Sets or returns the 23-character license key that enables ExcelWriter for the current instance.

 public System.String LicenseKey{ get; set; }
Public Property LicenseKey() As String

This key does not persist once the code completes execution. If this property is set, ExcelWriter will use this key and ignore any keys in the registry.

          //--- Get LicenseKey
          string key = xlt.LicenseKey;

          //--- Set LicenseKey
          ExcelTemplate xlt = new ExcelTemplate();
          xlt.LicenseKey = "XXXXXX-XXXX-XXXX-XXXXXX";
         '--- Get LicenseKey
          Dim key As String = xlt.LicenseKey

          '--- Set LicenseKey
          Dim xlt As New ExcelTemplate()
          xlt.LicenseKey = "XXXXXX-XXXX-XXXX-XXXXXX"