Converting System.Web.UI.WebControls.Image to System.Drawing.Image?

问题

I can't seem to convert it. Any help?

回答1:

They are two completely different objects:

• System.Web.UI.WebControls.Image is a control that has the ability to render HTML which will make the browser download and display an appointed image
• System.Drawing.Image is a class that has the ability to load an image into memory for manipulating it, or to display it in a control (but not the web image control).

So unfortunately there is no way you can convert a System.Web.UI.WebControls.Image to a System.Drawing.Image; it doesn't even touch the image data.

回答2:

System.Web.UI.WebControls.Image is merely a container for any valid image file specified by the ImageUrl property. If you would like to take the image at the ImageUrl and convert it to a System.Drawing.Image you can call System.Drawing.Image.ImageFromFile("path/to/image").

来源：https://stackoverflow.com/questions/1357826/converting-system-web-ui-webcontrols-image-to-system-drawing-image