Licensing Issue

[Luke]

Good Evening All,

I have recently secured a new Teleik Developer License, and I have updated the controls to the latest version.

When I run my application from within Visual Studio 2022 i am getting an error message displayed across my forms as shown below.

I have clicked on the help button and followed all the steps on the following web link (https://docs.telerik.com/devtools/winforms/licensing/license-key).  I have tried the automatic and the manual installation methods; however, the message is still showing.  I have confirmed that the telerik-license.txt file has been downloaded as well.

Can you please assist with this so I can get the message removed?  

Thank you in advanced.

[Nadya | Tech Support Engineer]

Hello, Luke,

It seems you already downloaded the license key and it is downloaded in telerik-license.txt file, but can you confirm that this telerik-license.txt file is located in your AppData\Roaming\Telerik directory on your machine. 

Also, you should install the Telerik.Licensing NuGet package from nuget.org. It will add the Telerik.Licensing.Runtime assembly in your project, which is required to activate the WinForms controls. Can you confirm you downloaded the nuget as well? In case you have more that one projects in the solution, note that you need to install the licensing nuget to your top-level project as well. 

When you build the project, the Telerik.Licensing NuGet package automatically locates the license file and uses it to activate the WinForms controls.

The exact steps to obtain a license are described here (steps 1 and 2): Activating the Telerik UI for WinForms Components

Can you follow these steps and let me know whether the watermark disappears on your side?

Regards,
Nadya | Tech Support Engineer
Progress Telerik

[Luke]

Hi Nadya,

I can confirm that the telerik-license.txt file is located within the AppData\Roaming\Telerik folder.  Also the NuGet package has been successfully installed and I have also updated this to the latest version.

With this in mind i believe that i have followed all the steps you mention and the watermark is still displaying and is not being removed.  

I have included an image below showing this.

I look forward to hearing from you regarding this.

Kind Regards

Luke

[Nadya | Tech Support Engineer]

Hello, Luke,

I noticed from the attached picture that your project is actually a Word-Addin project. Can you please confirm that?

In MS Office Add-in projects, you should call the TelerikLicensing.Register method (without parameter) at the very start of your project, before any Telerik component is initialized. The Register method is in Telerik.Licensing namespace.

You can use the following:

Public Partial Class ThisAddIn
    Shared Sub New()
        ' in the project start-up 
        Telerik.Licensing.TelerikLicensing.Register()
    End Sub
End Class

Alternatively, you can call it before InitializeComponent() of the form. Then, rebuild the project.

After that, it is not expected watermark to show in your Add-In application using the Telerik product.

Can you please follow these steps and let me know if the watermark disappears on your side?

[Ian]

I have a very similar issue. Except in my case, my VS solution is an addin to Sparx EA.

I also have

• downloaded the telerik-license.txt file,
• it is in the correct /Appdata location.
• downloaded and installed the Telerik.License nuget package, and
• Telerik.Licensing.TelerikLicensing.Register() being called at the first opportinity, before any WinForms calls are made.
• ...and I also still get the watermark. 

I have run out of ideas as well.

[Nadya | Tech Support Engineer]

Hello, Ian,

Please see my reply in Ticket ID: 1701786. You can find it in your Telerik account.