Class ImageResult

An IActionResult implementation that returns an image file as response, optionally resized and cached for a client.

Inheritance
object
ImageResult
Implements
Inherited Members
Namespace: DataWeb.ActionResults
Assembly: DataWeb.Core.dll
Syntax
public sealed class ImageResult : IActionResult
Remarks

Handles HTTP caching via Cache-Control: max-age and Last-Modified headers. The response returns a 200 OK with image data or 304 Not Modified if the client's cached version is still valid.

Constructors

ImageResult(IImageService, IFile, int, int, ResizeMode, int, bool, bool, bool, string, Func<object, Task>)

An IActionResult implementation that returns an image file as response, optionally resized and cached for a client.

Declaration
public ImageResult(IImageService imageService, IFile file, int width, int height, ResizeMode resizeMode, int cacheSeconds = 31536000, bool isMetaDataRemoval = false, bool isCutDisabled = false, bool isOriginalFormat = false, string imageContext = null, Func<object, Task> imageProcessDelegate = null)
Parameters
Type Name Description
IImageService imageService

The image service responsible for processing and retrieving the image.
IFile file

The image file to be processed and returned.
int width

The desired width for the resized image, in pixels.
int height

The desired height for the resized image, in pixels.
ResizeMode resizeMode

The ResizeMode algorithm to apply when resizing.
int cacheSeconds

The duration, in seconds, for client-side caching via Cache-Control: max-age. Defaults to one year (31,536,000 seconds).
bool isMetaDataRemoval

If true, removes EXIF and metadata from the thumbnail.
bool isCutDisabled

If true, disables the crop operation defined in the file settings.
bool isOriginalFormat

If true, preserves the original file format instead of converting to WebP.
string imageContext

Optional context identifier to differentiate cached thumbnail variants of the same image.
Func<object, Task> imageProcessDelegate

Optional custom processing delegate to apply to the image during thumbnail generation.
Remarks

Handles HTTP caching via Cache-Control: max-age and Last-Modified headers. The response returns a 200 OK with image data or 304 Not Modified if the client's cached version is still valid.

Methods

ExecuteResultAsync(ActionContext)

Declaration
public Task ExecuteResultAsync(ActionContext context)
Parameters
Type Name Description
ActionContext context
Returns
Type Description
Task

Implements