Make A Textbox Control To Accept Dates Only?
Feb 3, 2012
How 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
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Jun 7, 2010
How 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.
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Nov 10, 2008
hows 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.
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Mar 12, 2010
I need help with making a textbox only accept numeric values only, as in setting a timer interval.
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Dec 11, 2011
How Can I make TextBox accept only Latin characters and numbers.?
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Oct 14, 2009
I have an assignment that requires me to edit some code, I already did most of it but I need to make txtState control to only accept letters and the backspace key. I was never taught how to do this and I only know how to do it with numbers. Here is my code with everything done, including the format I was taught to do keypress in with numbers and backspace. Can someone show me how to replace those numbers pr whatever to work with letters?
[Code]...
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May 9, 2011
I would like to upload files using the ASP FileUpload control. However, if I try and increase the limit to about 10000 kB, it doesn't work and accepts files only upto 4 MB in size and I get an error saying that the connection to the server was reset. I referred: [URL]..but when I modified the web.config.comments file, nothing happened. Where am I going wrong?
Also, I wanted to know how this would work when I deploy it on the web server. I'm asking because in the code behind, I'm still giving a hard coded value for the path where the file is to be uploaded. How does this work?
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Jul 14, 2010
I 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.
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Jan 25, 2012
How can I set theback colorof a Disabled TextBox.
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Apr 2, 2011
I have a textbox where I have already put the keypress code to accept characters and number
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Jan 26, 2011
I 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?
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Apr 6, 2011
Given 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..
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Feb 23, 2009
Given 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
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Mar 27, 2010
Private 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?
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Apr 14, 2010
I wish textbox to accept only alphabets like A-Z and a-z..How to validate this?
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Jul 9, 2009
How can I make a text box only accept certain characters?
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Apr 2, 2012
I'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]...
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Nov 15, 2011
i 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.
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Apr 8, 2010
During runtime i want a textbox to accept only numbers from 0 to 100.How to validate this textbox?
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Mar 2, 2010
Error1Value 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].....
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Sep 24, 2010
I 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.
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Oct 17, 2011
Command 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?
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Oct 5, 2009
I 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
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Oct 15, 2011
I 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?
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Jun 24, 2009
just 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?
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Dec 9, 2010
I 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].....
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Apr 23, 2012
I'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?
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Jan 11, 2010
On 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]...
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Apr 28, 2011
How to make a text-box accept only numeric characters (0-9) ? and give an error Message if it contains any alphabets or symbols.
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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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