https://github.com/HandyOrg/HandyControl/blob/0762db0fb4b4a7378d8b8b783d09d30e7c306092/src/Shared/HandyControl_Shared/Controls/Attach/TextBlockAttach.cs#L18 It will overwrite the user defined `TextTrimming`, in my case it will overwrite my `CharacterEllipsis` to `WordEllipsis`. -------------- ### `TextTrimming.WordEllipsis`  -------------- ### `TextTrimming.CharacterEllipsis` 