string array.Contains?

Question

.NET 2

string[] myStrings = GetMyStrings();    
string test = \"testValue\";

How can I verify if myStrings contains test

Answer 1

Here's a .NET 2.0 compliant approach. Using Array.Find will return null if the value isn't found.

C# Approach

string[] myStrings = { "A", "B", "testValue" };
string test = "testValue";
string result = Array.Find(myStrings, delegate(string s) { return s == test; });
Console.WriteLine("Result: " + result);

If you need a case insensitive match use s.Equals(test, StringComparison.InvariantCultureIgnoreCase).

EDIT: with VB.NET 2.0 more effort is required since it doesn't support anonymous delegates. Instead you would need to add a Function and use AddressOf to point to it. You would need to set the testValue as a member or property since it will not be passed in to the predicate method. In the following example I use Array.Exists.

VB.NET Approach

' field or property ' 
Dim test As String = "testValue"

Sub Main
    Dim myStrings As String() = { "A", "B", "testValue" }       
    Dim result As Boolean = Array.Exists(myStrings, AddressOf ContainsValue)
    Console.WriteLine(result)
End Sub

' Predicate method '
Private Function ContainsValue(s As String) As Boolean
    Return s = test
End Function