Creating The Subtract Button On A Calculator?
Jan 7, 2010
I'm completely new to programming and wondered if you could help me. I've designed a simple calculator that can add numbers together but am now trying to create a subtraction button. This seems more complicated, I've searched various forums but am a little confused and wondered if any of you can help or point me in the right direction. Here is the coding I've done for the Add button (cmdPlus):
Private Sub cmdPlus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdPlus.Click
[Code]...
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Jan 11, 2011
I have built a small VB.NET Calculator but whenever I add, subtract or multiply by 0 the answer is always 0. Here is my code:
Spoiler
Option Explicit On
Public Class Calculator2
[Code]....
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May 19, 2010
Can someone show me an example of how to add or subtract when you have the button value going into the textbox like this[code]...
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Dec 2, 2010
i am creating a backspace key for a calculator. first of all a currency needs to be chosen by clicking a button, when for example the is clicked the text is entered into the texbox. But when i use the backspace it deletes here is my code..
Private Sub btn_pound_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_pound.Click
'Enable the keypad when the pound sign is clicked,Disable the curency buttons after'
pnl_numbers().Enabled = True[code]....
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Sep 23, 2010
I got every other operation button to work besides sqrt, and percentage. I've done the same thing for addition, subtraction, etc. and it doesn't seem to work.
here's my globals
Public Class Form1
Private first As Double
Private second As Double
Private oper As String
[code]....
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Apr 19, 2009
Since it's been a while since I have done anything in VB and I wasn't that accomplished anyway, I thought I would VB.net (VB 2008 Express) and fiddle around with it. I am in the process of making a calculator, which so far only adds...the other functions will come. The adding is where I am having difficulty. Here is what I've got:[code...]
I am not adding the right things...I know, but I am running out of ideas...too tired, but can't stop now. Just too close to have one function of the calculator working.
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Dec 8, 2010
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.
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Dec 9, 2009
What code to use in a payroll calculator I am making. The requirements are
1. Name of employee.
2. number of hours worked
3. pay rate
4. percentage of state tax.
5. percentage of federal tax.
6. percentage of FICA tax.
How I would go about this.
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Sep 24, 2010
I am creating a VB 2008 change calculator as an assignment. The program is to use the amount paid - the amount due to calculate the total.(this is working fine). After that, it is to break that amount down into dollars, quarters, dimes, nickels, and pennies. The problem I am having is that sometimes the quantity of pennies, nickels or dimes will be a negative number. For example $2.99 = 3 Dollars and -1 Pennies.
Option Explicit On
Option Strict Off
Option Infer Off
[code]....
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Feb 17, 2010
I'm creating an amortization schedule for my mortgage calculator and I'm having a problem with a loop.
[Code]...
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Mar 15, 2011
[code] My problem is the CE button and I'm supposed to be able to add 1 + 2+ 3 + 4 + 5 = 15, but when I calculate it only does the 1 + 2 its supposed to reapeat last process each time you hit the equal sign.
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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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Mar 23, 2010
I am tring to make a price check calculator and in order for me to do that i need my users to choose their price level.
Right now i have a small web form created and its quite simple but i need my button for onclick to do link to corresponding forms that it goes to...Right now i have it as:
Public
Partial Class WebForm1
Inherits System.Web.UI.Page
[Code].....
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Nov 29, 2010
I am making a calculator. I need a button that functions like a Backspace-button on a calculator. Erase the last inserted char, or what ever may work.
I use:
Button1
TextBox1
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Apr 7, 2009
i m working on a payroll software, and for user facility i want to provide calculator and Microsoft excel file with our module, so there is no need to explciltly open the calculator,,whenever it is required,,,,,i want the code that provide me calculator by clicking a tool strip button on mdiform?
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May 20, 2010
I'm doing this program in Visual Basic and its supposed to calculate the GPA by entering the completed courses in a listbox. Its does calculate the GPA as its supposed to by adding the values using a "Add to list" button, but i have to also update the value of the GPA if a remove an item from the listbox using a "Remove from List" button. Is there a way a remove the line and also make the subtraction work.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddtoList.Click
'This is the Add button
course = txtCourseName.Text
[code]....
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Jun 15, 2010
I want to have the code so that it creates a button in a random location then when you click that button it changes its location so on and so forth
Here is wat ive done so far
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Initialize()
[Code]....
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Jul 14, 2010
Form1.ToolStrip1.Items.Add(New ToolStripButton With {.Text = TextBox2.Text, .Tag = TextBox1.Text, .Image = fav,.}
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Nov 3, 2008
As part of a school assignment I have to design a program that allows people to add items to there backpacks but only upto a certain limit depending on age height etc. I completed the code to work out each packs maximum weight and thought I had almost finished but... Now I am trying to use a list box to add up the total weight of items added to each pack (below) but rather than add up I am just assigning the value 5 to the pack1weight.
Code:
Dim pack1weight As Integer
Dim tentW As Single
Dim maxweight1 As Single
[code]....
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Feb 20, 2011
Im new to vb.net but learnt quiet abit, im using a book and getting to the stage where it gets confusing, anybody know of any videos or a better way to learn? first of all I have connected to a database but i want to beable to get the servername, username and password from a registry file instead of putting it directly into the code,
Also in the database I can add and update records etc... how would I make it take the current value in the table and add / subtract to it then update? eg. in the table i have 60, i want to add 10 to the value so 60 + 10 = 70 update record with 70. etc.
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Aug 25, 2009
I would like to subtract a month using vb6.. Which function to use??
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May 13, 2012
I wonder how I can subtract cells in VBA? I want to use an For-loop that subtract column "B" with column "C". I want it to take all the values in kolumn "B" minus ( - ) all values in column "C" in the whole range.
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Sep 11, 2010
I'm stuck on writing a query to subtract "Amount to pay" with "amount paid", my assignment sheet says to 'use two queries and subtract in vb'. but i still don't really understand it
What the program is supposed to do is:
1. the user types in a specific customer id
2. the button "What is owed by the Customer ID?" runs the query
3. the query returns and opens a HTML with the customer id, the amount to pay, the amount paid and the total amount.so far what i've come up with is:
sSql = "SELECT CustID, SUM(AmountToPay) As AmountOwing, SUM(AmountPaid) As PaidOff FROM Order, Payment WHERE Order.CustID = Payment.CustID AND CustID = " & sSearchValueA & "GROUP BY CustID;"
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May 19, 2011
I have 15 ofTextBoxs.1 to 5 is TextBoxs have a fix value and 6 to 10 is TextBoxs where the user
can input some value ,finally the textboxs 11 to 15 as a result What i want to do is when user input the value in textboxes(6) then the result automatically raise in textboxes(11).Then when put value in textboxes(7) then result automatically in textboxes(12) and also..
[Code]...
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Dec 12, 2010
I am creating a program for a homework assignment and was needing some help on how to create a sub procedure for a radio button.
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Jun 23, 2010
Hey everyone I need some help, I created a bat/vbs (created two just incase) file that takes images that users have scan and re-names them places them into differnet folder and zips them so they can be uploaded that night.
When the user done scanning they click on that bat/vbs i created so it can do everything i stated above just it just opens a dos propmt or nothing happins to viewers eyes..
I want to create something in Visual Studio that calls that bat/vbs and shows them a progress bar so they know how long its going to take instead of them looking at a black DOS promptI do have visual studio 2010 and i am not really know to much about programming i start reading some books but im still a noob =)
Dominick
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Jan 9, 2009
I am writing an application that requires button controls to be created at run time because the amoutn of controls created depends on data retrieved from a database.
I believe I am creating the control properly but I am not capturing the click event.
Code example:
Dim myButton As Button
myButton = New Button
myButton.id = "id"
[Code]....
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Mar 2, 2012
Im trying to make when you click a button to make a drag-able text box. But i cant seem to find anything on creation one with a button.
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Jul 1, 2010
I am stuck on the following:
[Code]...
Here I am creating a new button and wanted to use it when pressed. I don't know how to do it, you can have a look at IF condition above.
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Dec 8, 2010
I'm looking to design a calculator that adds and subtracts binary numbers. I'm new to this program and stumbling on where to start?
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