Force User To Input Number Not Letters

Jun 29, 2010

I'm attempting to learn VB in college. My first project is to create a program in Small Basic and then write it in Visual Basic. I'm looking for the equivalent of TextWindow.ReadNumber() from Small Basic in Visual Basic. I want to force the user to input a number not letters. I'm writing this program for the Console. Is this possible? During my testing I entered a word instead of numbers and the program crashed.

View 2 Replies


ADVERTISEMENT

VS 2005 : Force User To Input Value?

Oct 26, 2010

creating code to force user at runtime to place values in textboxes. This is what I have so far. I want to be able to force the user to have to place a value in the empty textbox and change the backcolor of the textbox back to default color after a value is placed.

HTML
Public Sub Subjectvalues()
Dim SubjectValues As TextBox() = {Me.subj_ba_txt, Me.subj_bed_txt, Me.subj_dom_txt, Me.subj_gla_txt, Me.subj_levels_txt, Me.subj_lotsize_txt, Me.subj_lp_txt, Me.subj_orglp_txt}
Dim tb As TextBox

[code]....

View 3 Replies

Text Box Formatting - Force User To Use Specific Type Of Input

Dec 16, 2009

I have a text box labled QTY, which feeds the QTY column on a datatable. the table then is ran through a function that takes the data and converts it to a string which my production machine can read. My problem is this, and its probably really simple (these problems usually are) how to i force the user to use a specific type of input on the txtbox so they would have to put the QTY in the format of 01 02 03 etc etc, i have it set to default to 00 but i want to force the user to haver to input 2 chars.

View 5 Replies

Create A Small Application That Will Force User To Enter An Even Number?

Oct 5, 2011

I need to create a small application that will force a user to enter an even number but i MUST use a loop. Here's what i've come up with:

Quote:

Dim bynombrepair As Byte
bynombrepair = InputBox("Entrez un nombre pair")
If bynombrepair Mod 2 = 0 Then

[Code]....

View 1 Replies

Generating The Number Of Textboxes Nicely When The User Input A Number

Feb 15, 2012

I am trying to draw textboxes when the user enters the amount of textboxes to be drawn on one form and the textboxes get displayed on the another form. I have found these codes online but it works with inbuilt codes I guess. That is, the number is already hard coded in the form.

[Code]...

View 10 Replies

Add User Input Number To Database Number?

Sep 5, 2010

I have an existing database that I want to add a number to that the user inputs. So lets say that in the database there is 4 carrots, and the user on the addinventoryform inputs 3 carrots and pushes a button. Now I want that number to be added to the database number so in the database there would now be seven carrots. I am using an oledb connection and cannot figure this out.

View 1 Replies

Ask User To Input The Number Of Textboxes To Display

Feb 15, 2011

I was about to create a program about CPU Scheduling (SJF Nonpreemptive), Now, I want to ask the user to input the no. of processes ,then based from the user's input I would display exact no. of text boxes where the user could enter the value for each process then store it in an array. But I don't know how to code the text box., I'm new to VB.net and I'm used to it's 'drag and drop' nature. I just want to know how the code to output this text boxes. and is it possible to have an array of text boxes?

BtW I'm thinking of using 2 forms here

Form 1 for the USER INPUT OF THE NO. OF PROCESSES

Form 2 for the output of TEXT BOXES

View 4 Replies

Check If Input To Group Number And Number Of Units Are Correct Input By Making Error Handling Exceptions

Sep 23, 2010

Part of my assignment is to check if input to Group Number and Number of Units are correct input by making error handling exceptions...

I have to check the following:
a) group number is neither 501 nor 062
b) number of units are NOT numbers
c) number of units is NOT a positive number

So my first question is, am I checking correctly? 2nd question is, How do I make sure my Exceptions will pertain to their correct respective things (a, b, and c.. above)?

[Code]...

View 6 Replies

Multiplication Table In VB - Popup Input Box To Ask The User To Enter A Number

Mar 21, 2010

I need to code a basic multiplication table in VB. I need a popup input box to ask the user to enter a number, then a label to display the multiplication table for that number from 1 to 9.

[Code]...

View 5 Replies

Standard Deviation Calculator - Random Number Of Numbers Input By User

Feb 19, 2011

Im working on writing a program for doing standard deviation and as of right now im running into one slight issue with subtracting my mean from the original numbers. I will post most of my code so you can get an over view but i mostly just want help on this one little part for now. Im going to be making a website for school and put some programming stuff on it so i wanted to make just some random programs for it so this is school related but not really homework. It's line 26 and 27 that this is relating to. When i put a stop in my code and look at the result of arrayDifferences it gives me 0.0 when it should be -1. I know i can go this route and say arrayDifferences(1) = arrayDifferences(1) - arrayAvg but seeing as how i want this to be a random number of numbers input by the user i cant do that.

CODE:

View 4 Replies

Check VB, Console Application, User Input To Make Sure They Entered A Valid Number?

Feb 2, 2012

Vb is not my language of choice , but I have to do this for school and I'm not having a very easy time with VB's documentation.I'm just creating a very simple console application that accepts user input: degrees in Celsius, and converts it into Fahrenheit. I want to make sure that if the user just hits enter without entering the degrees in Celsius, then an if else statement will catch and write to enter Celsius again.Here's what I've tried:

[Code]...

View 1 Replies

How To Do Array Of Textboxes When User Input Number Of Textbox To Be Loaded / When Button Clicked

Jun 22, 2010

how to do array of textboxes when a user input a number of textbox to be loaded and when the button clicked, the array of textbox that the user enters will appear?

View 1 Replies

Program - Permit User To Input Customer's First And Last Names And Number Of Days That Car Was Rented

Oct 6, 2009

The local car rental company rents cars for 29.95 per day with unlimited mileage. There is a refueling fee of 12.95; regardless of what the level of fuel is when the car is returned. Write a program that will permit the user to input the customer's first and last names and the number of days that the car was rented. The program should compute the total charge for the car that was rented.

I have to do this:
A. using a standard window
B. Using a WPF window (And I don't even know what that means)
C. Using a console application

View 14 Replies

VS 2008 Set That Input Box Will Only Except Letters Of Alphabet

Mar 21, 2009

we're doing a hangman game in VB 2008 and we are using an input box to enter a word that will be stored in the variable "word".How do I set it that the input box will only except letters of the alphabet. We are dealing with manipulating strings in class.I tried using the KeyPress event but that failed miserably.

View 13 Replies

Limit Textbox To Input ONLY Three Numbers And Letters?

Sep 29, 2009

How can we limit the textbox to input ONLY three numbers and three letters?

View 2 Replies

Force Only Number Entering In Textboxes?

Jan 9, 2011

I have more then 50 textboxes and I want to force the user to write only numerical values because if he enters a number or just leaves it blank it gives an error and I don't want to write a massive IF statement with all the textboxes to prevent that from happening.

View 7 Replies

Create An Invoice Number Using The Last Two Letters?

Mar 2, 2009

I need to know how to use a function to do the following: Create an invoice number using the last two letters of the last name and the first four digits of the zip code.

Example:

Name: John Doe
Zip: 11111

Invoice number becomes DO1111

View 4 Replies

Displaying The Number Of Occurrences Of The Letters A,b,c,d,e?

Mar 17, 2010

I'm having a hard time displaying the number of occurrences of the letters a,b,c,d,e I want to use IndexOf, but just don't understand how.

]Dim s2, s3 As String
Dim s1 As String
Dim a, b, c, d, e As Integer
Do While (s1 <> "finish")

[code]....

View 2 Replies

VS 2010 - Input Validation To Verify User Selected Input For 'cb Length Of Stay'

Jan 15, 2011

I need some help with the input validation of my application. Attached is the code that I have written as well as a screenshot of the front end. I specifically need input validation to verify that the user selected input for cbLengthOfStay is a number between 1-10 as well as input validation to verify the user input for txtMedication, txtSurgicalCharges, txtLabFees and txtRehabilitation is a positive numerical number. Please feel free to critique my attached code. [Code]

View 2 Replies

Make A Textbox That Just Write Number Not Letters

Jun 9, 2009

how can i make a textbox that just write number not letters

View 2 Replies

For Barcode - Input A Item Number In Textbox And If That Number Will Match In Your Database

Mar 7, 2012

I have a txtbox(for barcode).. if i input a item number in that txtbox and if that number will match in your database, the other information(shall we say, product type, item ID, etc..) will display in my other txtboxes..

View 5 Replies

Creating User Input With Textbox.text Input Then Displaying In Messagebox?

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.

View 6 Replies

Force User To Use The Topmost Form

Dec 10, 2011

I'm programming a Minesweeper clone in Visual Studio 2010, with VB.NET, as a Windows Form Application, and I'm having trouble with the Game Won and Game Lost forms. When I show those forms, I want the game form to still be visible, so that the player can see where the mines were, but I don't want the game form to be enabled until the Game Won or Game Lost form is closed. Exactly like Windows Minesweeper does when you win or lose.

[Code]...

View 1 Replies

Force A Connection String To User Scope?

Sep 1, 2009

I've tried searching and haven't found much useful information on this, I know it has to be possible, but I'm not sure how. I've got an application that bi-directionally syncs with an SQL express 2008 server. right now, I've got a hardcoded sa user in my conection string, however one feature that was asked for was to audit every change made by end users into the database. To implement this, I've created a user login and password for each user that is going to use my app (8 of them) on my sql server, however I now need to change the connection string to include each users name in the string. This is what I've got setup so far:

[Code]...

View 5 Replies

Force User To Close Window Before Proceeding?

May 9, 2012

this maybe an easy one for mos of you! I have a windows that is displayed as full screenThe window contains a series of images (movie posters) and the name below it. When you user clicks on a movie poster a new window appears (smaller window) in the middle of the screen.I want to force the user to close close on the small window before procedding. Currently if the user clicks outside the small window the full screen window comes to the front thus hiding the smaller window.

View 1 Replies

Force User To Make Combobox Selection?

Jun 30, 2011

I'd like to force a user to make a selection from a combobox.I've tried to test it by Combobox.SelectedText = String.empty as well as another version similar to this but a little different.When I test it, it will tell me that it is still unselected/blank even when I selected something.

View 4 Replies

Create A Random String With Number And Letters In 8 Characters Long In VB 2008?

Apr 16, 2009

I would like to ask for some on how to create a random string with number and letters in 8 characters long in VB 2008

View 1 Replies

Get User Input Data Into The Loop Of The Input Box?

Nov 3, 2011

Option Strict On Public Class Form1 Private Sub btnDistance_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDistance.Click 'The btnEnterSpeed click event accepts and displays up to ten speeds from the user'and then calculates and displays average speed

[Code]...

I cannot figure out how to incorporate the number of days into the input box then get it to loop and count the number of times the User inputs in the number of days. Then I have to incorporate it into the equation to get the total distance D = MPH * Hours. What I have right now wil not count up the number of days and locks up after I input one number and will not add anything to the listbox. Because I also have to make sure that they cant add nonnumaric values and the number of hours per day cannot exceed 20. I have put things in and taken them out but it has been 2 days and I am lost now

View 1 Replies

Use If Statements For Code So People Cannot Enter The Wrong Information Like Letters Into The Account Number Box?

Mar 27, 2011

basically just trying to use if statements for my code so people cannot enter the wrong information like letters into the account number box

If (txtAcountNumberInput.Text = "") Or (txtTelephoneNumberInput.Text = "") Or (ComboBoxPhonePlan.Text = "") Or (txtCallDuration.Text = "") Or (txtCallDate.Text = "") Or (ComboBoxCountryBeingCalled.Text = "") Or (txtTimeAsCustomer.Text = "") Or (ComboBoxEveningCall.Text = "") Then

[code]....

so you see up the top i have if all any fields ="" then error that's fine it's a problem i need to so if statements so "account number" and hone number" cant be letters etc and if they are a error box will come up how i have done it does do that but ti still continues down the code hence cashing when getting to declaring things how to fix this?

View 5 Replies

User Types In Letters, Application Shows?

Nov 27, 2011

Basically I just want it so that someone can type in their password but it comes up as Asterisks (*) instead of their password.I'm using VB 2010 and making a Console Application.

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved