I'm using a RadGrid to load data for one table and when I sort that table and then loud another RadGrid I get the error No property or field 'ElaScaleScore' exists in type 'AssessmentGradePerformanceResultsData'. The ElaScaleScore is the sorted column on the first grid and the column doesn't exist on the second grid. How can I fix the second grid so it doesn't try to sort on a column that doesn't exist?