public PagingDataSource(IList <T> dataSource, PagingQuery pagingQuery, int recordCount = 0) :
this(dataSource, pagingQuery.Page, pagingQuery.PageSize, recordCount)
{
}
/// <summary>
/// 获取分页数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="queryableSource"></param>
/// <param name="pagingQuery"></param>
/// <param name="recordCount"></param>
/// <returns></returns>
public static PagingDataSource <T> QueryPagingDataSource <T>(this IQueryable <T> queryableSource, PagingQuery pagingQuery, int recordCount = 0) where T : class
{
if (recordCount == 0 && pagingQuery.IsGetRecordCount)
{
recordCount = queryableSource.Count();
}
return
(ToPagingDataSource(queryableSource.Skip(pagingQuery.GetSkipCount()).Take(pagingQuery.PageSize).ToList(),
pagingQuery, recordCount));
}
public static int GetSkipCount(this PagingQuery query)
{
return((query.Page - 1) * query.PageSize);
}
/// <summary>
/// list 转换为 PagingDataSource
/// </summary>
/// <returns></returns>
public static PagingDataSource <T> ToPagingDataSource <T>(this IList <T> dataSource, PagingQuery pagingQuery, int recordCount = 0) where T : class
{
return(new PagingDataSource <T>(dataSource, pagingQuery.Page, pagingQuery.PageSize, recordCount));
}