If you are developing a that generates, programmatically edits, or converts Microsoft Word documents without requiring Microsoft Office, setting this static property correctly is mandatory. Failing to apply a valid key, or placing it in the wrong segment of your execution lifecycle, will instantly trigger a runtime LicenseException that breaks your document workflow.
When your application initializes, the library checks this property. If a valid, non-expired key is detected, the library unlocks its full capabilities. If the key is missing or invalid, the library defaults to Trial Mode. Trial Mode vs. Licensed Mode xceed.words.net.licenser.licensekey
: First, ensure you have a valid license for Xceed Words for .NET. This usually involves purchasing a license from the official Xceed Software website or through an authorized reseller. If you are developing a that generates, programmatically
The key itself is a string of characters. For , this key will always begin with the prefix WDN . For example, a key might look like WDNXX-XXXXX-XXXXX-XXXX . It's important to use the entire key as provided to you. If a valid, non-expired key is detected, the
If you do not set this property, the library operates in trial mode. This mode injects trial warning text into generated documents or throws runtime exceptions after the evaluation period expires. This article provides a comprehensive technical breakdown of how, where, and why to implement the Xceed.Words.NET.Licenser.LicenseKey in your applications. Why Is the License Key Required?
For modern C# applications using Top-Level Statements or a traditional static main method, execute the assignment at the absolute top of Program.cs .