int不包含Getawaiter + asp.net核心web api異步定義

我想爲我的應用程序使用asp.net核心webapi實現異步CRUD功能。我被告知只使用存儲過程來處理對數據庫的任何請求。我已經實現了獲取請求的異步，但爲創建請求掙扎。有人能告訴我我的代碼中我做錯了什麼？int不包含Getawaiter + asp.net核心web api異步定義

我在代碼中的await行收到以下錯誤消息在我的倉庫方法

控制器的方法：

[HttpPost] 
[Route("api/Movies")] 
public async Task<IActionResult> CreateMovie([FromBody] MoviesDto movies) 
{ 
    if (movies == null) 
    { 
     return BadRequest(); 
    } 

    // Check if movie exists 
    var movie = _moviesRepository.GetMovie(movies.MovieId); 

    if (movie == null) 
    { 
     return NotFound(); 
    } 

    var results = Mapper.Map<Movies>(movies); 

    if (ModelState.IsValid) 
    { 
     await _moviesRepository.AddMovie(results); 
    } 

    return Ok(results); 
}

庫方法：

public async Task AddMovie(Movies movie) 
{ 
    await _mrdbContext.Database.ExecuteSqlCommand("dbo.spInsertMovie {0}, {1}, {2}, {3}, {4}, {5}", movie.Title,movie.ReleaseYear,movie.Plot,movie.MovieLength,"Ranjit Menon",""); 
}

新的存儲庫方法：

public async Task AddMovie(Movies movie) 
{ 
    object[] parameters = 
      { 
       new SqlParameter("@val1", movie.Title), 
       new SqlParameter("@val2", movie.ReleaseYear), 
       new SqlParameter("@val3", movie.Plot), 
       new SqlParameter("@val4", movie.MovieLength), 
       new SqlParameter("@val5", "Ranjit Menon"), 

       new SqlParameter 
       { 
        ParameterName = "@retVal", 
        SqlDbType = SqlDbType.Int, 
        Direction = ParameterDirection.Output, 
        Value = -1 
       } 
     }; 

    await _mrdbContext.Database.ExecuteSqlCommandAsync("EXEC @retVal = dbo.spInsertMovie @val1, @val2, @val3, @val4,@val5", CancellationToken.None , parameters); 
}

存儲過程：

CREATE PROCEDURE [dbo].[spInsertMovie] 
    (@Title varchar(50), 
    @ReleaseYear int, 
    @Plot varchar(50), 
    @MovieLength int, 
    @CreatedBy varchar(20) 
    ) 
AS 
BEGIN 
    set nocount on 

    ---------------------------------------- 
    -- variables 
    ---------------------------------------- 

    -- error 
    declare @ErrorMessage nvarchar(2048), @ErrorSeverity int, @ErrorState int, @MovieID int 

    ---------------------------------------- 
    -- insert record 
    ---------------------------------------- 

    begin try 


     -- insert record 
      insert into [dbo].[Movies] 
         ([Title] 
         ,[ReleaseYear] 
         ,[Plot] 
         ,[MovieLength]      
         ,[CreatedBy]      
         ,[UpdatedBy]) 
      values 
         (@Title 
         ,@ReleaseYear 
         ,@Plot 
         ,@MovieLength      
         ,@CreatedBy 
         ,@CreatedBy) 


     -- get assigned id 
     set @MovieID = scope_identity() 



    end try 
    begin catch 
     select @ErrorMessage = dbo.fnGetErrorMessage('Insert Movie Record', error_message(), object_schema_name(@@procid), object_name(@@procid), error_line()), @ErrorSeverity = error_severity(), @ErrorState = error_state(); 
     raiserror(@ErrorMessage, @ErrorSeverity, @ErrorState); 
     return 
    end catch 

    -- return assigned id 
    select @MovieID as MovieID 

END

來源

2017-05-30 Tom

ExecuteSqlCommand最有可能返回一個int，而不是一個任務。改爲使用ExecuteSqlCommandAsync。 https://msdn.microsoft.com/en-us/library/system.data.entity.database.executesqlcommandasync(v=vs.113).aspx

來源

2017-05-30 06:38:38 Andrew

我剛剛根據您的建議添加了新的存儲庫方法。但是我沒有看到該過程被調用。我打開了我的分析器來捕獲通話。我已通過傳遞相同的參數值在後端測試了存儲過程，並通過返回新生成的Movie ID正常工作。我還更新了帖子以包含商店程序 – Tom

@Tom是否會拋出異常或以任何方式失敗？ – Andrew

嗨安德魯，我看到沒有例外拋出，這使我很難理解爲什麼它不工作。 – Tom

int不包含Getawaiter + asp.net核心web api異步定義

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