Search string and grab all contents between 2 key words VB .NET - regex

Question

I've seen a bunch of examples on this online but I can't seem to find the one I'm looking for which uses Regex. I've seen many that use a loop and use a lot of lines of code but I'd like to see an example of Regex.
What I'm trying to create is an app that will connect too a webpage take the source search for a keyword once its found copy the text from that keyword to another keyword and save it into a string or to a textbox whatever.
I'm already using web request to get the information and put it into a string I just need to search the string for what I am looking for.
The reason for this app is to search webpage for an updated version of some software I'm using. I want to monitor for updates and the app to notify me when an update is available. Just a simple app but having issues searching for what I need.
For Example:
first words to search for: Server 64-bit
second words/characters to search for: </div>
grab first words everything in between and last word saved into a string.
EDIT: The information I am trying to grab is this....
Server 64-bit
<span class="version">
3.0.13.6
</span>
</h3>
<div class="checksum">SHA256: c7eeb1937b0bce0b99e7c7e20de030a4b71adcaf09750481801cfa361433522f</div>

Answer 1

you can use the following code with RegEx to return the whole sentence including the two keywords you are providing
Dim str As String = "first words to search for: Server 64-bit second words/characters to search for: </div>"
str = str.Replace(vbNewLine,"|")
Dim strA As String = Regex.Match(str, "Server 64-bit(.*?)</div>", RegexOptions.Singleline).Value
Msgbox(strA)
Or you can use the following expression to get only value between this two keywords:
Dim strA As String = Regex.Match(str, "(?<=Server 64-bit)(.*)(?=</div>)", RegexOptions.Singleline).Value

Answer 2

Maybe not the prettiest solution, but i would save it into a string. Then iterate through it with the string.contain("Server 64-Bit") and then split the whole thing and then split the remaining part of the string at the next and retrieve only the first part.
Dim Information As String
Dim Splitstring As String
If Information.Contains("Server 64-Bit") Then
Dim parts As String() = Information.Split("Server 64-Bit")
For Each part In parts
SplitString As String = part(1)
Next
If SplitString.Contains("</div>") then
Dim parts As String() = Information.Split("</div>")
For Each part In parts
Dim ResultString As String = part(0)
'Displaying Result in a MsgBox
MsgBox(ResultString)
Next
End If
End If
Im currently only at my Phone, so I cant actually test this, but this should work.