Using IronXL License Keys

Get Your License Key

IronXL license keys allow you to deploy your project live without any watermark.

Licenses start at just $499 and include one free year of support and updates.

You can also try IronXL free for 30 days with a trial license key.

Step 1: Download the Latest Version of IronXL

The first thing we need to do is install the IronXL.Excel library, adding Excel functionality to the .NET framework.

Install with Nuget Package

In Visual Studio, right-click on the project select "Manage Nuget Packages ..."
Search for the IronXL.Excel package and install

Enter the Package Manager Console
Type > Install-Package IronXL.Excel

PM > Install-Package IronXL.Excel

View the package on the NuGet site here.

DLL Direct Download Installation
Download the IronXL .NET Excel DLL and manually install into Visual Studio.

Step 2: Apply Your License Key

Set the license key inside your code

Add this code to the startup of your application, before IronXL is used.

C#:

IronXL.License.LicenseKey = "IRONXL-MYLICENSE-KEY-1EF01";

VB:

IronXL.License.LicenseKey = "IRONXL-MYLICENSE-KEY-1EF01"

Set your key using Web.Config or App.Config in .NET Framework Applications

To apply a key globally to your application using Web.Config or App.Config, add the following key to your config file in appSettings.

<configuration>
   ....
   <appSettings>
      <add key="IronXL.LicenseKey" value="IronXL-MYLICENSE-KEY-1EF01"/>
   </appSettings>
   ....
</configuration>

Ensure that IronXL.License.IsLicensed returns true to verify.

Set your key using a .NET Core appsettings.json file

To apply a key globally to your application to a .Net Core:

Add a JSON file to your project called appsettings.json in the root directory of your project
Add a 'IronXL.LicenseKey' key to your JSON config file. The value should be your license key.
Ensure that the file properties include Copy to Output Directory: Copy always
Ensure that IronXL.License.IsLicensed returns true to verify.

File: appsettings.json

{

    "IronXL.LicenseKey":"IronXL-MYLICENSE-KEY-1EF01"

}

Step 3: Test your key

Test if your key has been installed correctly.

C#:

// Check if a given license key string is valid.
bool result = IronXL.License.IsValidLicense("IronXL-MYLICENSE-KEY-1EF01");
// Check if IronXL is licensed successfully 
bool is_licensed = IronXL.License.IsLicensed;

VB:

' Check if a given license key string is valid.
Dim result As Boolean = IronXL.License.IsValidLicense("IronXL-MYLICENSE-KEY-1EF01")
' Check if IronXL is licensed successfully 
Dim is_licensed As Boolean = IronXL.License.IsLicensed

Note: After adding a license always remember to clean and republish you application to avoid potential mistakes in deployment.