CacheableContentResult 1.1.3

.NET Standard 1.6 .NET Framework 4.0
dotnet add package CacheableContentResult --version 1.1.3
NuGet\Install-Package CacheableContentResult -Version 1.1.3
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="CacheableContentResult" Version="1.1.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add CacheableContentResult --version 1.1.3
#r "nuget: CacheableContentResult, 1.1.3"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install CacheableContentResult as a Cake Addin
#addin nuget:?package=CacheableContentResult&version=1.1.3

// Install CacheableContentResult as a Cake Tool
#tool nuget:?package=CacheableContentResult&version=1.1.3

CacheableContentResult NuGet Package

What's this? / これは何か?

This is the class library that is ActionResult of ASP.NET MVC .

This ActionResult class for ASP.NET MVC allows you to send a binary contents response that can cache based on Etag, and/or last modified date, to web browser.

If the cache hit, then this class send "HTTP 304 Not Modified" without calling contents retrieving callback, and witout content body.

これは ASP.NET MVC の ActonResult であるクラスライブラリです。

この ActionResult は Etag および最終更新日によるキャッシュ制御された任意のバイナリコンテンツをWebブラウザに応答することができます。

要求ヘッダの If-Modified-Since および If-Match-None からキャッシュヒットが判断できた場合は、コンテンツ本体を返すことなく、HTTP 304 Not Modified をブラウザに返します。

How to install? / インストール方法

You can install this libray as a NuGet package into your ASP.NET MVC Web Appliction project on Visual Studio via

Visual Studio 上の ASP.NET MVC Web アプリケーションに NuGet パッケージとして 経由でインストールできます。

PM> Install-Package CacheableContentResult

How to use? / 使い方

public ActionResult Picture(int id)
  var imagePath = HttpContext.Server.MapPath("~/App_Data/user/{id}/picture.png");
  var lastWriteTime = System.IO.File.GetLastWriteTimeUtc(imagePath);

  return new CacheableContentResult(
    contentType: "image/png",
    lastModified: lastWriteTime,
    getContent: () =>
      return System.IO.File.ReadAllBytes(imagePath);


Return the instance of CachebleContentResult class in MVC action method specified with ETag, and/or the date time of last modified, and the function which return the binary content as byte[] to responding you want.

The function which return the content you specified does not call if not needed, then you can implement "lazy loading".

See the example.

MVC アクションメソッド内で、ETag、および/あるいは最終更新日、そして応答に返したいバイナリコンテンツを byte[] で返す関数を指定した CachebleContentResult クラスのインスタンスを返します。


例は こちら を参照ください。

License / ライセンス

Mozilla Public License Version 2.0 / Microsoft Public License (MS-PL)

(* dual license )

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows net7.0 net7.0-android net7.0-ios net7.0-maccatalyst net7.0-macos net7.0-tvos net7.0-windows
.NET Core netcoreapp1.0 netcoreapp1.1 netcoreapp2.0 netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Standard netstandard1.6 netstandard2.0 netstandard2.1
.NET Framework net40 net403 net45 net451 net452 net46 net461 net462 net463 net47 net471 net472 net48 net481
MonoAndroid monoandroid
MonoMac monomac
MonoTouch monotouch
Tizen tizen30 tizen40 tizen60
Xamarin.iOS xamarinios
Xamarin.Mac xamarinmac
Xamarin.TVOS xamarintvos
Xamarin.WatchOS xamarinwatchos
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.1.3 1,117 12/25/2018
1.1.2 967 4/24/2017
1.1.1 863 4/24/2017 1,315 1/13/2016
1.0.0 1,720 3/9/2013

- Fix: Doesn't work in some cases.
- Update license - MPL v2 and MS-PL dual licenses.
- Add .NET Core applications support.
- Fix: "If-Modified-Since" based cache doesn't work correctly.
- If the function of GetContent property returned null, then respond "HTTP 404 Not Found" status.
- 1st release.