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Thread: Dynamic Alert/MessageBox

  1. #1

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    Super Moderator RobDog888's Avatar
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    Arrow Dynamic Alert/MessageBox

    Run this code from any code behind event to invoke a alert/msgbox without having to use Page.RegisterStartupScript() or using an objects .Attributes property to tie an js alert to it.

    This is independant from any object and just like having a VB6/VB.NET Messagebox.


    VB Code:
    1. Protected Sub SomeSub(ByVal sender As Object, ByVal e As System.EventArgs)
    2.     Response.Write("<script language=javascript>alert('This is a dynamic alert.');</script>") '
    3. End Sub
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  2. #2
    ASP.NET Moderator mendhak's Avatar
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    Re: Dynamic Alert/MessageBox

    Edit

    Dude, not a good idea.

    Response.Write is not a good thing to use on ASP.NET pages.

  3. #3

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    Re: Dynamic Alert/MessageBox

    Then how would you recomend invoking a alert without having to use a hidden control or something?

    Say if you wanted to evaluate a couple of aspx controls and depending on the scenerio, call a message?
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  4. #4
    Frenzied Member Fishcake's Avatar
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    Re: Dynamic Alert/MessageBox

    Quote Originally Posted by RobDog888
    Then how would you recomend invoking a alert without having to use a hidden control or something?

    Say if you wanted to evaluate a couple of aspx controls and depending on the scenerio, call a message?
    By using Page.RegisterStartupScript.

  5. #5

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    Re: Dynamic Alert/MessageBox

    Yes, I learned that one a while ago as it was a question froggy couldnt answer when I was just starting to learn asp.net.
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  6. #6
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    Re: Dynamic Alert/MessageBox

    Quote Originally Posted by mendhak
    Edit

    Dude, not a good idea.

    Response.Write is not a good thing to use on ASP.NET pages.
    then what else do u use to display anything on the page from the code-behind?

  7. #7

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    Re: Dynamic Alert/MessageBox

    Hes means to use other methods like - Me.Page.RegisterStartupScript(...

    or ...

    Me.Page.RegisterClientScriptBlock(...
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  8. #8
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    Re: Dynamic Alert/MessageBox

    ahh ok, so for registering javascripts...

    not exactly just trying to display Hello, World! on the page..

    Cool, thanks for clearing that up

  9. #9

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    Re: Dynamic Alert/MessageBox

    VB Code:
    1. Me.Page.RegisterStartupScript("script1", "<script language='JavaScript' type='text/javascript'>alert('Hello World');</script>")
    No need for js in the html.
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