Converting A String Of Letters To A String Of Numbers?

Apr 10, 2009

I'm having a problem converting a string of letters to a string of numbers. I've tried:

Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0

[Code].....

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Converting Text Containing Alpha-numeric & Special Characters To String Of Only Capital Letters And Numbers

Nov 19, 2011

I have encrypted a string to something like this:

1. Asak2$)kla1015QAXKFskfa332aSJ2(Ska@Skljcmcel3p.lq,aowpqaskla2@)Skx.:Pdm^),dfs;

what i want to is convert this string to something like this

2. JXK2LB AP2WXB S1P0XE ZXPA3H X1LAKW DOXPS3

both 1 & 2 the above strings are fictitious (i made them up to make my point clear)

I am trying to make a licensing system for my VB 2010 express application. (2) above will act as a serial key which can be derived from (1) which is an encrypted form of something unique of the client computer.

I will then confirm the (2) from the client.

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I thought this was unusual as it should be generating a random character not a repeating one, so I stepped through in debug and the characters generated were random (161g2-06T5ip-0957H9k). I thought perhaps that I needed to seed the value with Now().Milliseconds, no luck, that still resulted in repeating characters. So I tried sleeping the thread and that generated the random values I wanted.

[Code]...

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<Extension()> _
Public Function ToNullableShort(ByVal str As String) As Short?
Dim intReturn As Short

[Code].....

I was trying to make a generic function out of this, but couldn't do it. How can I make a generic function that will take a specific T and make it a Nullable(of T)?

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QuotationIDtextbox.Text = CarRegistationTextbox.Text.ToUpper & QuoationsCustIDTextBox.Text

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This seems a simple enough thing to to but its giving me problems. What I have is this; a text box the user enters a word into, then a btnReverse that when clicked should cause the inputted word to display in reverse in lblReverse.Text. What seemed to me to be the easiest solution was this;

Option Explicit On
Option Strict On
Option Infer Off
Public Class frmMain

[code]....

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how to take a name entered in a text box and convert only the first letter of each name to upper and then convert the rest to lower.

Ex: "john doe" --> "John Doe"
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I have a string of randomly organized characters and I am trying to search a wordlist for matches. If the wordlist has a match I want it to add it to a listview. I wasn't for sure how to word the first two sentences and I think an example will help explainmy problem better. So here is an example. I have a textbox where you input what you want to search for in the wordlist. Lets say you type in tca . The wordlist contains cat frog dog , each word on a separate line. What i want to do is take what you typed in the textbox, tca , and find the word cat in the wordlist.

[code]...

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So I basically want to make sure that a string entered by the user is valid. Valid being over 10 characters, containing only upper case characters, and only characters A - Z and spaces. The first two were easy, but I'm having trouble with the third, though.What I originally attempted to do was create a loop which checks if the first invalid character is present with the InStr function, by using the characters ASCII value. The next ASCII value is then checked, and so on until it has checked the string for every single invalid character. If an invalid character gets picked up, 1 is added to a variable, and after the loop is finished executing, if the variable is no longer 0, invalid characters have been detected.

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[Code]...

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Nov 4, 2009

QuoteWrite a Visual Basic Console Application which executes a Do-While loop repetitively. Each time the Do-While loop executes input a String value, count and display the number of occurrences of the letters �a�, �b�, �c�, �d� and �e�. Use at least one Select Case statement inside your Do-While loop. For example, suppose during one execution of the Do-While loop you input the following String value: �My mother is a great lady!�. Your program should input this value into a String variable, compute the number of times each of the letters �a�, �b�, �c�, �d� and �e� occurs and output the results: a � 3, b � 0, c � 0, d � 1, and e � 2. Terminate your Do-While loop once a value of �All Done!� is entered for the String value.

Here is my code:

Dim s1 As String
Dim a, b, c, d, e, count As Integer
Do While (s1 <> "all done")

[Code].....

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Nov 5, 2009

My problem is an error that states Variable 'count' hides a variable in an enclosing block. Here is my project and my code so far:

1. Write a Visual Basic Console Application which executes a Do-While loop repetitively. Each time the Do-While loop executes input a String value, count and display the number of occurrences of the letters �a�, �b�, �c�, �d� and �e�. Use at least one Select Case statement inside your Do-While loop. For example, suppose during one execution of the Do-While loop you input the following String value: �My mother is a great lady!�. Your program should input this value into a String variable, compute the number of times each of the letters �a�, �b�, �c�, �d� and �e� occurs and output the results: a � 3, b � 0, c � 0, d � 1, and e � 2. Terminate your Do-While loop once a value of �All Done!� is entered for the String value.

2. In the same Visual Basic Console Application, following the Do-While loop described in step 1. above, enter another String value and modify it by replacing all occurrences of the word �hi� with �hello�; all occurrences of the word �today� with the word �tomorrow�; all occurrences of �hate� with �love�. Output both the original String value and the modified String value.

This is my code:

Module Module1
Sub Main()
Dim s1 As String
Dim a As Integer = 0
Dim b As Integer = 0

[code].....

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My String is filled with one- or two digit numbers, letters and characters, e.g.[code]...

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Dim rdr As SqlDataReader = sqlcmd.ExecuteReader
If rdr.HasRows Then
rdr.Read()

[Code].....

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[code...]

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[Code]...

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[code].....

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Private
Sub
Button1_Click(ByVal
sender As

[code]....

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IAL As Double
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[Code].....

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