private void InitializeGroupedFooSource()
{
NoMoreGroupedFoos = false;
groupedFooSource = new GroupedFooSource(async(currentPage, itemsPerPage) =>
{
GroupedFooResponse response = null;
try
{
IsLoading = true;
response = await fooService.GetGroupedFoos(currentPage, itemsPerPage);
}
catch (Exception ex)//Something completely unexpected happened, write a debug line to ensure persistence of the error
{
//TODO ERROR HANDLING
}
finally
{
IsLoading = false;//Hide the progressbar
}
return(response);
});
this.GroupedFoos = new IncrementalCollection <GroupedFooSource, GroupModel <string, Foo> >(groupedFooSource);
this.GroupedFoos.HasMoreItemsChanged += (s, hasm) =>
{
this.NoMoreGroupedFoos = !hasm.HasMoreItems;
};
}
public async Task <GroupedFooResponse> GetGroupedFoos(int page, int items)
{
GroupedFooResponse response = new GroupedFooResponse();
var fooResponse = await GetFoos(page, items);
var grouped = from f in fooResponse.Foos
group f by f.Category into g
select new GroupModel <String, Foo> {
Key = g.Key, Items = g.ToList()
};
response.GroupedFoos = grouped;
response.HasMoreItems = fooResponse.HasMoreItems;
return(response);
}
