Test If HttpContext.Current.Application("var") exists (vb.net)

Discussion in 'ASP .Net' started by gn, Feb 20, 2005.

  1. gn

    gn Guest

    I am a VB.Net newbie and have tried to search for this answer without
    success - What is the exact syntax to test if
    HttpContext.Current.Application("var") exists in vb.net

    I have tried:

    If (HttpContext.Current.Application("var").ToString) <> "" Then

    That gives me System.NullReferenceException: Object reference not set
    to an instance of an object Error, I suspect because I am trying to
    convert nothing into a string??

    If HttpContext.Current.Application("var") is null then

    Didn't like that either, syntax checker said I should use system.DBnull
    since 'null' is no longer supported??

    I am sure I am missing something very simple, could someone please give
    me a nudge in the right direction?

    gn, Feb 20, 2005
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  2. gn

    Guest Guest

    Guest, Feb 20, 2005
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  3. gn

    AZNewsh Guest


    I think I am in need of a rest, I knew that!

    Thank you for saving me from myself
    AZNewsh, Feb 21, 2005
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