[RESOLVED] Checking for last character in last appended string

[kareninstructor]

You could use String.Last

Dim Value As String = "123".AppendIfNeeded("}"c)
Console.WriteLine(Value)
Console.WriteLine(Value.AppendIfNeeded("}"c))

Place the following into a code module

<System.Runtime.CompilerServices.Extension()> _
Public Function AppendIfNeeded(ByVal sender As String, ByVal Character As Char) As String
    Return IIf(sender.Last = Character, sender, String.Concat(sender, Character)).ToString
End Function

Of course you could use the single line in the extension method in your code too.