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FooterTemplate throws error

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Nick
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Nick asked on 17 Sep 2020, 10:16 PM

     When attempting to implement a Footer Template on a Grid Column, I am getting the following runtime errors: "Unhandled exception rendering component: Value cannot be null" and "Unhandled exception rendering component: Object reference not set to an instance of an object". I have tried something as simple as 

<FooterTemplate>

Test

</FooterTemplate>

And I still get that error, otherwise I get no errors on rendering the page without the FooterTemplate tags within the Grid Column.

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Marin Bratanov
Telerik team
answered on 17 Sep 2020, 10:55 PM

Hello Nick,

My best guess is that the project references an older version that does not recognize the footer - it is available in 2.17.0. If you have updated the package reference, try cleaning the project, even deleting the bin and obj folders - sometimes old versions get cached there.

If this does not help, I recommend opening a ticket where you can send is a simple runnable project that shows the problem so we can have a look at it.

 

Regards,
Marin Bratanov
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Cesar Augusto
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answered on 02 Oct 2020, 01:53 AM
i get this error.  Error: System.ArgumentNullException: Value cannot be null. (Parameter 'source')
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Marin Bratanov
Telerik team
answered on 02 Oct 2020, 10:44 AM

Hi Cesar,

You can Follow a fix for this and see a workaround (initializing the Data collection of the grid so it is not null) here: https://feedback.telerik.com/blazor/1486142-footertemplate-throws-when-grid-data-is-null

 

Regards,
Marin Bratanov
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Marin Bratanov
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