How to return an image from an ASP.NET MVC controller?

 To return an image from an ASP.NET MVC controller, you can use the FileResult class, which can return any type of file including images. Here is an example of how to return an image from a controller action:

csharp
public FileResult GetImage(string imageName)
{
    // get the path of the image file
    var imagePath = Server.MapPath("~/Content/Images/" + imageName);

    // read the file into a byte array
    byte[] imageData = System.IO.File.ReadAllBytes(imagePath);

    // return the file as a byte array and specify the content type
    return File(imageData, "image/jpeg");
}

In this example, the GetImage action takes the name of the image as a parameter, reads the image file into a byte array, and returns the file as a FileResult with the content type set to "image/jpeg". The file is assumed to be located in the "~/Content/Images/" folder.

You can then call this action from a view using an image tag, like this:

html
<img src="@Url.Action("GetImage", "ControllerName", new { imageName = "myimage.jpg" })" alt="My Image" />

In this example, the "GetImage" action is called from the "ControllerName" controller, passing the name of the image file as a parameter. The Url.Action() method generates the URL for the action, which is then used as the source for the image tag.