Question

I need to keep the first 5 words from returned string, stripping of the balance.

eg. I want to keep “Stackoverflow is an amazing resources” from the word below

Stackoverflow is an amazing resources for developers

Answer 1

You could use Substring in combination with IndexOf.

Dim amazing = "Stackoverflow is amazing"
Dim notAmazing = amazing.Substring(0,  amazing.IndexOf(" is amazing"))

Or you could use Remove:

Dim notAmazing = amazing.Remove(amazing.IndexOf(" is amazing"))

Or (as answered by paulius_i) Replace:

Dim notAmazing = amazing.Replace(" is amazing", String.Empty)

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Edit: You’ve modified your question essentially, so here is a way to get the first n words of a string:

Dim amazing = "Stackoverflow is an amazing resources for developers"
Dim words = amazing.Split({" "c}, StringSplitOptions.RemoveEmptyEntries)
Dim first5Words = String.Join(" ", words.Take(5))

• Enumerable.Take
• String.Split