Question

How do you show an alert from a separate code moduel in asp.net, not the codebehind of a page, thats an easy one.

This is one way to do it from the code behind of a page.

ScriptManager.RegisterStartupScript(Page, Me.GetType, "alert('Hello')", True)

How can i achieve this from a separate code module though, i am not sure. it needs a control and control type for the first to parameteres respectively. So the code above will error out on the first 2 params. Does anyone have a solution?

Answer 1

You need to pass the Page object of the current request to this extern module. Then you can use it in the RegisterStartupScript function. For example:

Some extern class:

Public Class MyClass
    Public Shared Sub DoSomething(Page As Page)
        ' do something
        ScriptManager.RegisterStartupScript(Page, Page.GetType, "alert('Hello');", True)
    End Sub
End Class

In theaspx page or CodeBehind:

' ...
MyClass.DoSomething(Page)
' ...