추가된 SortDescriptions가 잘못되었습니다. 문제를 해결하려면 Column의 CanUserSort를 false로 설정하거나, Column에서 SortMemberPath 속성을 사용하거나, DataGrid에서 Sorting 이벤트를 처리하십시오.
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English version
The SortDescriptions added are not valid. The probable solutions are to set the CanUserSort on the Column to false, or to use SortMemberPath property on the Column, or to handle the Sorting event on DataGrid.
.Net Framework