trigger jquery popup from server-side code (ASP.Net VB)

Within my code, I have created a div element which serves as a popup message:

<div class="info message">
         <h3>Informa&ccedil;&atilde;o</h3>
         <p>Mensagem informativa.</p>
</div>

In addition, there is a button that successfully triggers the display of this div (popup):

 <ul id="trigger-list">
         <li><a href="#" class="trigger info-trigger">Info</a></li>
  </ul>

However, I am interested in calling the div (popup) directly from the code behind, rather than using the button. Here is an example snippet of how I envision implementing this:

Sub Info(sender As Object, e As System.Web.UI.ImageClickEventArgs)
        If ChkInfo.Checked Then

'Code to show the div (popup)

Else

'Another code

End Inf

End Sub

It is important to note that I am following the guidance provided at

I appreciate any insights or suggestions. Thank you.

jqueryasp.netcss

Answer №1

If you need to initiate the opening of a popup from your code-behind file, you can't do so directly. However, you have the option to generate code that will trigger it for you by using 

ClientScriptManager.RegisterStartupScript
. By accessing Me.ClientScript, you can obtain a ClientScriptManager object to accomplish this. Here is an example:

    Me.ClientScript.RegisterStartupScript(GetType(Page), _
        "Popup", "showMessage('info');", true)

This code snippet will produce the following output on the webpage:

    <script type="text/javascript">
        showMessage('info');
    </script>

For more detailed information, refer to the MSDN documentation at http://msdn.microsoft.com/en-us/library/system.web.ui.clientscriptmanager.registerstartupscript.aspx.

Answer №2

If you're looking for a way to display a message or popup, here's a method you can try. Start by adding the attribute runat="server" to the div element and give it an ID. Set its initial visibility to false so that its HTML won't be generated until needed. When a button is clicked to show the popup, since the HTML hasn't been rendered yet, nothing will happen.

On the server side click event, you can set the visibility to true. Make sure to place the code to display the popup inside the document.ready() function to ensure everything renders correctly.

Feel free to ask if you have any questions!

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