Hello Lee,

I've reviewed this request and the ticket that caused it and what I can say at this point is the following:

• Templates themselves cannot be exported, this is how the framework operates. There is no facility for that in the framework, and they can also be any arbitrary content so we can't put that in an exported file. This is why we have documented this in the Notes section.
• The grid already renders the data from the Field of the column, so templated columns can actually participate in the export
• By following this sample project, you can easily add complex content to tooltips in those cells.

I am also adding here a couple of sample I made for you that showcase the behavior - how templated columns can be exported, and how you can have custom tooltips for them in the web UI.

You can find those samples at the end of my post.

With this in mind, I must mark this as "completed", because the feature is already there, together with the other customization options requested in the original ticket, and there is no facility in the framework that can allow this to be enhanced further.

Nevertheless, there are many improvements planned around the excel export, to name the most relevant ones here so you can click the Vote and Follow buttons for them if you also find them interesting:

• The ability to set a format for the columns for exporting purposes: https://feedback.telerik.com/blazor/1481023-custom-format-for-excel-export-per-column
• The ability to export all pages when using the OnRead event: https://feedback.telerik.com/blazor/1469312-include-all-pages-in-excel-export-should-work-with-onread
• The ability to use columns in the grid whose width is not set in px and still have them render in the export (work around an Excel limitation): https://feedback.telerik.com/blazor/1478639-excel-export-should-work-with-columns-whose-width-is-not-set-in-pixels
• Set column visibility for the export operation only - this can be useful if you want to add some columns with additional data that you show in a tooltip in the web UI: https://feedback.telerik.com/blazor/1479440-blazor-grid-export-columns-only-visible-for-export
• The ability to alter the exported file the grid generates before the user downloads it: https://feedback.telerik.com/blazor/1485764-customize-the-excel-file-before-it-gets-to-the-client
• Culture awareness for date exports (if that turns out to be impossible - see the thread for more details on yet another set of Excel limitations and quirks that make it incompatible with .NET apps - you'd probably have the ability to set custom formats through the first item in the list): https://feedback.telerik.com/blazor/1492859-use-culture-aware-format-for-datetime-in-excel-export-the-ones-that-show-up-as-date-in-the-format-cell-and-with-an-asterisk-if-that-s-not-possible-use-yyyy-mm-dd-hh-mm-ss

Regards,
Marin Bratanov
Progress Telerik