How to remove string by format in VB .NET?

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I have a string whose part is always changing, and I want to remove that part from the string like this:

Our society, 01:12:15:14 the whole country
Our society, the whole country

This format should be removed from the string: 01:12:15:14
This format is always changing and cannot be deleted with the replace command like this:

joins our 02:00:47:13 struggle.
We 02:01:29:03 begin our gathering

How can I do this?

What I have tried:

I have no idea how to do this.

Posted 13-Mar-23 20:47pm

Member 12617947

Updated 13-Mar-23 21:32pm

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2 solutions

Solution 1

one way of doing it:

VB

Dim message = "Our society, 01:12:15:14 the whole country"
Dim result(message.Length) As Char
Dim position As Integer = 0

For i As Integer = 0 To message.Length - 1

    If "1234567890:".Contains(message(i)) Then
        Continue For
    End If

    result(position) = message(i)
    position += 1

Next

Dim newMessage = New String(result).Trim(vbNullChar)
Console.WriteLine(newMessage)

Posted 13-Mar-23 21:02pm

Graeme_Grant

Comments

CPallini 14-Mar-23 9:10am

5.

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OriginalGriff · Accepted Answer · 2023-03-13T21:32:00

Use a Regex:

VB.NET

Imports System.Text.RegularExpressions

'  Regular expression built for Visual Basic on: Tue, Mar 14, 2023, 07:29:32 AM
'  Using Expresso Version: 3.0.4750, http://www.ultrapico.com
'  
'  A description of the regular expression:
'  
'  \s\d+:\d+:\d+:\d+\s
'      Whitespace
'      Any digit, one or more repetitions
'      :
'      Any digit, one or more repetitions
'      :
'      Any digit, one or more repetitions
'      :
'      Any digit, one or more repetitions
'      Whitespace
'  
'

Public Dim regex As Regex = New Regex( _
      "\s\d+:\d+:\d+:\d+\s", _
    RegexOptions.IgnoreCase _
    Or RegexOptions.Multiline _
    Or RegexOptions.CultureInvariant _
    Or RegexOptions.IgnorePatternWhitespace _
    Or RegexOptions.Compiled _
    )
public Dim regexReplace As String = " "
...
    Dim result As String = regex.Replace(InputText,regexReplace)

If you are going to use regular expressions, you need a helper tool. Get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.