How to replace text to textbox2 instead of replacing the actual text in textbox1?(VB.NET)

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I'm trying to demonstrate easy encryption in my project. In this part, i'm supposed to replace each character in textbox1 to special characters assigned. But in this code the actual text gets replaced, I don't want that to happen,instead I want that to be shown in textbox2 retaining actual text in textbox1. How can I do that?

Here is the code:

VB

Private arLetterChars() As Char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890 "
    Private arEncryptedChars() As Char = "¿ɸ¢ç¶‹!˜Ö´åÄÚᴁÍìæ¯~[Ûÿ|ÑûÏÉí³èô§ŠÀÙ:ÒÓ?>þ.äƒ%*š¾†±♠}@Ã¦Œ#/{۞],"
    '// encrypt.
    Private Sub Btnaddenc_Click(sender As System.Object, e As System.EventArgs) Handles BtnAddEnc.Click
        With Textbox1
            For Each myTextBoxChar As Char In Textbox1.Text '// loop thru TextBox, one char. at a time.
                For i As Integer = 0 To arLetterChars.Length - 1 '// loop thru all letters in the Array.
                    '// if TextBox char ='s the char in your Array, replace the TextBox char with the same #'ed Array char of the Encrypted letters.
                    If myTextBoxChar = arLetterChars(i) Then Textbox1.Text = Textbox1.Text.Replace(myTextBoxChar, arEncryptedChars(i))
                Next
            Next
        End With
    End Sub

Posted 22-Apr-14 0:44am

Rodney Mathew

Updated 22-Apr-14 1:04am

v2

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Comments

Mike Meinz 22-Apr-14 6:48am

Assign the value from Textbox1.Text into a local variable. Iterate through the local variable applying your algortithm. Then, assign the local variable to Tetbox2.Text.

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OriginalGriff · Accepted Answer · 2014-04-22T01:01:00

Solution 1

If you don't want to affect Textbox1, then don't assign to it...
Change

VB

If myTextBoxChar = arLetterChars(i) Then Textbox1.Text = Textbox1.Text.Replace(myTextBoxChar, arEncryptedChars(i))

To

VB

If myTextBoxChar = arLetterChars(i) Then Textbox2.Text = Textbox1.Text.Replace(myTextBoxChar, arEncryptedChars(i))

Posted 22-Apr-14 1:01am

OriginalGriff

Comments

Rodney Mathew 22-Apr-14 7:28am

I did what you said but not all characters got replaced... I tried to revert back to previous, and that works fine.
For eg: Mathew should be ?É*Àô† but it is mathe†

OriginalGriff 22-Apr-14 7:56am

What I said above was to guide you - not to be a complete solution to your problem! :laugh:

Personally, I wouldn't do it quite the way you are anyway: it's very inefficient!
If you thing about it, each string is an array of characters, and you can convert from a string to a character array and vice versa.
So, what I would do is convert the input string to a char array, and loop through that using a For loop.
Find the character in the "Letters" table, and replace it in the array with the character from the "Encrypted" table.
Then at the end convert the character array back to a string, and put it to the textBox2.Text

If you use the built in method Array.IndexOf, it will save you having to search the "Letters" table yourself, as well...

Does that make sense?

Rodney Mathew 22-Apr-14 8:32am

I tried it differently using your suggestion and now it's working! Thank you!

OriginalGriff 22-Apr-14 8:37am

You're welcome!