Gets or sets another field by which data is sorted when sorting is applied to the current column.
A string that specifies a field name.
GridControl's default sorting and grouping behavior is as follows. On clicking a column header or changing the ColumnBase.SortOrder property, data is sorted by the corresponding field. On grouping against a column, data groups are created based on the values of this column.
The SortFieldName property allows you to change this behavior. When sorting/grouping is applied to a specific column, you can sort/group data against another field instead. To do this, set the SortFieldName property to the required field name.