private IEnumerable GetServerData(GridCommand command)
{
DataLoadOptions loadOptions = new DataLoadOptions();
loadOptions.LoadWith<Order>(o => o.Customer);
var dataContext = new NorthwindDataContext
{
LoadOptions = loadOptions
};
IQueryable<Order> data = dataContext.Orders;
//Apply filtering
data = data.ApplyFiltering(command.FilterDescriptors);
ViewData["Total"] = data.Count();
//Apply sorting
data = data.ApplySorting(command.GroupDescriptors, command.SortDescriptors);
//Apply paging
data = data.ApplyPaging(command.Page, command.PageSize);
//Apply grouping
if (command.GroupDescriptors.Any())
{
return data.ApplyGrouping(command.GroupDescriptors);
}
return data.ToList();
}
public ActionResult _CustomBinding(GridCommand command)
{
IEnumerable<Order> data = GetData(command);
return View(new GridModel
{
Data = data,
Total = data.Count()
});
}
private bool IsEmptyCommand(GridCommand command)
{
return command.PageSize == 0;
}
public ActionResult CustomServerBinding(GridCommand command)
{
IEnumerable data = GetServerData(!IsEmptyCommand(command) ? command : new GridCommand());
return View(data);
}
private static IEnumerable<Order> GetData(GridCommand command)
{
DataLoadOptions loadOptions = new DataLoadOptions();
loadOptions.LoadWith<Order>(o => o.Customer);
var dataContext = new NorthwindDataContext
{
LoadOptions = loadOptions
};
IQueryable<Order> data = dataContext.Orders;
//Apply filtering
if (command.FilterDescriptors.Any())
{
data = data.Where(ExpressionBuilder.Expression<Order>(command.FilterDescriptors));
}
// Apply sorting
foreach (SortDescriptor sortDescriptor in command.SortDescriptors)
{
if (sortDescriptor.SortDirection == ListSortDirection.Ascending)
{
switch (sortDescriptor.Member)
{
case "OrderID":
data = data.OrderBy(ExpressionBuilder.Expression<Order, int>(sortDescriptor.Member));
break;
case "Customer.ContactName":
data = data.OrderBy(order => order.Customer.ContactName);
break;
case "ShipAddress":
data = data.OrderBy(order => order.ShipAddress);
break;
case "OrderDate":
data = data.OrderBy(order => order.OrderDate);
break;
}
}
else
{
switch (sortDescriptor.Member)
{
case "OrderID":
data = data.OrderByDescending(order => order.OrderID);
break;
case "Customer.ContactName":
data = data.OrderByDescending(order => order.Customer.ContactName);
break;
case "ShipAddress":
data = data.OrderByDescending(order => order.ShipAddress);
break;
case "OrderDate":
data = data.OrderByDescending(order => order.OrderDate);
break;
}
}
}
// ... and paging
if (command.PageSize > 0)
{
data = data.Skip((command.Page - 1) * command.PageSize);
}
data = data.Take(command.PageSize);
return data;
}
