C# 输出参数始终返回0
任何人都可以看一下,看看他们是否能找到为什么我的输出参数总是返回0 这很可能很简单,我就是看不见 -----------------------SP----------------------------C# 输出参数始终返回0,c#,c#-4.0,C#,C# 4.0,任何人都可以看一下,看看他们是否能找到为什么我的输出参数总是返回0 这很可能很简单,我就是看不见 -----------------------SP---------------------------- ALTER PROCEDURE [dbo].[test] -- Add the parameters for the stored procedure here @SearchPhrase VarChar(100), @RecordsFound INT OUTPUT
ALTER PROCEDURE [dbo].[test]
-- Add the parameters for the stored procedure here
@SearchPhrase VarChar(100),
@RecordsFound INT OUTPUT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT
loads of stuff from table
set @RecordsFound = @@ROWCOUNT;
END
using (SqlConnection cn = new SqlConnection(dbConn))
{
using (SqlCommand cmd = new SqlCommand(spName, cn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@SearchPhrase", SqlDbType.VarChar, 100));
cmd.Parameters["@SearchPhrase"].Value = id;
cmd.Parameters.Add(new SqlParameter("@RecordsFound", SqlDbType.Int));
cmd.Parameters["@RecordsFound"].Direction = ParameterDirection.Output;
List<News> Data = new List<News>();
try
{
cn.Open();
using (SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.Default))
{
if (rdr.HasRows)
{
while (rdr.Read())
{
Data.Add(new News
{
strNewsTitle = (string)rdr["NewsTitle"],
strNewsDatePosted = (string)rdr["NewsDatePosted"],
strNewsDescription = (string)rdr["NewsDescription"],
strLocationOfImageURL = (string)rdr["ImageURL"],
recordsReturned = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value)
});
int recordsReturned1 = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value);
}
int recordsReturned2 = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value);
}
return Data;
------------------C#代码-------------------------
ALTER PROCEDURE [dbo].[test]
-- Add the parameters for the stored procedure here
@SearchPhrase VarChar(100),
@RecordsFound INT OUTPUT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT
loads of stuff from table
set @RecordsFound = @@ROWCOUNT;
END
using (SqlConnection cn = new SqlConnection(dbConn))
{
using (SqlCommand cmd = new SqlCommand(spName, cn))
{
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@SearchPhrase", SqlDbType.VarChar, 100));
cmd.Parameters["@SearchPhrase"].Value = id;
cmd.Parameters.Add(new SqlParameter("@RecordsFound", SqlDbType.Int));
cmd.Parameters["@RecordsFound"].Direction = ParameterDirection.Output;
List<News> Data = new List<News>();
try
{
cn.Open();
using (SqlDataReader rdr = cmd.ExecuteReader(CommandBehavior.Default))
{
if (rdr.HasRows)
{
while (rdr.Read())
{
Data.Add(new News
{
strNewsTitle = (string)rdr["NewsTitle"],
strNewsDatePosted = (string)rdr["NewsDatePosted"],
strNewsDescription = (string)rdr["NewsDescription"],
strLocationOfImageURL = (string)rdr["ImageURL"],
recordsReturned = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value)
});
int recordsReturned1 = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value);
}
int recordsReturned2 = Convert.ToInt32(cmd.Parameters["@RecordsFound"].Value);
}
return Data;
使用(SqlConnection cn=newsqlconnection(dbConn))
{
使用(SqlCommand cmd=newsqlcommand(spName,cn))
{
cmd.CommandType=CommandType.storedProcess;
Add(新的SqlParameter(“@SearchPhrase”,SqlDbType.VarChar,100));
cmd.Parameters[“@SearchPhrase”].Value=id;
Add(新的SqlParameter(“@RecordsFound”,SqlDbType.Int));
cmd.Parameters[“@RecordsFound”].Direction=ParameterDirection.Output;
列表数据=新列表();
尝试
{
cn.Open();
使用(SqlDataReader rdr=cmd.ExecuteReader(CommandBehavior.Default))
{
if(rdr.HasRows)
{
while(rdr.Read())
{
Data.Add(新新闻)
{
strNewsTitle=(字符串)rdr[“新闻标题”],
strNewsDatePosted=(字符串)rdr[“NewsDatePosted”],
strNewsDescription=(字符串)rdr[“NewsDescription”],
strLocationOfImageURL=(字符串)rdr[“ImageURL”],
RecordsReturn=Convert.ToInt32(cmd.Parameters[“@RecordsFound”].Value)
});
int recordsReturned1=Convert.ToInt32(cmd.Parameters[“@RecordsFound”].Value);
}
int recordsReturned2=Convert.ToInt32(cmd.Parameters[“@RecordsFound”].Value);
}
返回数据;
在测试存储过程时,我可以看到@RecordsFound确实返回了一个值,所以我认为问题在于我的代码
谢谢
乔治
未启用行计数,因此默认为0
未启用行计数,因此默认为0。
如果命令包含输出参数或返回值,它们将
在关闭DataReader之前,此选项不可用
如果命令包含输出参数或返回值,它们将
在关闭DataReader之前,此选项不可用
或者您是对的或在MSDN上是错的
即使在“设置无计数”处于启用状态时,@@ROWCOUNT函数也会更新。
Hi-flem,删除后仍返回0,我已将@RecordsFound放在3个位置,全部返回0;或者您是对的或在MSDN上是错的即使在“设置无计数”处于启用状态时,@@ROWCOUNT函数也会更新。
Hi-flem,删除后仍返回0骨灰盒0,我已将@RecordsFound放在3个位置,全部返回0