Project Eulers 16 In Visual Basic. Sum Of Digits In The Number 2^1000?
May 29, 2009
Project Euler's problem 16:2^(15) = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 2^(1000)?I have been trying to do this problem for a few days now and i just can't figure out how to get vb.net 2008 to recognize anywhere near that large a number. I have seen in other posts that some software like java has the integer type BigNumber or BigInteger but i cant find anything like that in visual basic. I'm running into this problem a lot using Visual Basic. I also can't seem to find any of the standard upper level math features in visual basic such as factorials and a few others that i can't remember but couldn't find under the math feature. any suggestions? (Sorry let me rephrase, any suggestions on how to do this stuff without switching to a different programming language.)
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Jan 13, 2012
I am very new to Visual Studio Application Development. I'm mostly a DB guy. I used Visual Studio as a Report Designer, not much of an .Net guy though I can understand it. I am now asked to create a .net application and I'm trying to create a "Hello World" starter app. I opened my Visual Studio, click File-New Project and all I see is Business Intelligence Projects and Other Project Types. My step-by-step guide says choose Visual Basic, Windows Forms Application. But I can't see it as an option.
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Dec 9, 2009
I am using: (copied from the/about vb studio window:
Microsoft Visual Studio 2005
Version 8.0.50727.762 (SP.050727-7600)
Microsoft .NET Framework
[code].....
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Jan 15, 2012
I want to use "OpenGL" in my project. Is it possible to associate it with "Visual Basic" application developed in Visual Studio 2010? If yes then how can we do it.
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Feb 1, 2010
Using Visual Basic in Visual Studio 2008. I have students zip the folder for a vb project and send it to me. Then I unzip and add it to a project of mine. It will not open any of their work as the path has changed. I can't even see the code. If they send me the code only then I have to recreate the forms. They also have problems saving it on a jump drive, then moving that jump drive to a different computer as the drive letter changes. I have looked for help and it states to go to icons that I can't find in studio 2008. Using the open existing project gives the same result as the path has changed. Is it impossible to give someone else an existing project? I have gone in the import/export options but have run out of guesses.
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Jun 19, 2010
telling that how can i run a project of visual basic 6.0 on network(LAN) databse will be on 1 system only...
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Jun 20, 2011
I am about to start up a new project using Visual Basic .Net Express 2008 and I was wondering if I should install and use Visual Basic .Net Express 2010 instead. I would like your opinion of 2010. My project isn't especially fancy. But an automatic adjustment for monitor size would be useful.
Does 2010 replace the existing VB Express? Do I have to convert my existing projects? I had problems with this going from 2005 to 2008.
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Apr 27, 2009
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Mar 24, 2012
I was a COBOL programmer agout 15 years ago and I am now just getting into Visual Basic. The owner of a local business has asked me to write a program to perform what I think is a simple task. In the past the business would process payroll checks and print them in-house. Now they are using direct deposit. Checks are no longer printed. The check stub though is printed. This stub is then carried to each of 10 locations across West Tennessee and distributed to the employees.
This is my task: capture the stubs to a file (PDF, XPS) and email it to each employee. This way the employee will recieve the stub on the same day the deposit is made. I can capture the output file (the stubs) and save it as a PDF file or a XPS file. I can send an email from within a program. What I don't know how to do is open the PDF or XPS file, read the email address and insert the page into the email body.
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Oct 20, 2009
some idea to how to run VB project using Java.
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Jul 25, 2011
I want other programmers to critique my applications so I know what neeeds to be improved, But that cant be done if I just show the source code. Is it possible to upload a whole Visual Basic project to a thread?
Brandon Jimenez
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Apr 14, 2009
I make a program-application in visual basic and it work OK. When I pack my application in setup project and make the installation, the database(in program) it did not save a new data or any update. Where is a mistake ?
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Aug 25, 2011
I converted one of my projects from Visual Basic 6.0 to Visual Basic.NET and noticed stuff such as:
Quote:
'UPGRADE_WARNING: Structure PROCESS_INFORMATION may require marshalling attributes to be passed as an argument in this Declare statement. Click for more: 'ms-help://MS.VSCC.v90/dv_commoner/local/redirect.htm?keyword="C429C3A5-5D47-4CD9-8F51-74A1616405DC"'
'UPGRADE_WARNING: Structure STARTUPINFO may require marshalling attributes to be passed as an argument in this Declare statement. Click for more: 'ms-help://MS.VSCC.v90/dv_commoner/local/redirect.htm?keyword="C429C3A5-5D47-4CD9-8F51-74A1616405DC"'
Clicking on the link it talking about Imports System.Runtime.InteropServices. Which, I am guessing means the project a mixture of both .NET and .COM. How would I rewrite to be totally .Net compatible instead of relying on .COM?Also where would I put code in VB.NET if it was in the Form_Initialize() sub in VB6.0?
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Sep 1, 2011
I am currently enrolled in the class. My final project for the class will generate random numbers within a range of numbers. For example, if I give the user five text windows to choose whether to input a number OR generate a random number, I will have a button called RANDOMIZE. Unfortunately, I do not know the line(s) of code for the random function.
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Aug 25, 2011
Just curious. I recently had an incident in which I was called to troubleshoot a VB Winforms app. I have 2 versions of a package (LeadTools) installed on my machine. These packages contain numerous dlls and it is not unusual for a dozen or more to be referenced in a single program.
[Code]...
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Jun 27, 2011
I have a vb 2008 code project i need to build the exe filehow could I do this please note that our clients do not have visual basic 2008 software..so how can I build the exe file of vb 2008 project and run it in other machines where visual basc 2008 is not installed
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Apr 7, 2010
I am hoping that somebody here is familiar with the book, "Doing Objects with Visual Basic 2005" so this question makes more sense but I will try and ask it in a way that makes knowledge of the book irrelevant.The book contains a sample project that I am trying to use as a "framework" for all my new projects. The project shows you how to read and edit objects to and from a database and that part works great. The author then leaves the new and deletes up to the reader to do, which is a good way to learn. However I am having trouble with the it. My problem is that I am having trouble implementing my own ProcessNew InterfaceI think this is how it should be:
Public Function ProcessNew() As Boolean Implements IMDIChild.ProcessNew
Dim myGoal As Goal = TryCast(GoalBindingSource.AddNew, Goal)
myGoal.Goal = rtxtGoals.Text
[code].....
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Apr 13, 2009
How do i open an VBS project in Visual Basic Express Edition?
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I need a function to calculate the number of weekdays between two dates in VB.NET. I don't need to worry about holidays. My attempts unfortunately have been futile.
This will go in custom code in Reporting Service 2008 R2.
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I Need a code to Identify Volume Serial Number and put in textbox1.text
The code should work for Visual Basic 2010
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found that Visual studio Basis not have a 'Package and Deployment' project type, andVisual studio professional Trial Edition is a temporary solution and also I remember that the license agreement says that Trail Editions
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Mar 15, 2011
I am trying to extract whichever number is next to a=. I hardwired a value of 1000 for testing purposes.I keep getting an error saying Index and length must refer to a location within the string.Parameter name: length when I try and use substring.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim text As String = TextBox1.Text
Dim comp(9) As String
[code]....
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For some reason, the Add New Item command on the Project Menu is hanging VB on my Vista based machine.but now, it hangs. By that I mean the the little circle cursor spins and spins and spins... This happens even when all I do is start VB, start and new project. and then try to add something, eg. another form, a class, anything except "existing item".
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Aug 25, 2011
I need a small app that randomly shuffles a set of preloaded numbers. The shuffling will be visible on the screen and goes on continuously (looping) until a key is pressed and as soon as that happens it will show the winning number.Am using visual basics 2008 to develop the application but my problem is when i start the app and hit a key it will loop through my numbers on the text file and it will also display the event but if i hit a key to stop it will not stop..I was workin on the app but my problem is how to stop the loop and resume on the with a keypress. below is the app codes.
Dim Running As Boolean = False
Sub ReadAccounts()
Dim arr As New ArrayList
arr.Add("1366-665885-666-22650")[code]....
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Apr 13, 2011
I have a listbox with 1091 items in it, which I am adding during design time. Every time Visual Studio tries to save after I manually populate the listbox it will hang indefinitely. Is there any way around this, am I trying to add too many items to a listbox?
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How do you extract source code from a VB.NET .EXE file?
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Jun 17, 2011
How do I know the original number of digits that appear in this way 5.555555E+36
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Jan 5, 2011
I need to round like this:
12 -> 10
152 -> 200
1538 -> 2000
25000 -> 30000
etc.
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Nov 17, 2009
Is there a number format in .Net that will display a given number of significant digits, but also NEVER displays in scientific notation (for example,declaring 3 sigfigs you would have 1234.567 = 1230 and .000123456 = .000123)
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