I'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.
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I am trying to restrict the the number of decimal places to two in a textbox.
I've already made it so only numbers and decimals can be added, now this is the only thing that isnt done
Private Sub MoneyTxtxbx(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles _
MoneyTxtbx.KeyPress
[Code]....
I have a textbox called textbox1. I wanted to limit it to only two characters, so I added the code TextBox1.MaxLength() = 2, however this textbox is for user input and only want to allow numeral values 0-99. And if the user entered a non-numerical value an exception would occur so I need help on to handle that.
View 2 RepliesI have a textbox called textbox1. I wanted to limit it to only two characters, so I added the code TextBox1.MaxLength() = 2, however this textbox is for user input and only want to allow numeral values 0-99. And if the user entered a non-numerical value an exception would occur
View 3 Replieshow can i limit a user to enter 10 digit no like telephone no in textbox without using regular expressions?
View 12 Replieshow can i limit a user to enter just 10 digit number (minimum 8 but not more than that 10 in any case) in a textbox(like telephone no)?
View 4 RepliesHow do i limit the amount of characters in a masked textbox? I can do it in a normal textbox but not in a masked textbox because there is no option to limit the size.
View 6 RepliesAssuming that I have a Windows Forms textbox and want to reduce the maximum amount of characters that can be allowed in via user entry, how would I do that?
View 2 Repliesi 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 RepliesI 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.
How to make validations for textbox allow numbers only or textbox allow letters only?
View 14 Replieshow can i make it so my textbox can only have numbers in it
View 2 Repliesis there a way to allow only numbers in a textbox?
View 6 RepliesI have textbox and it has keypress event , I want users to allow only numbers
View 19 RepliesI 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.
I'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 RepliesI 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 RepliesI 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 RepliesI 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 Repliesok 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 RepliesHow 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 RepliesI 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].....
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I 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 Replies[code]...how to restrict numbers for TextBox?
View 6 Replieshere'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"
I 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 RepliesIf the user enters non-numeric and numeric values in a textbox, how do I keep only the numeric part?
View 3 RepliesIs there also a way to make it so that there can only be numbers in a certain textbox?
View 12 RepliesI 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 RepliesI 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
