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  • 让Ef.DbContext输出SQL

    1、在YourDbContext构造函数中配置Database.Log。

    1 public partial class XxxEntities: DbContext
    2     {
    3         public XxxEntities()
    4             : base("name=XxxEntities")
    5         {
    6             System.Diagnostics.Debug.WriteLine("--实例化DbContext--");
    7             Database.Log = x => { System.Diagnostics.Debug.WriteLine(x); };
    8         }
    9     }

    2、在Debug(F5)环境下测试,才能在output窗口中输出SQL信息。

     1 --实例化DbContext--
     2 已于 2015/6/2 12:51:38 +08:00
     3  打开了连接
     4 SELECT 
     5     [Extent1].[CoSetID] AS [CoSetID], 
     6     [Extent1].[BeginTime] AS [BeginTime], 
     7     [Extent1].[EndTime] AS [EndTime], 
     8     [Extent1].[CreateTime] AS [CreateTime], 
     9     [Extent1].[CreatorID] AS [CreatorID], 
    10     [Extent1].[Creator] AS [Creator], 
    11     [Extent1].[LastUpdateTime] AS [LastUpdateTime], 
    12     [Extent1].[LastEditorID] AS [LastEditorID], 
    13     [Extent1].[LastEditor] AS [LastEditor], 
    14     [Extent1].[IsEnabled] AS [IsEnabled], 
    15     [Extent1].[IsDeleted] AS [IsDeleted], 
    16     [Extent1].[Timestamp] AS [Timestamp]
    17     FROM [dbo].[CourseSet] AS [Extent1]
    18     WHERE 0 = [Extent1].[IsDeleted]
    19     ORDER BY [Extent1].[BeginTime] ASC
    20 
    21 
    22 -- 正在 2015/6/2 12:51:39 +08:00
    23  执行
    24 -- 已在 25 毫秒内完成,结果为: SqlDataReader
    25 
    26 
    27 
    28 已于 2015/6/2 12:51:39 +08:00
    29  关闭了连接

    默认情况下,VS会输出许多其它类型的消息,但是可以在output窗口中右击选择需要输出的消息类型。

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  • 原文地址:https://www.cnblogs.com/ToughGuy/p/4546133.html
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