LINQ IQueryable 使用 skip 和 take 返回相同的行

Question

使用 MVC Entity Framework 我正在使用 AJAX 调用一个函数，该函数传入 skip 并获取参数。

[HttpGet]
public async Task<ActionResult> _ViewMore( int take, int skip)
{
    var c = await GetContent( take, skip);
    return View(c)
}

public async Task<List<PartialContent>> GetContentForCulture(int take, int skip)
{           
    return await ContextHelper.SearchContent(take, skip);
}

public static async Task<List<PartialContent>> SearchContent( int take, int skip)
{
    try
    {
        using (var context = new Context())
        {
            var content = context.ContentEntities.SearchContent(take, skip);

            var f = await content.Select(s => new PartialContent
            {
                Subtype = s.Subtype,
                Id = s.Id,
                MainImage = s.MainImage,

            }).ToListAsync();

            return f;
        }
    }
    catch (Exception ex)
    {
        //      Log.Err(ex.Message, ex);
        return null;
    }
}

public static IQueryable<T> SearchContent<T>(this IQueryable<T> source,  int take, int skip)
    where T : ContentEntity
{
    source.Where(m => m.IsPublished ).OrderByDescending(m => m.DatePublished).Skip(skip).Take(take)

}

我的问题是每次我调用函数时都会返回相同的行，即使我进行了调试并且跳过值增加了，而且我有 100 多行要从中获取。

Answer 1

    //pageSize is how many rows you want to skip every time and 
    //index is like page number first time index should be 0 then 1 every time index will be increased by one 
    var c = await  context.ContentEntities.Skip(pageSize * index).Take(pageSize).ToListAsync();

Answer 2

解决方案是按照 Damien_The_Unbeliever

的建议添加另一个 order by 子句

LINQ IQueryable 使用 skip 和 take 返回相同的行

LINQ IQueryable returning same rows with skip and take

c#

asp.net-mvc

entity-framework

linq

take