Pre-sorting a DataGrid in WPF

Question

I have a DataGrid in WPF app with several columns, including a Name column. If the users switches to a particular view, I want the data to be pre-sorted by Name

Answer 1

This works for me.

ListSortDirection sortDirection;
int selectedColumnIndex;
private void customerDataGrid_Sorting(object sender, DataGridSortingEventArgs e)
{
    selectedColumnIndex = e.Column.DisplayIndex;
    sortDirection = (e.Column.SortDirection == ListSortDirection.Ascending ? ListSortDirection.Descending: ListSortDirection.Ascending);
}

private void applySortDescriptions(ListSortDirection listSortDirection)
{
    //Clear current sort descriptions 
    customerDataGrid.Items.SortDescriptions.Clear();

    //Get property name to apply sort based on desired column 
    string propertyName = customerDataGrid.Columns[selectedColumnIndex].SortMemberPath;

    //Add the new sort description 
    customerDataGrid.Items.SortDescriptions.Add(new SortDescription(propertyName, listSortDirection));

    //apply sort 
    applySortDirection(listSortDirection);

    //refresh items to display sort 
    customerDataGrid.Items.Refresh();
}

private void applySortDirection(ListSortDirection listSortDirection)
{
    customerDataGrid.Columns[selectedColumnIndex].SortDirection = listSortDirection;
}