// At application start (before any Syncfusion control is used) SyncfusionLicenseProvider.RegisterLicense("YOUR_LICENSE_KEY_HERE");
Never hardcode your license key directly into your version control system (Git/SVN). Hardcoding leads to security vulnerabilities and makes key rotation difficult. Use Environment Variables
| Mistake | Consequence | Fix | |---------|-------------|-----| | Using the key from email (older format) | Works but may lack newer product support | Always regenerate from the portal | | Adding license in AssemblyInfo.cs for .NET Core | Ignored silently | Place in Program.cs or Startup.cs | | Using trial key in production | App stops working after 30 days | Buy license and regenerate | | Copying spaces or newlines | “Invalid license key” error | Trim string, verify no line breaks |