剑道网格如何'；s更改EF语句的DataSourceRequest

我有一个Kendo网格，它在控制器中读取以下HttpPost操作：

[HttpPost]
public JsonResult RetrieveBatches([DataSourceRequest] DataSourceRequest request) {
    var original = this._emsRepo.RetrieveDboT_EmsBatches().ToList();
    var changed = this._emsRepo.RetrieveDboT_EmsBatches().ToDataSourceResult(request);
    return this.Json(changed);
}

我有一个实现以下内容的存储库类：

public IEnumerable<DboT_EmsBatches> RetrieveDboT_EmsBatches() {
        return this._con.DboT_EmsBatches.OrderByDescending(x=> x.EmsBatchID);
}

在哪里_con是包含以下内容的上下文：

public DbSet<DboT_EmsBatches> DboT_EmsBatches { get; set; }

通过重写OnModelCreating（）在上下文中使用配置行：

modelBuilder.Configurations.Add(new DboT_EmsBatchesConfiguration());

它是一个简单的配置文件，映射到数据库表：

public DboT_EmsBatchesConfiguration() {
        this.HasKey(t => t.EmsBatchID).ToTable("dbo.T_EmsBatches");
}

我不明白ToDataSourceResult（请求）将如何更改EF发送的IEnumerable甚至select语句？

原始查询将执行sql语句：

SELECT 
[Extent1].[EmsBatchID] AS [EmsBatchID], 
[Extent1].[Description] AS [Description], 
[Extent1].[InsertedTimeStamp] AS [InsertedTimeStamp]
FROM [dbo].[T_EmsBatches] AS [Extent1]
ORDER BY [Extent1].[EmsBatchID] DESC

这是我想要的正确查询。

更改后的请求将发送一条SQL语句：

SELECT 
[Extent1].[EmsBatchID] AS [EmsBatchID], 
[Extent1].[Description] AS [Description], 
[Extent1].[InsertedTimeStamp] AS [InsertedTimeStamp]
FROM ( SELECT [Extent1].[EmsBatchID] AS [EmsBatchID], [Extent1].[Description] AS [Description], [Extent1].[InsertedTimeStamp] AS [InsertedTimeStamp], row_number() OVER (ORDER BY [Extent1].[EmsBatchID] ASC) AS [row_number]
    FROM [dbo].[T_EmsBatches] AS [Extent1]
)  AS [Extent1]
WHERE [Extent1].[row_number] > 0
ORDER BY [Extent1].[EmsBatchID] ASC

我不知道为什么它会更改select语句，因为我的存储库返回的是IEnumerable而不是IQueryable？

using Kendo.DynamicLinq;