Introduction:
This tutorial is on how to create a unicode to HTML equivilient characters.

Design:
This design requires two components;
Textbox, textbox1, User entries
Button, button1, Begins process.

Variables:
The way this system will work is it will search one array or list of information for the entry from the user, get the inex and return the element at the same index but in a different list, the information's equivilient partner. So first we need the two lists, we'll call the user entries list 'entries', and the equivilients list 'eqs'...

1. Dim
   
   entries As
   
   String
   
   () = {""
   
   ""
   
   , "quote"
   
   , "£"
   
   , "pound"
   
   }
   
2. Dim
   
   eqs As
   
   String
   
   () = {"""
   
   , """
   
   , "£"
   
   , "£"
   
   }
   

I have only included a few unicode & HTML characters, you can add an entire range by performing a simple Google search.

Button Click:
Now, on the button mouse click, we want to retrieve the entered text by the user and store it in a new variable named 'user'...

1. Dim
   
   user As
   
   String
   
   = TextBox1.Text
   

We then want to find the index in the 'entries' list that matches the users entry, all converted to lower case so there are no minimal discrepancies...

1. Dim
   
   ind As
   
   Integer
   
   = Nothing
   
2. For
   
   i As
   
   Integer
   
   = 0 To
   
   entries.Count - 1
   
3. If
   
   (user.ToLower() = entries(i).ToLower()) Then
   
   ind = i
   
4. Next
   

Next we want to use the stored index in the integer variable 'ind' to msgbox out the element at that integer position/index of the 'eqs' list...

1. If
   
   (ind = Nothing
   
   ) Then
   
2. MsgBox("That unicode character(s) was not found!"
   
   )
   
3. Else
   
4. MsgBox(eqs(ind))
   
5. End
   
   If
   

Finished!
Here's the full source code:

1. Public
   
   Class Form1
   
2. 
   
3. Dim
   
   entries As
   
   String
   
   () = {""
   
   ""
   
   , "quote"
   
   , "£"
   
   , "pound"
   
   }
   
4. Dim
   
   eqs As
   
   String
   
   () = {"""
   
   , """
   
   , "£"
   
   , "£"
   
   }
   
5. 
   
6. Private
   
   Sub
   
   Button1_Click(sender As
   
   Object
   
   , e As
   
   EventArgs) Handles Button1.Click
   
7. Dim
   
   user As
   
   String
   
   = TextBox1.Text
   
8. Dim
   
   ind As
   
   Integer
   
   = Nothing
   
9. For
   
   i As
   
   Integer
   
   = 0 To
   
   entries.Count - 1
   
10. If
    
    (user.ToLower() = entries(i).ToLower()) Then
    
    ind = i
    
11. Next
    
12. If
    
    (ind = Nothing
    
    ) Then
    
13. MsgBox("That unicode character(s) was not found!"
    
    )
    
14. Else
    
15. MsgBox(eqs(ind))
    
16. End
    
    If
    
17. End
    
    Sub
    
18. End
    
    Class