Replace(var1, var2, " ") won't work VB.NET

Question

1.00/5 (1 vote)

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I want when the checkbox is unchecked to delete text off a variable

VB

Imports System
Imports System.IO
Imports System.Text
Imports System.Environment

Public Class Form1

    Dim slowchecked As Boolean = False
    Dim filepath As String
    Dim code1 As String = ""
    Dim slowdown As String

    Private Sub CheckBox1_CheckedChanged(sender As Object, e As EventArgs) Handles CheckBox1.CheckedChanged
        If slowchecked = False Then
            slowdown = ("start" & NewLine & "start" & NewLine & "start" & NewLine & "start" _
                & NewLine & "start" & NewLine & "start" & NewLine & "start crash" & NewLine)
            code1 = (code1 & slowdown)
            slowchecked = True
        ElseIf slowchecked = True Then
            Replace(code1, slowdown, "")
            MsgBox(code1)
            slowchecked = False
        End If
    End Sub
End Class

but it doesn't delete or come out with an error

What I have tried:

Tried swapping "Replace(code1, slowdown, "")" with "code1.Replace(slowdown, "")" but I don't know what else to try.

Posted 15-Sep-18 23:20pm

Member 13985992

Updated 15-Sep-18 23:55pm

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OriginalGriff · Answer 1 · 2018-09-15T23:56:00

Solution 1

Yes it does. But not the way you are assuming it would.
Replace doesn't change strings, it returns a new string with the replacements done: Replace Function (VB6) - VB & VBA in a Nutshell: The Language [Book][^]
So you need to assign the result to a variable, or it is just discarded.

By the way: if you are going to use VB.NET, then you should stop using VB6 functions such as Replace and MsgBox, and use the .NET versions instead: String.Replace Method (System) | Microsoft Docs[^] and MessageBox.Show Method (System.Windows) | Microsoft Docs[^]

Posted 15-Sep-18 23:56pm

OriginalGriff

Comments

Member 13985992 21-Sep-18 9:18am

I don't get it, what do you mean by assign result? Give me an example.

OriginalGriff 21-Sep-18 9:59am

What do you think? How would you normally assign a value to a variable?

Member 13985992 21-Sep-18 10:25am

I don't know! I'm a begginner

OriginalGriff 21-Sep-18 10:45am

So you've never even seen this:

noOfItems = 6

I find that difficult to believe...

Member 13985992 21-Sep-18 10:47am

still don't get it soz
why do i need it

OriginalGriff 21-Sep-18 10:59am

noOfItems = 6
    ^     ^ ^
    |     | |
    |     |  -- Value
    |      ---- Assignment operator
     ---------- Variable

Which part of this is giving you problems?

Member 13985992 21-Sep-18 11:01am

why do i need it?

OriginalGriff 21-Sep-18 11:08am

Follow the link and read what is says ... you are going to have to start thinking here - this is not a field where you can glide through without engaging your brain, you know.

Member 13985992 21-Sep-18 11:21am

i looked back at the comments and i misread your answer, i did assign a value to the var, just to make sure, what variable are you talking about?

OriginalGriff 21-Sep-18 11:26am

:sigh:

What is the title of your question?
HINT. HINT.

Member 13985992 21-Sep-18 12:05pm

DOESN'T WORK! That's the title of the question.

OriginalGriff 21-Sep-18 12:11pm

Oh FFS.

1) Engage brain.
2) Follow link in original solution.
3) Read. I know you can do that on your own ...
4) Find the bit where it says "Return Value" and pay loads of attention to what it says below that.
5) Possibly, think a bit.
6) Add a variable and an assignment operator to your code...
7) Profit ...:laugh: