Hi Mohammed,
The provided code snippets appear to be set up correctly. However, it is important to point out that the EditorViewData option is used for passing additional data to the editor template. Therefore, it would be more accurate if you set the following option instead:
columns.Bound(x => x.Note).EditorTemplateName("TextArea");
In case the issue persists, share a sample in which the faulty behavior could be observed.
Regards,
Tsvetomir
Progress Telerik