VS 2010 Making A Calculator With 1 Textbox For Input And Answers?
Feb 5, 2012
so i am new to v basic and as you can see in the picture below that i have 2 textboxes just to put in them 2 numbers and then do mathematical calcualtions on them and a label up there that shows the answer so i wanted to make 1 textbox to type in the 1 st number then press the symbol for example + and then type the 2nd number and then press equal so the result is formed in the same textbox the only problem is idk how i searched google but i couldnt understand here is my source code
[Code]...
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Jun 30, 2011
I am making a calculator for a school project, I want to have it so it looks similar to windows calc ( with one button for each number & only one text box),My code has a few blank spots but so far it is :
Public Class calc
Private Sub Btn1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Btn1.Click
IOBox.Text = IOBox.Text + "1"
End Sub
[code].....
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Dec 12, 2011
I am trying to develop a simple math calculator that will allow the user to input the right-hand-side (RHS) of an equation into a textbox on the application and have the application evaluate the expression for a given value of x, which is also input
into the application by the user via another textbox.For example, if the user wants to evaluate the following expression,
y = 3 + 4*x + 5*x^2
then they would input into the textbox the RHS of the equation
3 + 4*x + 5*x^2
and then enter a value of x into the another textbox and click on the calculate button.I tried this:
answer = EquationTextBox.Text
but it doesn't work.
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Jun 9, 2011
I have a function in my textbox1 with the got focus event. I have a 40 textbox in my goupbox1.[code]I want that when the textbox1 gotFocus, all my textbox in groupbox1 under the for loop event will declare that only numbers are allowed to be entered in all the textbox. I manage to work with it but only in a single textbox. Here is my code for it.[code]Is there a way or would it be posibble to put this code # 2 into the code # 1? So that I don't have to declare 40 TEXTBOX which is not good.
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Jan 20, 2010
I have to write a program that allows users to specify two numbers and then adds, subtracts or multiplies them when the user clicks on the appropriate button. The out put should give the aritmatic performed and the result. I inserted an attachment on what it should look like also Public Sub btnCompute_Click() Handles btnCompute.Click " here at this one I am getting an error message Error 1 Statement is not valid in a namespace. C:\Users\Tiffney\Desktop\School projects\WindowsApplication1\Form1.vb 1 1 WindowsApplication1"
[Code]...
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Oct 1, 2005
how to make a simple calculator using vb?
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Mar 18, 2012
I have a small project from my university they have asked us to make a calculator , well everything is easy so far except the 3 last functions that I need help with.
as we all know vb has already some math functions implemented in its libraries the problem here those functions giving me wrong results I am trying to get math.tan(lblnum.text) math.sin(lblnum.text) and math.cos(lblnum.text)
they don't output the correct numbers any idea why?
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Nov 30, 2010
im making a calculator with multiple function but im stuck on two main parts on it. i wrote a big chunk of code for the total calculator. it adds, sub., multi., or divide the amount of numbers the user puts in and then it ask them to enter them in individually using a loops, radio buttons and a listbox. im stuck on the loop because it will as for the 1st number and the last number heres the [code]......
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Nov 3, 2009
I'm trying to make a calculator application. Just as practice, as I'm new to visual basic (.NET 4.0) coding. I've got this so far.
[code]...
Note, I've not programmed it to do operations yet, I'm trying to get this sorted out first. My issue is, when I enter my numbers, they do not store as a variable, they both store as zero.
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May 6, 2009
Ok. I just took my final for VB and the last chapter we did was on procedures and functions. Functions was the only thing out of this whole semester that I was just completely lost. I'm trying to work on this cause I'm taking Advanced VB next so I wanna know what I'm doing. So I'm trying another tutorial in the book and I'm really lost. Here is what the it wants you to do.
Retail Price Calculator
Write an application that accepts from the user the wholesale cost of an item and its markup percentage. (For example, if an item's wholesale cost is $5 and its retail price is $10, then the markup is 100%)
The program should contain a function named CalculateRetail that receives the wholesale cost and markup percentage as arguments, and returns the retail price of the item.
When the user clicks the Get Retail button, the program should do the following:Verify that the values entered by the user for the wholesale cost and the markup percent are numeric and not negative. Call the CalculateRetail function Display the retail cost as returned from the function.
Here's what the calculator looks like and my code so far.
Public Class Form1
Private Sub btnRetail_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRetail.Click
[Code].....
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Oct 18, 2010
So far this forum has been awesome answering my questions in full. I am very new to Visual Basic but I enjoy learning about it greatly. My question now is I now need to get all of my answers lined up neatly in the listbox using "zoning." Now I have know clue how to start this. Basically I need to make this..
Sum: 5 = 2 + 3
Difference: -1 = 2 - 3
Product: 6 = 2 * 3
[code].....
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Mar 26, 2011
i'm developing a virtual OS in vb2010. i want to know how i can move objects in the mouse during the runtime of the project? ; like when we move icons in desktop(i saw it in a youtube video, so i know it is possible xd) my second doubt: how i can i can detect if a position is fulled with an object; i want to create the effect of windows superbar; .
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Mar 29, 2012
If the title isn't clear; I want to be able to select any character from textbox without making some complex loops-dependent code (I can do that one). For example, let's consider this text is entered in a textbox:
I want some syntax when I tell to get me the index 1's value, it gives me "h", for index 5 = "o"... etc
So, anyone knows what's the right syntax,
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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 18, 2011
1. My input box does not prompt
2. Then a loop should be used to display in a list box the distance the vehicle has traveled for each hour of that time period.
[Code]...
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Mar 31, 2010
The object of this project is to create code for a 4 function calculator that takes a character string like: 5 + 123 + 6 = and generates a new string: 134 There are multiple tasks to be done. First the string must be broken into tokens; in this case, there are 6 tokens:
5, +, 123, +, 6, and =
Dim input As String = (txtIn.Text)
Dim x() As String = input ?????
[Code]....
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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]...
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Mar 31, 2011
I have a datagridview that is binded to an database file. I also have a group of textboxes that are also binded to the same database. I wanted the user to add new inputs from the textbox to the datagridview. I tried using the code
Me.tableBindingSource.Addnew But instead of adding the new inputs into another row and column. It edits the input that is on the datagridview that is currently on focus before I can add new inputs.
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Jan 23, 2012
How can i limit the user to input only one period in textbox cause in my textbox the user can input may periods on it??
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Apr 17, 2012
I have a text box that I only want the user to enter A, B, C or D (it'll give an error msg if anything else is entered)
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May 16, 2009
Description of Program/Events. I would like to come up with a number generator that takes the Total number (for this example I'll say 20), divides it by 2, and does alternating additions so the end result will generate a list like this:
1, 11, 2, 12, 3, 13, 4, 14, 5, 15, 6, 16, 7, 17, 8, 18, 9, 19, 10, 20.
I can understand the arithmetic, just can't work out how to express this in code. The end result would be save in a .Txt file (I have added a SaveFileDialog1 control, but figure I need to get the result before I work on the export).
Dim StartValue As Integer
Dim EndValue As Integer
Dim TotalValue As Integer
' Convert input to numeric variables.
StartValue = Val(StartNumTextBox.Text)
[Code] .....
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Feb 6, 2012
How to I convert/format a textbox entry 0215 to either 02/15 or 02/15/2012
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Jun 14, 2012
Recently I started a project with the goal being to have text that was inputted into a textbox stored within a three dimensional jagged array. The idea is that every time a button is pressed, whatever text that is inputted into the textbox is split into separate elements, where each word occupies its own element in the array. So for example, if a poem were entered into the textbox and the button clicked, each word of the poem would be assigned to a discrete element in the vertical dimension, and each line of the poem assigned an element in the horizontal dimension. After the text is stored into the 3D jagged array, the text should be cleared from the textbox and a counter should then ensure that on the next button press, the new text inputted into the textbox is stored in a discrete element of the array. Below is the code I have written so far, but I know that I am far from having anything might accomplish what I have just described.
[Code]...
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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:
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Jun 3, 2011
I have the following code. I would like to perform a if then check via a button click before the user processes the information.
Private Sub TestBTN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TestBTN.Click
If TBSearch.Text = "" & ".exe" Or TBSearch.Text = "" & "" Or TBSearch.Text =
[Code].....
I would like it to just check to see if the text box info has been entered in one of three formats.
1)blah.blah
2)blah*.blah
3)blah*.*
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Dec 2, 2011
I'd like to use the GeckoWebBrowser control to display HTML code that I type (or paste) into a TextBox. Here is the (nonworking) code I have:
GeckoWebBrowser1.Text = textBox1.Text()
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Mar 2, 2009
creating a mortgage calculator that display continuous information depending on the user input such as monthly payments, remaining balances, and interest paid. I am attempting to use a list box and am currently stuck. [code] Please use code tags when posting your code. Code tags are used like so.
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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 25, 2010
I have a problem with the code, I have input the valid username and password in the form textbox to input the strings in php, but it keep displaying the messagebox that says login failed.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
MessageBox.Show("Please enter your username")
ElseIf Textbox2.Text = Nothing Then
MessageBox.Show("Please enter your password")
Else
[CODE]...
I don't really know why it keep displaying the messagebox that says it failed when I have input the valid strings in the first place.
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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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