如何更新逻辑以检查SQL查询状态，并基于c#中的返回true/false？

我不熟悉C#和SQL。 我的端点代码如下所示：

 public IActionResult EndSession([Required(ErrorMessage = "Session Id is required.")]string sessionId)
    {
        DateTime startTime = DateTime.Now;
        try
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Attempting to delete user session.");
            logger.LogInfo(logText);

           EndUserSession(sessionId);

            logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
            logger.LogInfo(logText);

            return Ok(true);
        }
        catch (Exception ex)
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", ex.ToString());

            logger.LogError(logText, ex);

            return StatusCode(Constants.InternalServerErrorCode, "Failed! Unable to delete user session. Please check logs for more details.");
        }
    }

public void EndUserSession(string sessionId)
    {
        using (SqlConnection connection = new SqlConnection(DataSourceHelper.ConnectionString))
        {
            try
            {
                using (SqlCommand command = new SqlCommand("EndUserSession", connection))
                {
                    command.CommandType = CommandType.StoredProcedure;
                    command.CommandTimeout = Constants.SQL_COMMAND_TIMEOUT;

                    command.Parameters.AddWithValue("@SessionId", sessionId);
                    command.Parameters.AddWithValue("@SessionEndTime", DateTime.Now);

                    connection.Open();
                    command.ExecuteNonQuery();                    

                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }

var testSession = EndUserSession(sessionId);

            if(testSession == true) 
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
                logger.LogInfo(logText);

                return Ok(true);
            }
            else
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "SessionId not found, please try again.");
                logger.LogInfo(logText);

                return BadRequest(false);
            }

我的数据访问层代码如下：

 public IActionResult EndSession([Required(ErrorMessage = "Session Id is required.")]string sessionId)
    {
        DateTime startTime = DateTime.Now;
        try
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Attempting to delete user session.");
            logger.LogInfo(logText);

           EndUserSession(sessionId);

            logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
            logger.LogInfo(logText);

            return Ok(true);
        }
        catch (Exception ex)
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", ex.ToString());

            logger.LogError(logText, ex);

            return StatusCode(Constants.InternalServerErrorCode, "Failed! Unable to delete user session. Please check logs for more details.");
        }
    }

public void EndUserSession(string sessionId)
    {
        using (SqlConnection connection = new SqlConnection(DataSourceHelper.ConnectionString))
        {
            try
            {
                using (SqlCommand command = new SqlCommand("EndUserSession", connection))
                {
                    command.CommandType = CommandType.StoredProcedure;
                    command.CommandTimeout = Constants.SQL_COMMAND_TIMEOUT;

                    command.Parameters.AddWithValue("@SessionId", sessionId);
                    command.Parameters.AddWithValue("@SessionEndTime", DateTime.Now);

                    connection.Open();
                    command.ExecuteNonQuery();                    

                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }

var testSession = EndUserSession(sessionId);

            if(testSession == true) 
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
                logger.LogInfo(logText);

                return Ok(true);
            }
            else
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "SessionId not found, please try again.");
                logger.LogInfo(logText);

                return BadRequest(false);
            }

存储过程：

IF OBJECT_ID('[dbo].[EndUserSession]') IS NOT NULL
DROP PROCEDURE [dbo].[EndUserSession]
GO
CREATE PROCEDURE [dbo].[EndUserSession]
@SessionId nvarchar(36),
@SessionEndTime datetime
WITH ENCRYPTION
AS
BEGIN
UPDATE [dbo].[USER_SESSION] 
SET SESSION_END_DATETIME = @SessionEndTime
WHERE USER_SESSION_IID = @SessionId
END
GO

当数据库中不存在给定的sessionId时，应用程序停止并立即捕获错误，并从我调用此函数的端点抛出500个内部服务器错误代码

我要做的是更新逻辑，以便检查SQL查询状态，并根据EndUserSession函数返回的true/false，以及在出现故障或在User_会话表中找不到会话Id时记录的结果。实现这一点的最佳方法是什么？

ExecuteOnQuery（）返回受INSERT、UPDATE或DELETE语句影响的行数。因此，我将函数更改为return bool，并在数据访问中添加了以下逻辑：

int a = command.ExecuteNonQuery();

                    if (a == 0)
                    {
                        return false;
                    }
                    else
                    {
                        return true;
                    }

在我的端点中，我添加了一个if语句，如果函数返回true，它将返回一个200；如果它返回false，它将返回一个400错误的请求日志，说明找不到sessionId，因此没有更新任何内容。 情况如下：

 public IActionResult EndSession([Required(ErrorMessage = "Session Id is required.")]string sessionId)
    {
        DateTime startTime = DateTime.Now;
        try
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Attempting to delete user session.");
            logger.LogInfo(logText);

           EndUserSession(sessionId);

            logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
            logger.LogInfo(logText);

            return Ok(true);
        }
        catch (Exception ex)
        {
            string logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", ex.ToString());

            logger.LogError(logText, ex);

            return StatusCode(Constants.InternalServerErrorCode, "Failed! Unable to delete user session. Please check logs for more details.");
        }
    }

public void EndUserSession(string sessionId)
    {
        using (SqlConnection connection = new SqlConnection(DataSourceHelper.ConnectionString))
        {
            try
            {
                using (SqlCommand command = new SqlCommand("EndUserSession", connection))
                {
                    command.CommandType = CommandType.StoredProcedure;
                    command.CommandTimeout = Constants.SQL_COMMAND_TIMEOUT;

                    command.Parameters.AddWithValue("@SessionId", sessionId);
                    command.Parameters.AddWithValue("@SessionEndTime", DateTime.Now);

                    connection.Open();
                    command.ExecuteNonQuery();                    

                }
            }
            catch (Exception)
            {
                throw;
            }
        }
    }

var testSession = EndUserSession(sessionId);

            if(testSession == true) 
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "Successfully deleted user session.");
                logger.LogInfo(logText);

                return Ok(true);
            }
            else
            {
                logText = LogFormatter.Format(
                                WebUtilities.GetUser((ClaimsIdentity)HttpContext.User.Identity),
                                startTime, DateTime.Now, Privilege.ViewIMUData,
                                "End Session", "SessionId not found, please try again.");
                logger.LogInfo(logText);

                return BadRequest(false);
            }

---

你能分享一下存储过程的代码吗？@MartinStaufcik I添加了存储过程。存储过程要么更新行，要么不更新行，看起来没问题。您在catch块中捕获了什么异常？您可以尝试添加

catch（Exception ex）

而不是

catch（Exception）

以查看异常详细信息。