如何在C＃ASP.NET背后的代码中将背景图像设置为:: before选择器

Question

Currently I was trying to use c# code to set background image to div but it was unsuccessful when I try to put the background image into div and use the div id to set the style to :before .

Here is my code:

CSS code:

#theme1:before {

   width: 106px;
   content: " ";
   position: absolute;
   left: -16px;
   top: -6px;
   height: 100px;
}

ASPX code:

<div id="theme1" runat="server">
     <div id="theme2" runat="server">
         hello <br/>
     </div>
</div>

C# code:

protected void Page_Load(object sender, EventArgs e)
{
    theme1.Style["background-image"] = "Pic/img.jpg";
    theme2.Style["background-image"] = "Pic/img1.png";
}

Any help would be appreciated. Thanks!

Answer 1

Try using attributes.add instead of style eg.

theme1.attributes.add('style', 'background-image(image path)')

That should work