CODEWITHSUNDEEP
vb.net
user6327557
user6327557

Reputation:

Compare two strings with wildcard

I want to compare two strings. I want to be able to say that s1 is equal to s2 because of the common word "hello". any suggestions on how to achieve this with or without another function?

s1: hello
s2: hello world

if s1 = s2 then
       ..do something
else
       ..do something
end if

Upvotes: 1

Views: 6734

Answers (2)

p3tch
p3tch

Reputation: 1495

If you're just looking for whether or not both strings have "hello" somewhere in them

If s1.Contains("hello") AndAlso s2.Contains("hello") Then
    'do something
Else
    'do something else
End If

Upvotes: 2

Tim Schmelter
Tim Schmelter

Reputation: 460098

It sounds as if you want to compare substrings, you can use String.Contains:

Dim s1 = "hello"
Dim s2 = "hello world"

Dim s2ContainsHello As Boolean = s2.Contains(s1) ' True

or (if you want to ignore the case) String.IndexOf which returns -1 if it wasn't found:

s2 = "Hello World"
s2ContainsHello = s2.IndexOf(s1, StringComparison.InvariantCultureIgnoreCase) >= 0 ' Still True

a third option in VB.NET is to use the Like operator (which also is case-sensitive by default):

s2ContainsHello = s2 like "*" & s1 & "*"

The Like-operator supports wild-cards:

Characters in pattern    Matches in string
?                        Any single character
*                        Zero or more characters
#                        Any single digit (0–9)
[charlist]               Any single character in charlist
[!charlist]              Any single character not in charlist

Upvotes: 5

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