|
public static SortAutomobiles ( IQueryable |
||
| automobiles | IQueryable |
|
| sortExpression | string | |
| sortDirection | SortDirection, | |
| return | IQueryable |
|
protected void CarsGridView_Sorting(object sender, GridViewSortEventArgs e)
{
SortDirection sortDirection = SortingUtility.GetSortDirection(ViewState);
ViewState[CarServiceConstants.SORT_DIRECTION_VIEW_STATE_ATTR] = sortDirection;
ViewState[CarServiceConstants.SORT_EXPRESSION_VIEW_STATE_ATTR] = e.SortExpression;
IQueryable <Automobile> automobiles = this.persister.GetAutomobiles();
IQueryable <Automobile> sortedAutomobiles = SortingUtility.SortAutomobiles(automobiles, e.SortExpression, sortDirection);
BindAutomobilesGrid(sortedAutomobiles);
}
private void BindAutomobilesGrid()
{
object sortDirectionObj = ViewState[CarServiceConstants.SORT_DIRECTION_VIEW_STATE_ATTR];
object sortExpressionObj = ViewState[CarServiceConstants.SORT_EXPRESSION_VIEW_STATE_ATTR];
IQueryable <Automobile> automobiles = this.persister.GetAutomobiles();
IQueryable <Automobile> sortedAutomobiles;
if (sortDirectionObj != null && sortExpressionObj != null)
{
sortedAutomobiles = SortingUtility.SortAutomobiles(automobiles, sortExpressionObj.ToString(),
(SortDirection)sortDirectionObj);
}
else
{
ViewState[CarServiceConstants.SORT_DIRECTION_VIEW_STATE_ATTR] = SortDirection.Ascending;
ViewState[CarServiceConstants.SORT_EXPRESSION_VIEW_STATE_ATTR] = CarServiceConstants.AUTOMOBILE_ID_SORT_EXPRESSION;
sortedAutomobiles = automobiles;
}
BindAutomobilesGrid(sortedAutomobiles);
}