Code For Simple Calculator?
Jul 12, 2009code for calculator using vb.net
View 2 Repliescode for calculator using vb.net
View 2 RepliesI 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 Replieshow to make a simple calculator using vb?
View 11 RepliesI 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 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?
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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]....
Is there anyone can post a simple code using vb,that start building a simple games ?
View 2 RepliesI 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.
how to code the calculator?
View 2 RepliesI was writing this VB script to run in HTML for school and ran in to a problem, which my debugger says it is at line 33?
<html>
<head>
</head>
<body>
[code].....
How to code the sqrt, log, sin,cos and tangent buttons please write down the code for the mentioned buttons
View 1 RepliesI wrote a Visual Basic program using the PMT function to calculate the monthly payment for a loan. Also calculate the Total of All Payments made over the term of the loan. This is how it should work, The user will input the loan amount in a text box. The user will use horizontal scroll bars to input the term of the loan (years), and the rate of the loan. As the user clicks the scroll arrows for years and rate their values display on the form above each scroll bar. When the user clicks the Calculate button the program will output values for the amount of the monthly payment and the total of all payments for the term of the loan. The two scroll bars are set to their mid-points (15 years and 10%), I am unable to get to show this values in their respective text boxes for some reason. [Code]
View 3 Replieso change this template use Tools | Options | Coding | Edit Standard Headers.'
Option Explicit On
Option Strict On
Public Partial Class MainForm
[code].....
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 am trying to write a code for a exponentiation calculator in VB2008?
View 2 RepliesI am currently writing a program in Visual Basic 2008 express edition to read and write to tags on an Omron PLC. I am using the DeviceXPlorer OPC Server V4.1.1.1 program to connect to the Omron PLC. I have made two programs, one is a form program which works fine, two is a windows service program where it does not let me connect to the OPC Server. The connection code is identical, the only difference is the windows service code is called by a timer. The timer works fines and jumps into the connection code, but stops at the line
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Build calculator using visual basic 2008
View 1 RepliesI am coding a simple calculator and I need the textbox to show the previous entries when I enter them. I hear the best way to do this is by Append Text? For example I click 3 Then + The textbox will show "3+" etcetera.
View 1 RepliesI am trying to write code with IF statements for a payroll calculator. The first IF statement is getting a bit confusing. I have three text fields that I want to ensure have data before proceeding with the next set of code. This is the part I am not sure I am doing right.
IF IsNothing(txtHoursWorked.Text) OR
IF IsNothing(txtEmpName.Text) OR
IF IsNothing(txtHourlyPayRate.Text) Then
[code]....
I have written the below code for a payroll calculator. When I run the program, it gives me my own error message box no matter if my number of hours fall within the 5-60 hours range as I have stipulated. Is there something wrong with my code? (well, obviously there is something wrong--I just cant find it!)
CODE:
'This program calculates the Gross and Net Pay as well as the Tax Deduction amount of an employee's wages when given the input of Employee Name, Tax Rate, Hours Worked, and Hourly Pay Rate.
CODE:
I'm a rookie in Visual Basics 2008 and i am trying to make a program to communicate and read tags from an Omron PLC. I am trying to connect to the PLC via devicexplorer opc server, because it can let me read DInts and Reals from the PLC tags. I have referenced Microsoft ActiveX Datas Objects 2.5 Library and OPC DA Automation Wrapper 2.02. I have made some code which connects to the PLC "in a form", but I cannot use the same code and connect through as a Windows Service program.Here is my code,
Public Sub OpcConnect(ByRef Items() As String, ByVal PLCType As Integer)
Dim j As Integer
Dim TempSvrHandles As Array[code].....
Note: this code is run in a timer on the windows service, it connects properly to the "RSLinx OPC Server", but "Takebishi. Dxp.1" (devicexplorer shortcut) exits the sub routine at MyServer.Connect(PLCServer) ' connect to the opc server.
provide me a simple code to connect .net and MSAccess? also provide me the details of where to find ADODB control.
View 6 RepliesI'm trying to do the very basic add "hello" to a button. The instructions tell you to click on the button the tutorials say the code that is supposed to show starts with "public class form1" but when I double click the button it seems to open the whole code of the template, not the button. (and no where in the code shows the "private sub button1_click")
View 17 RepliesSimple Code lookup to get Description I have a static list of Street Type Abbreviations and their associated Street Type Descriptions: RD to Road. I have the complete list needed. There are 37 elements in the list - 37 Street Type Abbreviations with their associated Descriptions. The lookup will only happen once. The input lookup field is in a single field: stType. Not trying to get fancy. but what is the best approach? Dictionary, List, two dimensional array, etc. Started with Dictionary but the .Add was getting redundant. Two dimensional array let me initialize the values, but searching an old school loop.
View 1 RepliesI've designed a Arithmetic Calculator. I can get my additon button to work but not my multiplication button. My result total comes back as 0.
[Code]...