Entity framework IDBcommandInterceptor和DBDataReader上的EF

我试图在

IDBcommandInterceptor

对于insert/update操作，它足够简单-我可以返回一个由单个字段或int组成的

DbDataReader

但是，对于select操作，如果有一些“include”，那么sql结果的形状是非常漂亮的。。。棒极了

我怎样才能从

ReaderExecuting（DbCommand命令，DbCommandInterceptionContext

结果的字段、名称和相应的实体

谢谢,

示例：尝试从Id中读取

部门（Id，名称），包括在员工（Id，Name.IDDepartment，DateModification，DateCreation，User）上的Id

获取包含的DBDataReader的命令如下所示

我想知道能够模拟的字段名称（如

C1

、

ID1

、

Name1

和其他）

SELECT 
    [Project2].[Id] AS [Id], 
    [Project2].[Name] AS [Name], 
    [Project2].[C1] AS [C1], 
    [Project2].[Id1] AS [Id1], 
    [Project2].[Name1] AS [Name1], 
    [Project2].[IDDepartment] AS [IDDepartment], 
    [Project2].[DateModification] AS [DateModification], 
    [Project2].[DateCreation] AS [DateCreation], 
    [Project2].[User] AS [User], 
    [Project2].[Archive] AS [Archive]
    FROM ( SELECT 
        [Limit1].[Id] AS [Id], 
        [Limit1].[Name] AS [Name], 
        [Extent2].[Id] AS [Id1], 
        [Extent2].[Name] AS [Name1], 
        [Extent2].[IDDepartment] AS [IDDepartment], 
        [Extent2].[DateModification] AS [DateModification], 
        [Extent2].[DateCreation] AS [DateCreation], 
        [Extent2].[User] AS [User], 
        [Extent2].[Archive] AS [Archive], 
        CASE WHEN ([Extent2].[Id] IS NULL) THEN CAST(NULL AS int) ELSE 1 END AS [C1]
        FROM   (SELECT TOP (1) 
            [Extent1].[Id] AS [Id], 
            [Extent1].[Name] AS [Name]
            FROM [dbo].[Department] AS [Extent1]
            WHERE [Extent1].[Id] = @p__linq__0 ) AS [Limit1]
        LEFT OUTER JOIN [dbo].[Employee] AS [Extent2] ON [Limit1].[Id] = [Extent2].[IDDepartment]
    )  AS [Project2]
    ORDER BY [Project2].[Id] ASC, [Project2].[C1] ASC

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通过这样做，您应该能够从读者那里获得列名

var columns = Enumerable.Range(0, reader.FieldCount) .Select(reader.GetName).ToList();

在这种情况下，您只需要名称。如果您获得结果表的整个架构，您可以通过以下操作获得：

DataTable schemaTable = reader.GetSchemaTable();

然后遍历datatable中的行集合，以获取每列的属性

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这有助于回答您的问题吗？

您在这里说的是如何将IDataReader转换为datatable。请重新阅读问题-我没有IDataReader-也不想对数据库运行DbCommand。