Question

I’m working in Visual Basic .NET, and I’m trying to get split to work.

Here is my code:

Public Sub CheckUpdate(ByVal FileURL As String)
        Dim instance As WebClient = New WebClient
        Dim ApplyTo As String = instance.DownloadString(FileURL)

        asd = ApplyTo.Split(",")
    End Sub

I use it like this:

 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        NewUpdate.CheckUpdate("version.txt")
        Label1.Text = NewUpdate.asd(0)
    End Sub

(Yeah, I know I use it on a local .txt file for now!)

So with asd(0) it reads the whole file. If I check asd(1) I get IndexOutOfRange. So how does Split() work?

Answer 1

String.Split returns an array with all the parts of the string separated by the specified character (in your case it’s a comma). If asd(1) is out of range, that means you don’t have any comma in your string.

Consider the following code:

Dim ApplyTo As String = "Test1,Test2"
asd = ApplyTo.Split(",")
Console.WriteLine(asd(0)) 'Prints "Test1"
Console.WriteLine(asd(1)) 'Prints "Test2"