I started looking at the DataGrid and a have some feedback.
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When column data is too long (there will always be an email address longer than the others), it is hidden with "..." and there's no way to see or access the data. (what's the use of a grid that doesn't give you the data?)
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When clicking on column headers that are not sortable and not filterable, it shows a selection black box around the column which is ugly. This doesn't happen for sortable columns, and this happens in Radzen sample apps, such as the "Photo" column.