Forcing an iframe in an ASP.NET web application to refresh and reload

Although I have experience in .NET Core development, ASP.NET Web Apps are new territory for me.

Within my Index.cshtml, there is an iframe with the following attributes:

    <iframe 
      height="800" 
      width="1300" 
      loading="eager" 
      frameBorder="0" 
      scrolling="no" 
      seamless="seamless" 
      allowtransparency="true" 
      src="https://example.com/?page_id=436" 
      title="My site" />

I am looking to ensure that this iframe reloads (not from cache) every time the page is refreshed. One suggestion I found online is as follows:

iframe.src = "https://example.com/?page_id=436?reload="+(new Date()).getTime();

My question is this: In an ASP.NET web app using bootstrap, where should I insert this code to trigger the iframe refresh? While I have some familiarity with javascript, my ASP.NET knowledge is limited, and my understanding of bootstrap is even more so. I am proficient in html/css, however.

I am unsure of where to place this javascript snippet in the code to ensure it executes every time the page is refreshed. Additionally, I am unsure of how to reference this code to my specific iframe.

Any guidance would be greatly appreciated!

javascriptc#asp.net-mvciframebootstrap-4

Answer №1

If you're looking to refresh your iframe with a simple code snippet, this is the way to do it. To ensure that the refresh occurs when the page is reloaded, it's important to run this code after the page has finished loading — using a defer script:

<script defer>
  iframe.src = "https://example.com/?page_id=436?reload="+(new Date()).getTime();
</script>

Answer №2

After confirming that the suggested javascript code did not work as expected, I decided to switch to using C# code in my Index.cshtml file:

@page
@model IndexModel
@{
    ViewData["Title"] = "Example";
    string pageUrl = "https://example.com/?page_id=436?reload=" + DateTime.Now.ToString();
}

<div id="site-main">
    <div>
        <h1 class="headline">Printing some good stuff here</h1>
        <p class="headline">And now some description!</p>
    </div>
</div>
<div>
    <iframe id="cgblog" height="800" width="1300" loading="eager" frameBorder="0" scrolling="no" seamless="seamless" allowtransparency="true" src="@pageUrl" title="My site">
    </iframe>

</div>

By defining the variable pageUrl and using it as the src for the iframe, I was able to solve the issue!

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