Allow Only Numbers In A Textbox?
Oct 29, 2006is there a way to allow only numbers in a textbox?
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Limit Textbox Input To Numbers And Range Of Numbers
Apr 4, 2012i have one more issues, and hope is the last for now. How can I limit a textboxe's input to only numerical with certain range of values (eg -10 to 10) and with that happening while I type in the values?
View 9 RepliesInputting Numbers Into A Textbox And Formating The Numbers?
Jul 30, 2009I just D/L VB express 8, and I'm trying to learn how to use it. what I'm trying to do is write some code that:takes a number into a text box (textbox1.text)do some simple calculations with that number when I press a button (button1)display the results in a second text box 9textbox2.textThe first problem I am having:The numbers are in the "milli" range, meaning to the power of negative three, so 10^-3 = 0.01 I do not want to enter 10^-3 or any other exponent into the textbox, I am simply entering in 10 because all my units will be in milli. I've tried using exponent and scientific notation but it doesn't calculate correctly. I've done a "work around" to get it to do what I want, but there has to be a simpler way to achieve the above results without. for example, the user enters 10 into the textbox, the button multiplies 10^-3 *30, as a crude example, and stroes that value (say, B=10^-3*30) and B is DIM B as Double.
Problem number two:Error checking. I need to validate that only numbers can be entered into the textbox, or else the program will display an error message (messagebox). I can achieve this to some degree with sample code from here and other places, but, some of the code does not take into account that some numbers have decimal places (I have foud code that does, and it does work), but if a users enters, say the letter "E", it crashes the program. If the user enters "10.3Z", it crashes the program. I cannot seem to code for the last case, a mixture of numbers and letters to get an error message box.
Make Validations For Textbox Allow Numbers Only Or Textbox Allow Letters Only?
Sep 9, 2010How to make validations for textbox allow numbers only or textbox allow letters only?
View 14 RepliesTextbox - Make It So Textbox Can Only Have Numbers In It?
Apr 18, 2009how can i make it so my textbox can only have numbers in it
View 2 RepliesNumbers Only In Textbox?
May 30, 2009I have textbox and it has keypress event , I want users to allow only numbers
View 19 RepliesOnly Numbers In The Textbox?
Oct 24, 2010I have a textbox where the user inputs the employee number, but it must only accept numbers.
I have coded some lines in the textbox's TextChanged event and almost have it. but when I adjust it to eliminate other characters it triggers itself (recursive). that is not a big problem since the second time does nothing but I dont like the unprofessional way its handled.
But the real problem is that I cant get it to stay "blank" when the user erases all my code always puts "0" on the texbox.
Another thing is that when a non-numeric key is pressed, after the code dismissis it, the cursor goes to the start of the textbox messing up the input.
Textbox Must Contain 4 Numbers?
Dec 29, 2010I've made a textbox which MUST contain 4 numbers. If there are 3 numbers (or less) you'll get an error or something. I already changed the tabindex to 4.
View 3 RepliesTextbox Numbers Only?
Mar 11, 2010I want to make a routine named "NumberOnly Private Sub TextBox4_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox4.KeyPressNumbersonlyEnd subAll textboxes must accept numbers data on which I call this routine
View 5 RepliesAbstract One By One Numbers From The Textbox
Sep 29, 2009I am doing a project on abstract the numbers that i get from the datagridview to append it on the other textbox. Ok I elaborate more. I have 2 form which is form1 and form2. For the form1, the view is 2 textbox and a 'To' button. when click on the 'To' button, it is direct to form2 which is the datagridview. After selecting the selected numbers, it will display the numbers on the form1 of the one of the textbox. but the problem is I want to abstract one by one of the numbers and append it on the other textbox of the form1.
View 9 RepliesAbstract One By One Of The Numbers From The Textbox?
Sep 29, 2009I am doing a project on abstract the numbers that i get from the datagridview to append it on the other textbox. Ok I elaborate more. I have 2 form which is form1 and form2. For the form1, the view is 2 textbox and a 'To' button. when click on the 'To' button, it is direct to form2 which is the datagridview. After selecting the selected numbers, it will display the numbers on the form1 of the one of the textbox. but the problem is I want to abstract one by one of the numbers and append it on the other textbox of the form1.
View 1 RepliesAdding Numbers In Textbox?
Jun 21, 2010ok the problem is that when a button is click I want it to add 1 (+1) to a textbox. This process will keep on going on till I tell it not to...How would I just keep a running total of whats happening in the textbox...What I mean to say is that if I pressed the button 10 times, instead of it showing:111111111 I want it to automatically add the numbers up to show 10 instead.
View 1 RepliesAllow Only Letters And Numbers In TextBox?
Oct 10, 2010How can I allow only letters A-Z (both lowercase and capital) and numbers 0-9 to be entered into a TextBox control? Also spaces are not allowed either.Goldfish64
View 2 RepliesAllow Only Numbers In A Textbox With Option Of , . $ Etc?
Apr 20, 2011I recently have had lots of problems getting a text box to display only numbers or special characters and or letters only. Much research on past posts just compounded the problem as the code is either for previous versions or other language. So I thought I would post a bit of code that works great with VB 2010
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
e.Handled = True
[code].....
You Know Your Addicted To Computers When - Your main computer is a 7 terabyte, Core2Quad 3 Ghz +, with 4 or more gigs ram, over 200 programs installed, and you would rather sit with it programming than go to the movies!
How To Get Telephone Numbers From TextBox
Sep 29, 2009I have a problem in putting the telephone number using the datagridview. I have build 2 forms which is form1 and form2. In the form1 there are 2 textbox and a 'To' button whereas in the form2, there is a datagridview which display the telephones numbers and a button. When run the application, the user need to get the telephone numbers from the database so that is why when clicked on the 'To' button, it will go to the form2 which is the datagridview. After selecting the telephone numbers and click on the button at the form2, the telephone numbers will be display at the form1 first textbox. But the problem is that, I grab the telephone number which has been display in the form1 first textbox to the second textbox in the form1. I could not get the telephone numbers.
View 1 RepliesLimiting Textbox To Numbers Only?
Feb 20, 2012I've made a lot of progress on my project. Only question I have now is how do I limit a textbox to only allow users to input numbers and one decimal point? The point of the decimal point is to make it currency. So if the answer of my calculation is 56.56566 I only want it to be $56.57.
View 5 RepliesRestrict Numbers For TextBox?
May 10, 2012[code]...how to restrict numbers for TextBox?
View 6 RepliesTextbox That Accepts Only Numbers?
Aug 15, 2009here's the code
Public Class Prelim1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim mile, inches, centimeter, foot, kilometers As Double
mile = TextBox1.Text
[code]....
notice the textbox1.text, it should only accept a double. IF the user inputs letter or whatever characters then the program must prompt a message which reads "input only a number"
Textbox To Display Only Numbers?
Mar 27, 2011I am using VB 2010 Express and I have a textBox Called "textBox14.Text" which I want to only display numerical values, so the user cant type letters only numbers,
View 5 RepliesValidate A Textbox To Only Contain Numbers?
Sep 8, 2009If the user enters non-numeric and numeric values in a textbox, how do I keep only the numeric part?
View 3 RepliesVS 2008 - Only Numbers In Certain Textbox?
Aug 19, 2009Is there also a way to make it so that there can only be numbers in a certain textbox?
View 12 RepliesVS 2008 Textbox Only Has Numbers?
Aug 21, 2010I have a textbox and I want to preform a IF statment to see if there are only numbers in the textbox. How can I do this?
View 17 RepliesWrite Only Numbers In TextBox?
Dec 13, 2011I used this code to prevent write letters in TextBox only numbers. but I couldn't use the backspace key . how can I use it with this code
vb
Private Sub txtTelN_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtTelN.KeyPress
If Char.IsNumber(e.KeyChar) = False Then e.Handled = True
End Sub
Add Numbers That Are In A Listbox And Display Them In A Textbox?
Jun 2, 2011when i click a button , an inputbox should come up taking say 10 numbersthen is it possible to add the numbers that are input into this inputbox and display it into a textbox or msgbox
oafter inputting the numbers they will be stored in a listbox and then they will be added together and displayed in a textbox or msgbox
Adding Specific Numbers From TextBox?
Jun 3, 2011I'm trying to add certain numbers together from a textbox full of numbers from 1 to 10. This is my
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub[code]....
When the button is clicked, it gathers the list of numbers from the test.txt file and displays it in the textbox. Now what I want to do is make a label so that after it streams the data and displays it in it's multi-line text box, is for every 10 and 1 displayed on one line, it will subtract 1 from the number in the label. For every 2,3,4,5,6 I want it to add 1. For every 7,8,9 it will not add anything.For those who can tell I'm a blackjack fan and I was curious on how to keep a running count in a label from a multi line list of numbers.
Allow User To Enter Only Numbers In A Textbox?
Aug 5, 2010How can I prevent the user to enter characters but only numbers and '.' in a textbox in vb.net 2005?
View 4 RepliesCheck The Textbox - If Statement With 2 Possible Numbers
Jan 12, 2012i am probably overthinking this but how can i check the textbox for either a 655 or 699 in the first 3 numbers in the textbox? The current code i how now works but displays an error if (im guessing) it doesnt find the other number in the textbox as well:
[Code]...
Distribute Numbers And Letters From One Textbox To Many?
Dec 6, 2010I'm on VS 2008 I have one form contains many textboxes,when I write in one textbox (UserName) the letters and numbers should distribute to the other texts where each textbox has only one letter or number from the original text to get them ready to be encrypted.
What code I can use in text change event that takes the whole text and throw it in the other textboxes so each textbox has only one value ?
Divide Numbers In A Listbox By A Textbox?
Jun 6, 2011I am quite sure I am gonna feel real dumb when I found where I am screwing up but I am ALMOST done with a fraction calculator (part of a complete algebraic calculator I am making) and am stuck when trying to reduce my fraction because when I hit the reduce button, it only divides the answer by the first number in my listbox instead of all of the numbers.[code]...
View 2 RepliesExtract The Left To Numbers From A Textbox?
Nov 26, 2009I am trying to extract the left to numbers from a textbox this is hat I have but it does not work:
Dim lblLmins As String
Dim txtHrsMins As String
lblLmins = (Left(txtHrsMins, 2))
In VB6 it's very easy lblmins = left(txtHrMins,2))
