CODEWITHSUNDEEP
javascriptasp.net
Mark
Mark

Reputation: 981

Determining support for SVG in ASP.NET

I'm trying to devise a way to display an SVG image when rendering is supported and a png in the fallback case. I would like to do this on the server side for performance reasons because both are image formats are generated dynamically.

Is there a way to use the Page.Request.Browser to determine if SVG is supported?

Upvotes: 0

Views: 173

Answers (3)

Mark
Mark

Reputation: 981

I ended up hardcoding the browser version after finding this table. The versioning support is pretty straightforward so I just made a case statement. Based on the table everything else should support SVG (at least partially). I don't need to support "Android Browser" so I left it out.

System.Web.HttpBrowserCapabilities browser;

switch (browser.Browser)
{
  case "Firefox":
  case "Mozilla":
  {
    return browser.MajorVersion >= 3;
  }
  case "IE":
  case "IEMobile":
  {
    return browser.MajorVersion >= 9;
  }
  default:
  {
     return true;
  }
}

Upvotes: 1

cellik
cellik

Reputation: 2136

You could code separate partial pages one with the PNG image and one with SVG. And in the client you could detect the support and make a get request to one of the partial pages and place it in the DOM.

Upvotes: 0

alexb
alexb

Reputation: 971

Maybe not exactly what you were looking for but I remember that Modernizr.js has support for that

bool Modernizr.svg

Your could point to an action with this bool in the query string.

Upvotes: 0

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