I want to create a simple calculator using only 1 textbox , 1 button and 1 label, but I don't know how to create the code.
for example if i write : 53+35-33=
and if i press the button it will calculate and the answer the label will show the answer (55).
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.
I am doing a tutorial for a simple calculator. My question is how can I add code to make a botton that add my tax % to the total amount I have.
Option Explicit On
Public Class Form1
Dim firstnumber As Single
[Code]......
how to build a simple calculator in VB; i got the interface with buttons and text box alredy and i figured out how to put more then one number using buttons alredy(Disp.Text = Disp.Text & 1) , Looking at the windows calc, how do you store the number u just entered into a text box and alowe user to enter another to performe calculations, what code should i use for equal button and etc.
View 10 Repliescode for calculator using vb.net
View 2 Replieshow to make a simple calculator using vb?
View 11 Repliesi am going creating a simple function calculator, but I had to first do a design documentation proposal. I now have to update the project proposal with a storyboard or list of menu and screen items to delineate my proposed user screen and menus.aside from the calculator itself there will not be any menus.I also have to list any user data inputs and outputs my application will require and produce, which i assume i can put any numbers that the user inputs into the calculator and their results.
View 5 RepliesI am new in programming, I am trying to develop a simple calculator but I am unable to connect the addition, subtraction and equal sign buttons.[code]
View 1 RepliesI've got the bulk of a calculator up and working, however it doesn't like multiple operations. For example 3x5+2= brings up 10 (i.e. 3+5+2) and even doing it in two parts doesn't help, if I enter 3x5= I get 15 then +2= gives me 32 (i.e. 3x5=15 15x2=30 30+2=32). Also I am getting trialing zeros in my command line I can't debug.Note that lblcommandline displays the whole function and lbldisplay just displays the current imputted number.
Public Class frmSimpleCalc
'This code is run when the program starts. Here we 'declare' or basically, define which variables we want, what they are and such.
'So, for this example, we need two variables. The number we are CALCULATING and the one which we will CALCULATE FROM.
Dim lCalcNumberMaster As Long 'The master number is the solution, the number stored and displayed when we click equals.
[code]....
I am making a calculator Program to start off on visual basic. I got it to work with MsgBox, but now I'm trying to get it to work with the Print.
MsgBox Example
Public Class Form1
Private Sub Button1_MouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Button1.MouseClick
Dim Pizza As Integer
[Code] .....
Say I type in 6 and 6 I'm getting errors saying Example: Conversion from string "youranswer is 12" to type 'Integer' is not valid. I've tried many things, but it's not working. I want to know what I need to do to get it to print out how I want it. Do I need to do some conversions properly somehow?
Simple Calculator multiplication and division Trying to make a simple calculator. My program inputs numbers and arithmetic operations thru commandbuttons. The numbers, num(n-+1), are odd and the operations, op(n), are even. The code is based on the even op string. Every time a op occurs it is stored in numop(n) to be accessed later. I have all the other operations in sequential order: "*"," "/, "+" and "-". The other similar For-Next loop are the same just interchange the two * for /, +and -. The "+" and "-" work fine in this configuration.
My problem is the multiplication and division does not occur. The numbers and operations line up. The numop(m)=g*h should yield numop(m)=num(1)*num(3). Is there some sort of code to be inserted to accomplish these multiplication and division operations?
[Code]...
I am trying to make a simple resistance calculator for practice. I use text boxes to let the user input the current and voltage, and then a combo box for the units and then a list box to display the results. For some reason no matter which units I select it doesn't convert at all. For example 1/2 will always show up as 0.5 in the list box no matter which units are selected from the combo box. Here is my code.....I know that there is more cases but I only put one to see if it works before I write all of the cases.
Public Class Form1
Dim unitsA As String
Dim unitsV As String
[code]....
I need a inline calculator for a textbox.
When the user types 45*10+5 i need to have the answer displayed as 455 in the same textbox
Any one with a briljant idea of how to sovle this.
im supposed to create a mortage calculator but my teacher gave us no hints as to what we had to do so could someone explain wat its supposed to do in a nut shell
View 3 Replieshow to create calculator in vb.prashant
View 3 RepliesI am trying to make a calculator with one textbox and 16 buttons. Buttons are:(0,1,2,3,4,5,6,7,8,9,+,-,*,/,=,C). So here is code for now:
vb.net Private Sub nula_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles nula.Click
TextBox1.Text = TextBox1.Text & 0
End Sub
Private Sub jedan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles jedan.Click
TextBox1.Text = TextBox1.Text & 1
[Code]...
When I add those numbers and operators its easy, but how make operations really work now?
ive got to create a BMI calculator using metric units, when i enter my data, it doesnt work (i put in 1.5m and 90kg but the answer comes out at 3, and in clearly not anorexic heres what ive got at the moment
Dim BMIResults As New frmBMIResults
Dim Answer As Integer
Dim BMIAnswer As Integer
Answer = CType(tbHeight.Text, Integer) * 2
BMIAnswer = CType(tbWeight.Text, Integer) Mod Answer
'BMIResults.Show()
'Me.Hide()
i had to create a hash calculator using vb2008?
View 2 RepliesI'm taking an introductory programming course, and am completely flummoxed as to what I'm doing wrong with my program. The problem seems to be in my arithmetic, as the program runs fine; it just doesn't produce the correct result when compared to the professor's control model.
I need to create a mortgage calculator, using the following formula: monthly payment = interest rate * loan amount * ( (1+ interest rate) ^ months) / ((1+interest rate)^months)-1) )
We have to use that formula, no other one. If anyone can spot an error in my code, please let me know what I've done wrong!
The code I've written is as follows:
CODE:
I am trying to create a calculator, which can accept numeric keyboard imput, as well as button clicks, and display the number in a label.
Why does the numeric keyboard input work in this instance
Public Class Form1
Sub Form1_KeyPress(ByVal sender As Object, _
ByVal e As KeyPressEventArgs) Handles Me.KeyPress
[Code].....
Even if I press a keyboard number before pressing the button(so there is no need to clear the label if the button is pressed first etc), the number is not displayed in the label. And even if I completely comment out the code for the button-click, the keypress event still does not display the number in the label. It is as if just having the code for the button completely disables the keypress.
I am trying to figure out how to properly code to create a Commission Calculator. Is anyone able to provide assistance? I will provide the code here:
[Code]....
I have probleam with my code, currently i am create scientific calculator which have function sin, cos & tan. The code i create it not working because every time i convert the function it will show 0 as answer. how to correct my code here.
Public Class Form1
Dim total1, total2 As Double
Dim [Operator] As String
Const conversionFactor As Double = Math.PI / 180
Dim result As Double
total2 = Val(answer.Text)
[CODE]...
I just switched to VS 2010 for Windows phone 7 developement... I am trying to create a basic BMI calculator app...This is what I have now...
CODE:
However I have these errors which are as below
Quote:
CODE:
Quote:
CODE:
Did I forget to declare something? This does not happens when I am using the divide and multiply in VS 2008.
Error Screenshot as attached below...
I am building a scientific calculator.
1. After I clicked the Sine button, I get the result in a textbox.. When the result is there, for example: 1 radians Sine = 0.8414.... I can still put numbers at the end of this result.. like button 5 will be 0.84145, so how can I disable that?
2. After I get the result from a calculation, the textbox should be cleared when I insert a new number.
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]...
i am trying to create a kind of calculator for fuel usage with menus lemme show ya the code:
Public Class frmFuelCalc
Private Sub AboutFuelCalcToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AboutFuelCalcToolStripMenuItem.Click
MsgBox("Guru Software" & vbCrLf & "Fuel Calculator Version 1.0.0.0" & vbCrLf & " Copyright 2011 © " & vbCrLf & " Guru Software Design â„¢ All Right Reserved", MsgBoxStyle.Information, "Fuel Calculator")
[code]....
So I was assigned to create a calculator that can calculate the sum, product, difference, & quotient using an external class. Unfortunately my teacher isn't exactly the best and I'm new to VB, I know how to create a calculator in VB .NET but when it comes to external classes,
View 3 RepliesI need to create a tiny calculator using the basic operators of Addition, Subtraction, Multiplication, and Division. My professor hasn't really covered much of this, so I'm not to sure how to create it.
View 6 RepliesI have this homework assignment where we have to create a pay calculator where you would enter the total minutes worked and the hourly pay rate. and then i have to create the code to show what the total weekly pay would be. I have to display the Hours Worked: and the Leftover minutes: I also know that the formula to calculate the weekly pay is totalMinutesWorked / 60 = hoursWorked and i have to use the Mod operator. [code]
View 2 RepliesI'm wondering, is it possible to create a (REALLY) simple web server in VB.NET? I may be wrong, but don't you essentially just need a listener for port 80 and a way to send pages to the client?
View 3 Replies