Best Commercial DLL To Calculate Equation Of Any Complexity?
Mar 9, 2011commercial 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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Password Validation For Complexity Requirments?
Aug 25, 2009For fun I decided to make a password changer tool. The app pulls the local admin account from the registry so I can change it. This is nice because I don't have to select the account from the list, it just pulls it from the registry. So Here is my issues. I want to be able to have the code verify the password meets complexity requirements before it is changed. For example I don't want to be able to put any old password in like "password". I have searched and searched but to no avail. I am not asking for someone to write the code fro me
View 3 RepliesHow To Copyright A Commercial Application
Jul 15, 2009If you want to create a commercial application and sell it, what is the correct way to obtain a copyright or trademark to the program and its functionality (if you can even do that) If I wanted to give to a potential client to demo, I want to cover myself in case it gets in the wrong hands (read "another developer") Is it as simple as saying "Copyright so and so" in the App Settings?
View 13 RepliesFree Or Commercial Code Analysis Service For VB?
Dec 7, 2009Anyone know a good code analysis service or tool for vb.net? Like the one for c# with visual studio 2008 team edition or style cop for c#
Update:I am only using the visual studio pro in my new work place,so I could not use the code analysis for visual studio 2008 team edition
Set A Form Topmost Setting Only For One Commercial Program?
Mar 27, 2011Is it possible to set a form Topmost setting only for one commercial program?Say my program is A and commercial program is B... I want Topmost setting for program A will only work when I working on program B, and when I switch to other program than program B the Topmost setting for program A back to false.
View 2 RepliesCall Com Function - Control A Commercial Backup Product
Nov 29, 2011I'm writing a VB.NET app that will control a commercial backup product. One of the things I need to do is loop through all existing jobs and look at the source drive. I am able to do this in VBScript very simply like this:
[Code]...
However nothing I try in VB.NET works. I'm pretty sure it has to do with the fact that the com functions are returning variant data types and arrays (specifically GetVolumes). I have tried using string arrays, object arrays, and even wrapping the return value in a VariantWrapper and I always get errors such as "not implemented" or "the parameter is incorrect." If anyone is bored and wants to write some code I'll gladly give it a shot and report back.
[Code]....
Add Commercial Or Spots In Running Media Player Video File?
Dec 11, 2011I m design a media player in vb.net..now i play 1Gb video movie.. i want to set the commercial time like every 15 mint my video automatically stop and some commercials play automatically after complete commercials my video[code]...
View 6 RepliesAsp.net - Complex Linq Query - Add A .Where() Or .Any() Predicate To Reduce Query Complexity (in VB)?
Sep 14, 2010I have to join two main tables, and I need to filter the results by elements in an ASP.NET web form. These filters are created on the fly so I have to use a lot of where extensions to filter the query. I want to execute the query with as optimized SQL as possible.
I am first doing a simple join between TW_Sites and TW_Investigators. Then there are two sub-tables that are involved. TW_InvestigatorToArea and TW_InvestigatorToDisease. While most of the where clauses are working fine, I have found a performance issue that won't be an issue right now, but will be an issue as the table gets bigger.
The arrays DiseaseCategories and DiseaseAreas would be the results of a CheckBoxList result.
Protected Sub LoadResults()
'Get Dictionary of Filters
Dim FilterDictionary As OrderedDictionary = Session.Item("InvestigatorFilterDictionary")
' Initialize LinqToSql
[code]....
Date Method - Calculate The Number Of Years For My Calculate Age Event Handler
Mar 30, 2009I am trying to calculate the number of years for my calculate age event handler, however i am apparently missing a method or whatnot because im trying to calculate the age , can anyone suggest help on this. I need to subtract years to get my age but when i try the birthdate.Subtract (currentDate) method i get an error about not able to convert from LONG?
So below is what I have.
Private Sub btnCalculateAge_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateAge.Click
Dim currentDate As Date
Dim BirthDate As Date
Dim Age As Long
[CODE]
Iterate Through An Equation?
Apr 26, 2012I 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?
View 4 RepliesUser Equation N Value
Mar 11, 2010I 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]
View 1 RepliesUsing Function For More Than One Equation?
Apr 26, 2011Can 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
Equation With Multiple Possible Results
Jul 30, 2011I 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.
Convert String To Equation?
Apr 14, 2009I 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.
How To Make An Equation With Timer
Mar 16, 2010The 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.
View 7 RepliesHow To Solve An Equation That Is A String
Feb 9, 2011I have an equation in the form of a string:
Dim Answer as Integer
Dim AnswerBox as New RichTextBox
'... Settings for AnswerBox
[code].....
Inputting The Radiobuttons Into Equation
Jun 8, 2011My 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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Use Day & Month In Simple Equation?
Mar 26, 2012What 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.
View 2 RepliesUsing MS Equation Editor In VS2008?
Nov 17, 2009after 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.
View 2 RepliesVS 2010 - MouseMove Equation ?
Dec 19, 2010I 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
[code]...
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.
Concatenate A Equation And Answer To Text Box?
Mar 22, 2011In 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?
Display An Equation Prior To Solving It?
Jul 19, 2011I 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.
Displaying The Equation And Answers In A Listbox?
Apr 27, 2012First 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
[Code]....
Equation - How To Display Number 7 In Label
Feb 20, 2009I 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?
Evaluating An Algebraic Equation And Getting The Answer?
Jun 19, 2009I 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:
[Code]...
Get Program To Re-adjust The Boolean Equation On The Fly?
May 30, 2012I 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.
How To Find Equation Of Curve Given Data Set (X / Y)
Jan 30, 2011I am trying to write code in vb.net to find a equation when data points are given. For example (1,5),(2,6) etc. I need to find a equation(not necessarily always linear) from the given points. How do I calculate a trendline for a graph? How to get equation.
View 1 RepliesIncome Tax App - Adding Equation For Each Case
Jun 8, 2011I have to create an app that computes the amount income tax that a person has to pay, depending on salary. Income tax should be calculated for each portion of income in each range.
Here are the following income ranges and taxes rates:
Not over $7825=10%income tax
$7825-31852 = 15%income tax
$31851-77100 = 25%income tax
$77101-160850 =28%income tax
$160850-349700=33%income tax
Over $349700 =35%income tax
Here is the code so far:
Public Class IncomeTaxForm
Private Sub calculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calculateButton.Click
Dim IncomeTax As Double = 0
Dim salary As Double = 0
[Code] .....
I keep getting zeros. Do I have to add another equation for each case?
Odd Number Created With Equation In Dim Statement?
Dec 16, 2011I have some variable that when divided I get this symbol: -1.#IND when you look at the variable in debug. This only happens when I put the equation in the Dim statement.
[Code]...
I don't have a problem. Why when I put the equation up in the declaration area it sets it to -1.#IND (I assume this is infinite or NAN or some such). I'm curious as this is the only time I've had difficulty with this.
VS 2005 Applying Math Equation?
Jul 17, 2010i got the following equations and want to apply it in VB.net, how do I construct it in VB.net.
[code..]