How do I update an iframe using ASP.NET core 2.0

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I have an iframe where I want to dynamically update the SRC value. I was able to do it with .net framework using the runat=server option. I see runat is not available with .net core 2.0

What I have tried:

I have tried to save the data in a hidden field (successfully) but am unable to change the value of the SRC field

Posted 18-Dec-17 19:36pm

Mike Margolius

Updated 31-Dec-17 3:35am

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Richard Deeming · Answer 1 · 2017-12-19T05:48:00

Changing the URL from the client:

HTML

<iframe id="theElement" src="about:blank"></iframe>

<script>
function changeUrl(){
    var iframe = document.getElementById("theElement");
    iframe.src = "https://...";
}
</script>

Changing the URL from the server:

<iframe src="@Model.DocumentUrl"></iframe>

Mike Margolius · Answer 2 · 2017-12-31T03:35:00

I have solved the issue, thanks for the insights. I added the iframe in the cshtml text and referenced the iframe src. Below is an example

<svg xmlns="http://www.w3.org/2000/svg" width="500" height="150" viewBox="0 0 500 150">
<rect id="r" width="500" height="150" fill="#fff" />
<line x1="0" y1="130" x2="500" y2="130" stroke="#666" stroke-width="1" stroke-dasharray="3" shape-rendering="crispEdges" pointer-events="none" />
<path id="p" d="@Html.DisplayFor(model => model.imageto_be_displayed")" stroke="navy" stroke-width="2" fill="none" pointer-events="none" />

I populate the image directly from the database, using EntityFramework.

How do I update an iframe using ASP.NET core 2.0

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