How To Make Textbox To Accept Only String
Jun 7, 2010How should i make a textbox to accept only string? And if there is error to appear the Error Provider. I have fixed it for the integer, but it doesnt work in string.
View 1 Replies
ADVERTISEMENT
Make A Textbox Accept ONLY Numbers?
Nov 10, 2008hows to make a textbox accept only numbers? and ".". i tried looking in the Help, couldnt find something relating to it. i guess it's something to do with the keys pressed on the keyboard so if i could determine and reject certain keys (anything thats not a number) it could work.
View 6 RepliesHow To Make A Textbox Accept Numberic Values
Mar 12, 2010I need help with making a textbox only accept numeric values only, as in setting a timer interval.
View 2 RepliesMake A Textbox Control To Accept Dates Only?
Feb 3, 2012How do I make a textbox control to accept dates only and convert to a valid date format? I don't want to use the calander control. e.g. if I enter 2/17 or 2-17 or 02/17 or 2/17/2012; it will convert to 2/17/2012
View 4 RepliesMake Class Accept String?
Oct 15, 2011I Want to make a class accept string variable like this
Dim mystring as custstring
mystring = "test var"
like how we declare string classes I tried to use property as such
Public class cust
dim inputstr as string = ""
Public Property cust() As String
Get
[code]....
But it doesn't seem to work?
How To Make Textbox Accept Only Latin Characters And Numbers
Dec 11, 2011How Can I make TextBox accept only Latin characters and numbers.?
View 9 RepliesGets A String (mysub(string)), But AddressOf Doesn't Accept A Parameter Inside The Routine?
Aug 18, 2011I have buttons generated through code (dynamically). I have to associate an event (the same) to them. I use AddHandler button.click, AddressOf mysub.The issue is that mysub gets a string (mysub(string)), but AddressOf doesn't accept a parameter inside the routine. How can I do this? Using also an alternative to AddressOf.
EDIT:
Public Class Form1
...
Private Sub mysub(ByVal sender As Object, ByVal e As System.EventArgs, ByVal str As String)[code]......
.net - Function To Accept List(Of String), Array & String And Similarly Return List(Of String)?
Jul 29, 2011I want the Function to accept List(Of String), Array & String and similarly return List(Of String), Array & String respectively. The Function simply adds a string (month) to the input collection. I just want to use it for string, array and list with needing to think of conversions.
[Code]...
Accept Input For Textbox 1 And Textbox 2?
Jul 14, 2010I have two textbox controls and I want to accept input for textbox 1 and textbox 2. However, when user enters text into textbox 1 I would like textbox 2 to mirror the same text as it is typed.
I am sure this is a very simple procedure however it is new to me and I am having trouble finding an answer with search engines. Most result are coming back as text that one can read backwards in a mirror which is not what I am looking for.
Accept Certain Symbols In Textbox In VB?
Apr 2, 2011I have a textbox where I have already put the keypress code to accept characters and number
View 1 RepliesOnly Accept Digits For Textbox?
Jan 26, 2011I found this code for making my textbox only accept numbers.
Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789"
[Code]....
But... the user can't delete the numbers using the backspace button. How do I do then?
Only Accept Digits In Textbox
Apr 6, 2011Given a texbox, how can I completely ignore non-digit characters? So if I press "A" or "Z", those characters would never appear in the textbox. I'd like to run a bit of code if the user tries to input digits and if he tries to input non-digits too..
View 3 RepliesOnly Accept Digits In Textbox?
Feb 23, 2009Given a texbox, how can I completely ignore non-digit characters? So if I press "A" or "Z", those characters would never appear in the textbox. I'd like to run a bit of code if the user tries to input digits and if he tries to input non-digits too
View 1 RepliesTextbox Accept Only Digits?
Mar 27, 2010Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789$,"
If allowedChars.IndexOf(e.KeyChar) = -1 Then
' Invalid Character
e.Handled = True
[code]....
this code accept only digits and its working like a charm but if i typed a wrong number its not allowing me to use the delete or the backspace on the keyboard?
Textbox To Accept Only Alphabets Like A-Z And A-z?
Apr 14, 2010I wish textbox to accept only alphabets like A-Z and a-z..How to validate this?
View 2 RepliesHow To Make A String For A Textbox
Jun 8, 2011I need to make a string for a description textbox so later it can be added into a listbox and I dont know how to do this and this is all I got, which isnt much Dim desripition As String Private Sub textbox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles textbox2.TextChanged dont know how to do the code for this End Sub its probably 1 line of code. All I need to do is the user enters some text for a description of something and it gets saved as a string,
View 3 RepliesForms :: Textbox Only Accept Certain Characters?
Jul 9, 2009How can I make a text box only accept certain characters?
View 2 RepliesTextbox - Text Box To Only Accept Numbers?
Apr 2, 2012I'm fairly new to VB.net (self taught) and was just wondering if someone out there could help me out with some code. I'm not trying to do anything to invovled, just have a textbox that takes numeric value from 1 to 10. I don't want it to take a string or any number above 10. If some types a word or character an error message will appear, telling them to enter a valid number. This is what I have, obviously it's not great as I am having problems.
[Code]...
Validate Textbox To Accept Numbers Only
Nov 15, 2011i need to validate the textbox such that in can accept numbers only but the entered no should be greater than 0 , it can be 0.1 and should be less than 101.
View 2 RepliesVS 2008 Textbox To Accept Only Numbers From 0 To 100?
Apr 8, 2010During runtime i want a textbox to accept only numbers from 0 to 100.How to validate this textbox?
View 2 RepliesVS 2008 Variable To Accept Textbox Value?
Mar 2, 2010Error1Value of type 'String' cannot be converted to 'System.Windows.Forms.TextBox'With this code. Variables are in Module1.vb and this code resides in form1.vb
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
MyFile = Me.txFileName.Text
[code].....
How To Make A Program Which Can Accept Switches Like Cmd.exe / K Or / C
Sep 24, 2010I am trying to figure out how to make a program which can accept switches like cmd.exe /k or /c basically i want it to accept commands by myapp.exe /c mycommand.i tried searching and googling but no luck. Also is there a way to run a function like that? And if anyone is wondering why then basically i am copying a script to my domain computer and executing it. This i already have done but problem is its just getting too much copyin multiple scripts and executing i would put everything in on and run em by switches.
View 2 RepliesMake .net Command-line Exe Accept Img%03d.png?
Oct 17, 2011Command line programs like ffmpeg.exe accept a parameter like so: c:> ffmpeg.exe -i img%03d.png img.gif This will grab all these images in the directory and use them inside the program:
[Code]....
Is there a clever way to implement this in my VB.net command line project, or do I have to parse the argument for the %0?
Make A Controlbox Accept The Backspace Key?
Oct 5, 2009I am trying to make a textbox accept on the numbers 1-4 & the backspace key. The numbers part is working fine, but it will not delete the number once it's inputted into the box using backspace. Here's my existing code:
Private Sub txtCode_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtCode.KeyPress 'allows the textbox to only accept 1-4 & backspace If (e.KeyChar < "1" OrElse e.KeyChar > "4" _ AndAlso e.KeyChar = vbBack) Then e.Handled = True End
Coding A Textbox To Only Accept Values Greater Than 0
Jun 24, 2009just a quick question. I'm trying to code a textbox that will enable a button, only when the value in the textbox is no less than 1. I've tried an if statement with txtBox.Text > 0 doesn't work Will it involve something with Min and Max values?
View 9 RepliesSetting A Textbox To Only Accept Numeric Values?
Dec 9, 2010I am looking into data validation as I need a way of setting a textbox to only accept numeric values. I have had a search for this and it doesn't seem as straight forward as I had hoped.
I have found a couple of possible methods, although the sites which I found them where very unclear on how they actually work. I feel strongly that I should know how all of my own programs work >_>
I have no actually got this to work with my program yet. Are there better methods than this?
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Dim allowedChars As String = "0123456789$,"
[Code].....
Make The Function Accept DBNull As A Parameter?
Apr 23, 2012I've got a little function that just changes empty and null strings to "null":
Public Function CatchString(ByVal stringValue As String) As String
If stringValue = "" Or stringValue Is Nothing Or stringValue Is DBNull.Value Then
Return "null"[code].....
I added the bit about DBNull because sometimes it gets null values from a database. This doesn't work, though, because it won't take DBNull as a parameter.I tried changing the stringValue parameter from a string to an object, but then the If statement gives this error:
Quote: Object reference not set to an instance of an object.How do I make the function accept DBNull as a parameter?
Forms :: Make Textboxes To Accept Only Numbers?
Jan 11, 2010On Form Level, I use following codes to make textboxes to accept only numbers,How to add these codes in main module, instead of of writing these codes on every form.
If TypeName(Me.ActiveControl) = "TextBox" Then
With Me.ActiveControl
If Not IsNumeric(.Text) And .Text <> vbNullString Then
[code]...
Make A Text-box Accept Only Numeric Characters?
Apr 28, 2011How to make a text-box accept only numeric characters (0-9) ? and give an error Message if it contains any alphabets or symbols.
View 4 RepliesLimit A Textbox To Only Accept Numbers, Backspace And A Certain Length?
Jun 9, 2011I 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.
View 5 Replies