How do I execute a custom code function only once on a reporting services report?

Question

I need to execute a custom code function when the report first loads, and I need it to only run once. Where do I put it?

Answer 1

I'm not sure how the best way to do this is. I don't think you get any events to hook in to, but you could fudge it. For example, have the header call a function to set the title, and as a by-product call your custom code function once:

Public Dim ReportTitle As String = ""

Public Function GetTitleAndDoSomethingElse As String
    If (ReportTitle = "") Then
        ReportTitle = "My Report Title"
        ' Do your stuff that runs once here
    End If
    Return ReportTitle
End Function

Then in your report header have a text box that is set to:

=Code.GetTitleAndDoSomethingElse

Ugly, but should do the trick.