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[ASP.net教程]linq分页扩展


直接上代码了

public static List<T> ToPagedList<T>(this IEnumerable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, int>> keySelector)    {      var itemList = allItems.Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IEnumerable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, bool>> keySelector)    {      var itemList = allItems.Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IEnumerable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, string>> keySelector)    {      var itemList = allItems.Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IEnumerable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, DateTime>> keySelector)    {      var itemList = allItems.Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IQueryable<T> allItems, int pageIndex, int pageSize, Expression<Func<T,int>> keySelector)    {      var itemList = allItems.OrderBy(keySelector).Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IQueryable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, bool>> keySelector)    {      var itemList = allItems.OrderBy(keySelector).Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IQueryable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, string>> keySelector)    {      var itemList = allItems.OrderBy(keySelector).Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }    public static List<T> ToPagedList<T>(this IQueryable<T> allItems, int pageIndex, int pageSize, Expression<Func<T, DateTime>> keySelector)    {      var itemList = allItems.OrderBy(keySelector).Skip(pageSize * (pageIndex - 1)).Take(pageSize).ToList();      return itemList;    }