button?? i set visible calendar only when click on the button
[Code]...
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