Question

我想要做的是当用户点击链接时，点击次数会增加1但是我没有做到=（

输出

无法找到存储过程'updateMovieClicks'如何在分享中获胜？'，'64'

我的存储过程

ALTER PROCEDURE updateMovieClicks
(
@movieTitle varchar(50),
@movieClicks int
)
AS
update MovieListTable set movieClicks=@movieClicks where movieTitle=@movieTitle;

我的程序代码在页面加载

conn.Open();
SqlCommand cmdIncreaseMovieClicks = new SqlCommand("updateMovieClicks'" +
    Session["videoName"].ToString() + "','" + clicksIncrease + "'", conn);
SqlParameter movieTitle = new SqlParameter();
SqlParameter movieClicks = new SqlParameter();
cmdIncreaseMovieClicks.CommandType = CommandType.StoredProcedure;
cmdIncreaseMovieClicks.Parameters.Add("@movieClick", SqlDbType.Int).Value 
= clicksIncrease+1;
cmdIncreaseMovieClicks.ExecuteNonQuery();
conn.Close();

Answer 1

您的错误正在发生，因为系统认为您正在尝试查找名为'updateMovieClicks'How to win in share?','64'的存储过程。这是因为您已将字符串中的参数与存储过程名称连接在一起。

当指定命令类型为StoredProcedure时，则将参数单独添加到命令文本中。因此，只有存储过程名称包含在命令文本中，并且参数作为单独的对象添加到SqlCommand。

ALTER PROCEDURE updateMovieClicks
(
@movieTitle varchar(50)
)
AS
update MovieListTable set movieClicks=(movieClicks+1) where movieTitle=@movieTitle;


SqlCommand cmdIncreaseMovieClicks = new SqlCommand("updateMovieClicks", conn);
cmdIncreaseMovieClicks.CommandType = CommandType.StoredProcedure;
cmdIncreaseMovieClicks.Parameters.Add("@movieTitle", SqlDbType.nvarchar).Value 
= session["videoName"].tostring();
conn.Open();
cmdIncreaseMovieClicks.ExecuteNonQuery();
conn.Close();

这里我还改进了您的存储过程查询，以便在SQL级别计算movieClicks。

Answer 2

您只需要在SqlCommand的构造函数中指定存储的proc名称。

var cmd = new SqlCommand("updateMovieClicks",conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@movieTitle", Session["videoName"].ToString() );
cmd.Parameters.AddWithValue("@movieClicks", int.Parse(clicksIncrease));

无法在更新时找到存储过程

2 个答案: