Web.Config  Use "pointy brackets Vs square "[" & "]"

[?xml version="1.0" encoding="utf-8" ?]
[configuration]
	[appSettings]  
		[add key="Test" value="Hello World"/]
		...
	[/appSettings]  
	...
[/configuration]



Imports config = System.Configuration.ConfigurationSettings
...

    Private Sub btnLoad_Click(...) Handles btnLoad.Click
        Label1.Text = config.AppSettings("Test")
    End Sub