如何将空值传递给url.content（）并显示结果

Question

I want to display images using url.content() in MVC using an img tag. I succeeded, but it displays an 'argument exception' error when there are some empty images, so I want to show null images also. Here is my code.

<img src="@Url.Content(item.image)" alt="Image" height="50" width="50"  class="img-circle img-responsive" />

It succeeds when it has value but I want empty images also.

Answer 1

Assuming "empty images" as HTTP 404 requests, you can do the following

<img src="@Url.Content(item.image ?? "~/empty-image.jpg")" alt="Image" height="50" width="50"  class="img-circle img-responsive" />

And substitute "~/empty-image.jpg" with a valid URL pointing to an appropriate image hosted on your website.

Otherwise, as other mentioned, just wrap your code into an if-statement using string.IsNullOrEmpty method.