public async void GetItemsItemOffsetPagination()
{
string endPoint = "http://MyRestApiEndPoint.com";
var maxRecordsParam = 20;
var offsetParemeterName = "offset";
var pageSizeParemeterName = "limit";
var orderByParameterName = "order_by";
var orderByParameterValue = "date";
var orderDirectionParameterName = "order";
var orderDirectionParameterValue = "DESC";
var paginationConfig = new ItemOffsetPagination(offsetParemeterName, true, pageSizeParemeterName, maxRecordsParam)
{
OrderByParameterName = orderByParameterName,
OrderByParameterValue = orderByParameterValue,
OrderDirectionParameterName = orderDirectionParameterName,
OrderDirectionParameterValue = orderDirectionParameterValue
};
var config = new RestApiDataConfig()
{
Url = new Uri(endPoint),
PaginationConfig = paginationConfig
};
var parser = new JsonParser<MySchema>();
_dataProvider = new RestApiDataProvider();
var items = await _dataProvider.LoadDataAsync(config, maxRecordsParam, parser);
foreach (var item in items)
{
Items.Add(item);
}
}
private IPagination GetPaginationConfig()
{
IPagination pagination = null;
switch (PaginationParameterType)
{
case PaginationParameterType.PageNumber:
pagination = new PageNumberPagination(PaginationParameterName, IsZeroIndexed, PageSizeParameterName);
break;
case PaginationParameterType.ItemOffset:
pagination = new ItemOffsetPagination(PaginationParameterName, IsZeroIndexed, PageSizeParameterName, MaxRecordsParam);
break;
case PaginationParameterType.Token:
pagination = new TokenPagination(PaginationParameterName, ResponseTokenName, PageSizeParameterName);
break;
case PaginationParameterType.NextPageUrl:
pagination = new NextPageUrlPagination(ResponseTokenName, PageSizeParameterName);
break;
case PaginationParameterType.None:
default:
return null;
}
pagination = GetSorting(pagination);
return pagination;
}