Set SortingState on Column
Generally, each GridViewColumn enables you to set it in a specific sorting state. This may be easily done by defining its corresponding property SortingState. It may have the following values:
- Ascending;
- Descending;
- None.
As it comes to RadGridView, this approach represents custom sorting logic and as being such, you have to set one more property - IsCustomSortingEnabled:
Example 1: Setting SortingState for a column.
<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" SortingState="Ascending" IsCustomSortingEnabled="True"/>
For further information on implementing custom sorting you may run through the Custom Sorting article.