Create A Hash Calculator Using Vb2008?

Nov 30, 2010

i had to create a hash calculator using vb2008?

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Control Array Calculator Convert To Vb2008?

Jul 22, 2010

Super newbie here and I recently signed up just to address my problem. Please help me convert or at least tell me what to do on the following code to my vb2008.I saw this listing on a website and I like its simplicity. It was written in vb6.

here's the snippet:Design the form. Create a Command Button named as Command1 and copy that and paste it 11 times. This will create a control array.Then assign the text naming it 0-9 plus (.)dot and they are under one control array. Likewise create cmdOperator control array for the operators Add, Subtract, Multiply and Divide. One button for equals and one for clear. All in all 17 buttons. 1 textbox serves as input and output.

Sorry if I'm in a rush here( I am already) but vb2008 its hard for me to learn control array. I have read a few post awhile here dealing with arrays in vb2008 but I'm overwhelmed with info and confusing for me to grasp the idea.

[Code]...

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[Code]...

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My trouble isn't so much designing the form but in how I access the database.  Theres XML, LINQ to SQL, ADO.NET, and many other methods.  Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create.  What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from.  This is getting deep.  I know it depends on the project that I'm working on.  My plans are to write  an app based off of either an SQL Express 2008 or SQL Server 2008 database.  This first app will be standalone for now but may later become multi-user.  I know I'm far behind on my learning curve coming from VB6.  I have read a bit on VB2005 / 2008 / 2010.  I own
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Dim Answer As Integer
Dim BMIAnswer As Integer
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and if i press the button it will calculate and the answer the label will show the answer (55).

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I need to create a mortgage calculator, using the following formula: monthly payment = interest rate * loan amount * ( (1+ interest rate) ^ months) / ((1+interest rate)^months)-1) )

We have to use that formula, no other one. If anyone can spot an error in my code, please let me know what I've done wrong!

The code I've written is as follows:

CODE:

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Why does the numeric keyboard input work in this instance

Public Class Form1
Sub Form1_KeyPress(ByVal sender As Object, _
ByVal e As KeyPressEventArgs) Handles Me.KeyPress

[Code].....

Even if I press a keyboard number before pressing the button(so there is no need to clear the label if the button is pressed first etc), the number is not displayed in the label. And even if I completely comment out the code for the button-click, the keypress event still does not display the number in the label. It is as if just having the code for the button completely disables the keypress.

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[Code]....

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Public Class Form1
Dim total1, total2 As Double
Dim [Operator] As String
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[CODE]...

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Nov 16, 2010

I just switched to VS 2010 for Windows phone 7 developement... I am trying to create a basic BMI calculator app...This is what I have now...

CODE:

However I have these errors which are as below

Quote:

CODE:

Quote:

CODE:

Did I forget to declare something? This does not happens when I am using the divide and multiply in VS 2008.

Error Screenshot as attached below...

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i am trying to create a kind of calculator for fuel usage with menus lemme show ya the code:

Public Class frmFuelCalc
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[code]....

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[Code]...

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Here is the spec:

The client is prompted for their name and a personal reference number. If the application is successful then this number becomes the loan agreement reference number. If the applicant has a credit rating of 14 or more points the application is rejected. If the credit rating is less than 14 points then the client is prompted for the loan period (must be equal to 12, 24 or 36 months) and the amount required.

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[VB2008] Create & Initialize Data Structures So That They Are Seen By All Forms?

Mar 11, 2010

what the results I need in a Windows Form Application.

Requirement:
(1)  I need to create class objects with all various methods and properties, etc.

(2)  I will create only one instance of the each class

(3)  I need to be able to call the methods and properties of the created class objects (1) from any form I create.

(4)  I use the class objects to store data so that separate threads can access them..

Question: how I would code this into a WFA?  (I have console application code that works but need to convert it into a GUI).

[Code]....

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[Code]...

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Nov 16, 2011

I am at a bit of a loss at the moment. What I am basically writing is the password elements of a membership system. What I do is generate a random salt value, take the registered password, combine the two and then pass the new string through a function which will generate a SHAManaged 512 hash.

I then convert the hash and salt string into Byte arrays and store these in my database.The problem comes when I then compare a login attempt against the original value I am being supplied with a completely different hash for the password being presented by the user, even though it should be exactly the same.

Here is my code when someone registers their new account:

[Code]...

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[Code]...

The garbage collector in .NET moves objects, so the object's address is not stable. How is Object's GetHashCode() method implemented?

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PS: This is in Visual basic 2010 Express.

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Form 1 - Login
Try
DB_Connect = New MySqlConnection()

[code].....

i really need this working, all works but nothing is encrypted

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[code]...

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ArrayList list1 = new ArrayList()
list1.Add("String1");
list1.Add("String2");

[Code].....

I can first sort the list, then combine the sorted list into 1 long string and then call GetHashCode(). However sorting is a slow operation. I can get the hash of each individual string (by calling string.GetHashCode()) in the list, then multiplying all hashes and calling Mod UInt32.MaxValue. For Example: "String1".GetHashCode() * "String2".GetHashCode * ... MOD UInt32.MaxValue. But this results in a number overflow.

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Code:
Public Function GenerateHash(ByVal SourceText As String) As String
'Create an encoding object to ensure the encoding standard for the source text
Dim Ue As New UnicodeEncoding()

[Code].....

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Dim sHash As String =

[Code].....

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Dim frm As New MarksEntryFrm
Dim flag As Boolean
flag = False

[Code]....

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// First function (returns GUID)
Dim oHasher As Cryptography.MD5 = Cryptography.MD5.Create()
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Dim csData() As Byte

[Code]...

but they both produce the same result. Is it possible to produce the same results in php with md5 hashing?

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