如何在C#中显示SQL"PRINT"命令的输出？

Question

我有一个总是返回"PRINT"命令的SQL过程,我想提取这个"PRINT"命令的输出,即C#中的过程我该怎么做？这是程序

ALTER PROC ResultsPoll
@pollid INT 
AS
DECLARE @count1 INT 
DECLARE @count2 INT 
DECLARE @count3 INT 
DECLARE @count4 INT 
DECLARE @count5 INT 
DECLARE @test VARCHAR(MAX)
DECLARE @value VARCHAR(MAX)
SELECT @count1 = COUNT(mem_id) FROM Students_answer_Polls INNER JOIN Polls ON Polls.poll_id = Students_answer_Polls.poll_id
WHERE Students_answer_Polls.poll_id = @pollid AND Students_answer_Polls.answer = Polls.a1
SELECT @count2 = COUNT(mem_id) FROM Students_answer_Polls INNER JOIN Polls ON Polls.poll_id = Students_answer_Polls.poll_id
WHERE Students_answer_Polls.poll_id = @pollid AND Students_answer_Polls.answer = Polls.a2
SELECT @count3 = COUNT(mem_id) FROM Students_answer_Polls INNER JOIN Polls ON Polls.poll_id = Students_answer_Polls.poll_id
WHERE Students_answer_Polls.poll_id = @pollid AND Students_answer_Polls.answer = Polls.a3
SELECT @count4 = COUNT(mem_id) FROM Students_answer_Polls INNER JOIN Polls ON Polls.poll_id = Students_answer_Polls.poll_id
WHERE Students_answer_Polls.poll_id = @pollid AND Students_answer_Polls.answer = Polls.a4
SELECT @count5 = COUNT(mem_id) FROM Students_answer_Polls INNER JOIN Polls ON Polls.poll_id = Students_answer_Polls.poll_id
WHERE Students_answer_Polls.poll_id = @pollid AND Students_answer_Polls.answer = Polls.a5

SELECT @test=Polls.a1 FROM Polls WHERE poll_id = @pollid
IF(@test IS NOT NULL)
BEGIN
PRINT ('Number of students who chose '+@test+' is:'+' '+CAST (@count1 AS VARCHAR(MAX)))
END
SELECT @test=Polls.a2 FROM Polls WHERE poll_id = @pollid
IF(@test IS NOT NULL)
BEGIN
PRINT ('Number of students who chose '+@test+' is:'+' '+CAST (@count2 AS VARCHAR(MAX)))
END
SELECT @test=Polls.a3 FROM Polls WHERE poll_id = @pollid
IF(@test IS NOT NULL)
BEGIN
PRINT ('Number of students who chose '+@test+' is:'+' '+CAST (@count3 AS VARCHAR(MAX)))
END
SELECT @test=Polls.a4 FROM Polls WHERE poll_id = @pollid
IF(@test IS NOT NULL)
BEGIN
PRINT ('Number of students who chose '+@test+' is:'+' '+CAST (@count4 AS VARCHAR(MAX)))
END
SELECT @test=Polls.a5 FROM Polls WHERE poll_id = @pollid
IF(@test IS NOT NULL)
BEGIN
PRINT ('Number of students who chose '+@test+' is:'+' '+CAST (@count5 AS VARCHAR(MAX)))
END

Answer 1

您需要订阅SqlConnection.InfoMessage活动.

MSDN 在这里有一些示例代码.