********************** ClosedXML Installation ********************** ==================== Installing ClosedXML ==================== The easiest way to add ClosedXML to your project is to install it using the NET CLI. .. code-block:: batch C:\source> dotnet add package ClosedXML =============== SixLabors.Fonts =============== ClosedXML depends on the ``SixLabors.Fonts`` library that is only available as a beta. The legacy ``package.config`` nuget dependency resolution ignores prerelease packages during installation, resulting in the following error: .. error:: :: Unable to resolve dependency 'SixLabors.Fonts'. Source(s) used: 'nuget.org', 'Microsoft Visual Studio Offline Packages'. To solve the error, choose one of the possible solutions: -------------------- Use PackageReference -------------------- Migrate from ``package.config`` to ``PackageReference``. ``package.config`` has been deprecated for 5 year and there is a full-fledged replacement that is better in every way that works on .NET Framework. If you use ``PackageReference`` style, the ClosedXML is installed without the error. See `Migrate from packages.config to PackageReference `_ and related pages. ----------------------------- Install SixLabors.Fonts first ----------------------------- Install ``SixLabors.Fonts-beta18`` package and then install ClosedXML package. This way, you can install the ClosedXML even for the ``package.config`` nuget restore. --------------------- Use prerelease switch --------------------- Open the *Package Manager Console* and specify the ``-IncludePrerelease`` switch during installation. .. code-block:: batch PM> Install-Package ClosedXML -Version 0.97.0 -Verbose -IncludePrerelease ========================== Compatible implementations ========================== ClosedXML is a .NET Standard 2.0 library that runs on any compatible implementation (.NET Core 2.0+, .NET Framework 4.6.2, Blazor). ClosedXML doesn't work on Unity due to Unity `script engine `_.