How to remove special characters and junks

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VB

Public Function RemoveJunk(ByVal Readlinevalue As String) As String

Readlinevalue = Readlinevalue.Replace(vbLf, String.Empty)

Regex.Replace(Readlinevalue, "[^A-Za-z0-9\-/]", String.Empty)

Return Readlinevalue

    End Function

What I have tried:

well i tried my best but junk exist and invisible can you improve this code
some thing like ascii or can do better job ?

Posted 8-Jul-16 4:34am

Member 10974007

Updated 8-Jul-16 4:40am

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OriginalGriff · Answer 1 · 2016-07-08T04:40:00

Solution 1

Um. You do realise that Regex.Replace doesn't change the original input, but returns a value instead?
Regex.Replace Method (String, String, String) (System.Text.RegularExpressions)[^]
So try:

C#

Public Function RemoveJunk(ByVal Readlinevalue As String) As String
    Readlinevalue = Regex.Replace(Readlinevalue, "[^A-Za-z0-9\-/]", String.Empty)
    Return Readlinevalue
End Function

Posted 8-Jul-16 4:40am

OriginalGriff

Comments

Member 10974007 9-Jul-16 0:23am

see i don't note that for a long time i was using that code .
can any more improvement made to same

OriginalGriff 9-Jul-16 2:18am

You mean performance wise?
Probably - Regex isn't particularly efficient, but you'd probably need to do some performance tests to check the efficiency of the various possibilities.
There is a tip I wrote on a similar subject a few years ago:
http://www.codeproject.com/Tips/312312/Counting-Lines-in-a-String
Which does performance calculations for the various ways of checking newlines - which is a similar problem in many ways - and it gave some surprising results.
It's in C#, not VB, but it's pretty easy to understand (and has an "executive summary" which doesn't need code familiarity) and may be worth a read. (and you can translate between the two languages with
http://converter.telerik.com/
anyway).
Ultimately, you'll need to write a few different pieces of code and use Stopwatch to compare them to know for sure.

How to remove special characters and junks

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How to remove special characters and junks

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