[DevExpress Support Team: CLONED FROM T836336: DataGrid for Blazor - How to show an icon in a column header]
Greeting from 2021.
I suppose this feature is not implemented.
So I want to suggest add some property with type Object to every column's header (like ExtendedProperties in DataTable).
And then put this property to HtmlColumnHeaderCell event parameter.
It's very important for dynamically created column's appearance.
Thanks.
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Sergey,
It's not clear to me how these extended properties similar to DataTable ones will be used in your project. Would you please share pseudocode illustrating what you are trying to achieve and what an HtmlColumnHeaderCell event parameter is? Based on your current scenario, we will see whether we can find a solution now or how your scenario can be supported in the future.