This example illustrates how to sort a column in WPF DataGrid by enabling AllowSorting property for SfDataGrid or corresponding column
<syncfusion:SfDataGrid x:Name="dataGrid"
AllowSorting="False"
ShowSortNumbers="True"
ItemsSource="{Binding Orders}">
<syncfusion:SfDataGrid.Columns>
<syncfusion:GridTextColumn MappingName="OrderID" />
<syncfusion:GridTextColumn MappingName="CustomerID" AllowSorting="True"/>
<syncfusion:GridTextColumn MappingName="CustomerName" AllowSorting="True"/>
<syncfusion:GridTextColumn MappingName="Country"/>
<syncfusion:GridTextColumn MappingName="ShipCity" AllowSorting="True"/>
</syncfusion:SfDataGrid.Columns>
</syncfusion:SfDataGrid>
Visual Studio 2015 and above versions