Check Textbox Input Against A Text File?
Jan 17, 2011
I am trying to figure out how to read a text file and check the value entered into a textbox to see if it already exists. Its basically a validation list.
I found some code on how to read a text file, but I do not know what to do with the information.
Sub Main()
If RadioButton1.Focus = True Then
'Check TextBox1 value against list of known part numbers
[Code]...
How do I compare the textbox value to a line read from the file and stop if there is a match?
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Apr 19, 2011
I need to pull a random word from a text file in my resource folder (visual Studio 2010) and then have a user enter a letter to see if it is in the word. Yes, Hangman game. There is more, but right now I need to pull from that text file for a start. I know what I have is not even close to right under "Get Word Button", but I'm kind of confused about the process.
Public Class hangMan
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
Dim word As New Random
End Sub
[code]....
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Jan 1, 2012
how do i code this. my textbox length is 5 and i input only 2 numbers and i want it to save in textfile as 5 Digit ex. i input 2 number in textbox and should be save it as 00012 how can i code this?
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Feb 19, 2012
If my Category and Forum selection is incorrect I am sorry and feel free to move it. I'd like to have the users input in the message box that will show. For example: There is a textbox and the user puts in their name as Bob. Then the message box would be: What my main goal is, is being able to include the users input they type inside the textbox inside the message box.
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Sep 28, 2011
My objective is to, instead of entering in the data manually into the text boxes, I want to read in a textfile. The Calculate button will contain the code to read in the file and assign it to the appropriate textboxes. Save the separate file in the \bin\Debug folder.
The text file just needs to have 3 integers on 3 separate lines.The code I posted works without and errors, but.I am having some trouble integrating the Stream Reader.
[Code]...
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Apr 22, 2011
Lets say I have a multiline textbox that I would like to have checked for say, 1-2 digits over a max of 5 lines. I found a regular expression pattern answered on another similar question on here but it was not working for me even after modifying it a number of times.
I'm currently using the following without success.
Dim textCheck As New Regex("(^d{1,2}$
?
?){0,5}", RegexOptions.Multiline)
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Mar 15, 2011
regex - regular expression to check input on multiline textbox
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Jul 18, 2012
How can i check whether the text box is numeric or not? Because i want to do validation. but i tried many style still cannot work.
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Nov 30, 2011
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
If txtSubd.Text = "" Then 'If the input is blank
'DO NOTHING[code]....
So far this works, unless I enter random text. I need this only to run if a online .txt is entered.I tried System.IO.File.Exists, but thats more local files right?
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Oct 25, 2009
I am trying to bind a textbox to a binding source (using the IDE DataBindings Editor) and it works fine except for one thing: if I delete the text I get the subject error. What I want to happen is the datarecord field be updated to a dbnull value -- how do I get that to happen?
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Nov 9, 2009
Is there any way to use the TryParse method to check for letter text input?For example, a user needs to input a name in a text box. Is there anyway to check that input are all letters?
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Jul 7, 2009
i use visual basic 6 i already try making a button to play sounds. by clicking the button and the sound will out. so that i want to know were could i start, when you input words in textbox the program will speak what you have type in the textbox.
_
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Oct 31, 2011
i have a textbox and i want to find all of the words begin with the letter in textbox(for example a)
i know i should use "select * from tbl_search where Name like a% "
but it doesnt work for values in textbox.for example i wrote like this:
cmd = New SqlCommand("select * from tbl_search where Name like @value%") 'it gives the runtime error :"Incorrect syntax near '%'."
cmd.Parameters.AddWithValue("@value", TextBox1.Text)
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Jun 20, 2012
i am in need of some help getting my code working correctly like i am needing it to. Below is my code that when the user click on the textbox, it pops up a keyboard where they can click on any letter and it will type that letter into the textbox. Problem being is i can not seem to get the name of the text box to return so that it knows where to send the letters to.
[Code]...
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Jan 19, 2012
i need to take data input from a textbox such as this
[Code]...
i also need the times ignored, I know there is a way and probally a word for it, but im still new to vb.
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Feb 28, 2009
i am creating an app that when a button is pressed a batch file is executed and hidden from view.I have managed to get the output of the batch file to be displayed in a text box.
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Nov 16, 2010
Is there a way that a label's text is updated each time the input of a textbox changes? The textbox and the label are on the same form. I looked everywhere but didn't find a solution that worked.
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Feb 28, 2009
i am creating an app that when a button is pressed a batch file is executed and hidden from view.I have managed to get the output of the batch file to be displayed in a text box.
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Apr 21, 2012
It can be just a hint if it's too much code for the whole thing. This is the assignment:
Quote:
This form will collect from the user their name and e-mail address. It will display for them what they entered and then ask them to be sure they entered the right name and e-mail address. If the user selects �yes‟ from the message box, the name and e-mail address will be added to the data file.
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Sep 25, 2010
I want to create a simple program in Visual Basic 2010 that can take input from three text boxes and when pressing a button I can write to a file, the input can be letters or numbers or both of them about 10 characters long. The program should overwrite a specific text file and place a predifined text on it and the input from the text boxes must be placed in a certain
position of the file.
Example:
"This is the input from text box I want to include" the "input from the text box" shows how it should positioned the input from the text boxes inside the file.
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Jan 12, 2010
I have been struggling a bit trying to get this to work. I am trying to rename the file but can't seem to get it to work. The file creates but just doesn't seem to rename with the text in the text box. Below is the code.
Code to generate File
Private Sub btnOK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOK.Click
If File.Exists("c:Sample.txt") Then
[Code].....
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May 4, 2012
I am trying to do an if/then to check a textbox for text. I have a form that has name, address, etc. I need to make sure the form has a name in the txtName before it continues on.basically
If txtName has text Then
'continue about your business.
Else
err.message ("you need text.")
end if
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Oct 17, 2009
I'm making a program and i want to make it so it checks if the textbox as any text entered at all [code]...
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Feb 25, 2011
I am trying to do an if/then to check a textbox for text. I have a form that has name, address, etc. I need to make sure the form has a name in the txtName before it continues on.
basically
If txtName has text Then
'continue about your business.
Else
err.message ("you need text.")
end if
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Jun 4, 2011
Is there a way to check if the user has changed the value of a textbox?I try to acces a variable in one of my methods to compare against the value but I can not seem to be able to access it?
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Nov 13, 2010
If in textbox the default textbox value id 1,2,3,4,5,6 ...... upto 55then the following checkboxes would be checked according to the text display in text box...if textbox1.text =1,2,3 then in my webform checkbox1, checkbox2, checkbox3 would be checked ... on page load event...
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Jun 12, 2011
I'm struggling with my computing coursework in college and I though My issue is simple but I can't get it right. I need to validate the text into a textbox and check that it contains ONLY alphanumeric characters, but it MUST contain both, not either numeric or alphabetic, but some of each.The textbox should store information about a Street address, that's why both the street Name and the property Number have to be input. Spaces " " and points "." should also be allowed.If it helps, something like "12" or "St. Davis Street" should NOT pass the validation checks, whereas "St. Davis Street 12" will do.I would like to get it done with regular expression as I've been using them throughout my work, but I don't mind other solutions.I'm using Visual Studio 2010 Professional, 4.0 framework and Visual Basic.
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Feb 20, 2012
I am trying to obtain a file path that users manually enter on a web page, and then write it to the web.config file.
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Sep 18, 2009
I will try the way of the following code:
'Click on Button1 spell checks Text1 textbox
Dim strResultText As String
Dim sc As New SpellChecker
[Code]....
I can identify the error.But I don't know.
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Sep 22, 2011
I am trying to write code that will open a file with the input from a combobox from the user. My code is below:
[Code]...
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