IDbCommandInterceptor.ScalarExecuted 方法
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
在 EF 调用 后立即调用 ExecuteScalar()。
public object ScalarExecuted (System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData eventData, object result);
public object? ScalarExecuted (System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData eventData, object? result);
public virtual object? ScalarExecuted (System.Data.Common.DbCommand command, Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData eventData, object? result);
abstract member ScalarExecuted : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData * obj -> obj
abstract member ScalarExecuted : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData * obj -> obj
override this.ScalarExecuted : System.Data.Common.DbCommand * Microsoft.EntityFrameworkCore.Diagnostics.CommandExecutedEventData * obj -> obj
Public Function ScalarExecuted (command As DbCommand, eventData As CommandExecutedEventData, result As Object) As Object
Public Overridable Function ScalarExecuted (command As DbCommand, eventData As CommandExecutedEventData, result As Object) As Object
参数
- command
- DbCommand
命令。
- eventData
- CommandExecutedEventData
有关命令和执行的上下文信息。
- result
- Object
调用 ExecuteScalar()的结果。 此值通常用作此方法实现的返回值。
返回
EF 将使用的结果。
对于未尝试更改结果的任何侦听器,此方法的实现是返回 result
传入的值。
注解
如果侦听器在 中 ScalarExecuting(DbCommand, CommandEventData, InterceptionResult<Object>)禁止执行命令,则仍会调用此方法。 在本例中, result
是 返回 ScalarExecuting(DbCommand, CommandEventData, InterceptionResult<Object>)的结果。