Math Equation For Temperature Converter Buttons?
May 4, 2010
I've pretty much have this assignment done. My main problem is to get the math to pan out and it's making me crazy. It's gotten to the point of staring blankly at my screen for the last 4 hours.I'm hoping that someone would be willing to take a quick peak and give me a shove in the right direction. The purpose is to type in a number in a textbox then choose using a fahrenheit radio button and a celsius button to calculate the corresponding conversion in a label box.
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Jul 17, 2010
i got the following equations and want to apply it in VB.net, how do I construct it in VB.net.
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Jan 6, 2011
I'm doing a little app that basically has 2 text boxes. You'll enter Fahrenheit into TextBoxA and Celsius into TextBoxB.As the text changes in TextBoxA I want the equivalent Celsius value to be displayed in TextBoxB and vice versa.Is there a way to do it all in Xaml except for a Convert class that does the maths? So basically I want the TextChanged event of one textBox to pass in it's value into a Converter class that is evaluated and sent to the other TextBox and visa versa.
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Aug 25, 2011
I am new with Visual Basic and I am creating a aspx temperature converter application in Visual Studio 2010 where the user is able to input numbers into a textbox, choose what type temperature it is through a dropdown listbox, and choose what temperature to convert it to from a radio button list. The problem I am having is that I am getting an error when I try convertingrr something. I get the error "Input string was not in a correct format" and "Conversion from string "F" to type 'Boolean' is not valid." I've tried doing nested if..elseif..endif statements, but when I do that it just converts the 1st if statement and nothing else. Here is the code I have written for the conversion.
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Jun 4, 2009
Below is my code which is almost complete. The only thing that I need to do is set up an autoupdate feature that keeps an ongoing average of each temperature that I enter in. I have no idea how to do it!
Option Strict On
Imports System.Convert
Imports Microsoft.VisualBasic.ControlChars
Public Class Form1
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Feb 20, 2009
I have been trying to make this Temperature Converter and it comes up a error when i select a radio button,
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Mar 3, 2009
I am working on a school project to make a temperature converter that when fahrenheit is entered into textbox1 and then tabbed, the conversion to celsius, rankine, and kelvin is displayed in textbox 2,3, and 4.My instructor showed me how to input the code for this, but it isn't working correctly. I know I need more code to get this right but I am a newbie to programming and my instructor doesn't insruct very well. Can someone please tell me what I need to do to finish this coding? This is what I have so far:
Public Class Form1
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Feb 15, 2012
I decided to make a simple temperature converter (C to F vise versa) for class since I already had made a calculator. But for some reason, it won't work because it can't convert from string to double. How do I fix it?
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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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Apr 26, 2012
I'm trying to develop a converter of sorts, and I need it to always round up, however, math.ceiling is not working like I would like. The converter I'm trying to develop is a Canadian MMAR Calculator.Here is my code.
Public Class Form1
Private Property growtype As Object
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click[cod
For some reason, when the variable < .5 it rounds down, and when the variable is > .5 it rounds up, I thought math.ceiling always rounded to the highest nearest whole.The issue comes at growtype 2 and 3, this equation "(num1 * 365) / (250 * 1) * 1.3" where num1 = 18 returns 34.164, I want this to round up to 35.
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Mar 5, 2012
well i am having a couple of issues with this particular homework problem and this is my first programming class so there is probably quite a few mistakes well the homework problem is to take three double values entered by a user and display the largest and smallest using math.max and math.min and display the smallest and largest so i thought i could use a listbox and take the values that went to the listbox and assign variables to each so i can try to use each variable in the math.max and min but im not making it to far and i actually might be way off
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Mar 3, 2012
I have a piece of software with two tabs, inside each tab there are buttons (the user can add the buttons when they want). when tab1 is full tab2 should start to fill. I currently know how many buttons fit on the screen so I just say something like if buttons > 150 then start to populate tab 2 The problem i have now though is if the resolution is changed then a different amount of buttons can be displayed. so if I put my screen to 1280x720 some buttons are left of. I was thinking of detecting the resolution and then using different cases for different resolutions but this seems very inefficient im wondering if there is a different way?
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Apr 26, 2012
I want to iterate through an equation and modify a number e.g. Multiply it by 10, where there is one. How do I do this?
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Mar 11, 2010
I wanted to read input equation by user A+B and assign input user value to A and B to ask them to add and give answer. But I just can't get the code to work. I using VS2005 and VB.Net.[code]
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Apr 26, 2011
Can I use a function for more than one equation?
Program Description: Fortuitous Dice is a game that requires two dice be rolled, one at a time. If p and q are the numbers rolled on the first and second die, respectively the value of the roll in the game is determined as follows:
P Q Rule (value of the roll and condition)
Even Odd 2P + Q
Odd Even P + 2Q
Even Even P + Q When P not = Q
P When P = Q
odd Odd P + Q When P not = Q
3Q When P = Q
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Jul 30, 2011
I have a decent understanding of the logic, the content. I'm working on a puzzle and I'd like to write a short program. I'm looking to fill in the following variables: AB.CDE FG.HIJ (they're part of coordinates, and the puzzle is part of a geocache)
The puzzle asks you to determine which numbers correspond to certain colors, like this:
[code...]
I need to define A-J as >= 0 and <=9. I also need to say that each color is >= 0 and <=9, but that no color can be equal to another color (purple ≠yellow, orange, etc). some number combinations won't work. Purple and yellow can't be 2 and 5 respectively, because that'd produce a negative number. I'm guessing that there will be more than one possible result. So how do I create an equation that calculates this.
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Apr 14, 2009
I would like to read a user's input equation or expression as a string (such as "y=5*(x+6)" or "cos(3)^2") and have the program evaluate it mathematically. Does .Net have any classes that could do this? Obviously, the compiler can already take a programmer's coded equation and evaluate it. Of course this is a different matter, but is there not a way to harness that same power with runtime user-created equations? Serialization or anything?
The other option (I guess) would be to create my own equation-generator - breaking an equation down into a binary tree of the numerical values and the operations I suppose. Aside from being a nontrivial task, my program needs optimal performance as these equations are in large loops. At the very least, this would add several conditional evaluations to each equation run - dunno if that adds up.
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Mar 16, 2010
The project is "kWh counter", that is, a simple program that calculates the power usage.The incoming numbers are the Power of the appliance (lightbulb) and the voltage (230/120).The formula is W=P*t that is multiplication of the power and the time it is used.I thought to connect it with a timer and the passing secconds multyply with the power, and, write the ussage on a label.This would be something like a simple digital power counter.Note that the voltage is not necesary.I am from europe where the standards are 230V.
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Feb 9, 2011
I have an equation in the form of a string:
Dim Answer as Integer
Dim AnswerBox as New RichTextBox
'... Settings for AnswerBox
[code].....
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Jun 8, 2011
My assignment is to get the Get Monthly Income (Num1)Get Monthly Home Rent/Mortgage (Num2) Get Other Monthly Payments (alimony, child support, student loans) (Num3) Display Allowable Monthly Car Payment Display Maximum Car Value (interest rate based on credit) (answer) Public Class Form1
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Mar 26, 2012
What I need to do is automatically generate a specific PIN number based on the current date. The formula goes like this: MMDD + 1234 = PIN. (ex. Date = 3/26/2012 -> 0326 + 1234 = 1560; With 1560 being the PIN number. I then need the PIN number to display as text, but that's the easy part, I really just need assistance with getting the date information in the proper format for the equation.
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Nov 17, 2009
after a lot of research on formatting Maths equations, apparently using MS equation edior is the easiest way to do it. But, I have no idea how to use it in VS 2008.
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Dec 19, 2010
I am rotating a picture dependant on the mousemove.
Private Sub PictureBox1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
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To simplify the part I am having problems with: rotationX = CurrentPositionX + ((InitialPositionX - MousePositonX) / SlowDownDivisor)
As an example, this occurs in both X and Y; If I click and drag in the X + Direction and release the mouse button it does exactly what I want, rotation in the positive direction. If I click and drag in the X + Direction and then drag in the X - direction, the rotation continues to be positive, it doesn't reverse. If I release the button and then click again and move in the X - direction the rotation is negative as it should, but it will continue to rotate in the negitive direction until the button is release.
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Mar 9, 2011
commercial dll to be used in vb.net to calculate equations of any complexity? pass an equation as a string form and to get the final result.
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Mar 22, 2011
In our school theres a programming class and the teachers gone for the week and the sub is starting to get very frustrated, so I offered to help in any way i can. I have never programmed Visual Basic but I have programmed Ms-Dos, Javascript, HTML, *.vbs, *.ahk, *.gml, and a variety of other languages.
The class is going to build a program that calculate how many rabbits are born in a family. So when they click the button it shows in a text box the actual equation and then the answer after the equal sign that where i assume concatenation comes in.Here's the code I've thrown together for when the buttons pressed:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim RabitAmount As Integer
Dim ShowEquation As String
[code]....
I got the equation to answer it self and show in the text box but it won't show the equation?
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Jul 19, 2011
I want to display an equation prior to solving it. Obviously in MS word etc I can use equation editor to write an equation, but I'm writing my own program.
Is there an easy way to display an equation. Obviously I could use text to write eg as text "a=b^2-3(c-d)/5" and everyone here would have little problem interpretting what I want but I want this to be accessible to 12 year old children.
Alternatively I could try and manipulate lots of text boxes one on top of the other to try and explain what I'm doing
The third alternative I thought of was to write in equation editor export the graphic and then import a graphic.
I'm sure I must be trying to reinvent the wheel - which I believe is the one thing OE programming is supposed to avoid.
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Apr 27, 2012
First off the listbox needs to show the equations for the number entered between 0 and 12 example:
1+1=2
1+2=3
1+3=4
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Feb 20, 2009
I put this mathematical formula in VB 2008 Express Form and I have the result show in TextBox and every thing is good so far and my question is if I have a table of numbers for example if the answer in the TextBox is 0.00098 and my table show :
0.0001 to 0.00100 = 7
0.00101 to 0.002 = 8
0.00201 to 0.003 = 9
Etc
I need the number 7 to be displayed in label 1 so how can I do that?
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Jun 19, 2009
I store a formula in the database such as the following:GrossIncome+(Overtime/0.5)-Deductions=BasicNetIncome
I am able to substitute the string representations with actually values entered, thus:1000+(150*0.5)-100=BasicNetIncome
Then I remove the '=BasicNetIncome', thus:
1000+(150*0.5)-100
How can evaluate the above equation to return a result:
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May 30, 2012
I have a boolean condition that I want tthe program to recognize changes when they occur. Currently in order for the program to recognize a change I must restart the program.I have tried using a public timer but that didn't work.
Specifically.....
D1A.Close()
D1A = File.OpenText("MEASURE UNITS.TXT")
D1B = CStr(D1A.ReadLine)
[code]....
I am re-writting the text file "MEASURE UNITS.TXT" labeled (D1B). Depending on this boolean equation different options become available in other parts of the program.I need the program to re-adjust the boolean equation on the fly.
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