string commandGetIslemIdleri = ("EXEC GetIslemIdleri");
cmd = new SqlCommand(commandGetIslemIdleri, sqlConn);
cmd.Parameters.Add(new SqlParameter("@CARIID", 110));
using (var reader = cmd.ExecuteReader()) //error occurs here
{
while (reader.Read())
{
islemidleri.Add(reader.GetInt32(0));
}
}
以上是我试图编写的代码,该代码使用整数CARIID
来调用以下存储过程。当我运行代码时,发生错误并显示"Procedure or function 'GetIslemIdleri' expects parameter '@CARIID', which was not supplied."
但是据我从here中读取的示例所了解的那样,我正在使用此代码cmd.Parameters.Add(new SqlParameter("@CARIID", 110));
发送参数,我需要帮助,在此先感谢您。
ALTER PROCEDURE [dbo].[GetIslemIdleri]
@CARIID int
AS
BEGIN
SET NOCOUNT ON;
SELECT ID
FROM TBLP1ISLEM
WHERE TBLP1ISLEM.CARI_ID=@CARIID
END
如果要使用SqlCommand调用存储过程,请不要执行EXEC GetIslemIdleri
,仅执行GetIslemIdleri
,将CommandType设置为CommandType.StoredProcedure
:
cmd = new SqlCommand("GetIslemIdleri", sqlConn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new SqlParameter("@CARIID", 110));
using (var reader = cmd.ExecuteReader()) //error occurs here
{
while (reader.Read())
{
islemidleri.Add(reader.GetInt32(0));
}
}
您忘了添加程序名称:
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "GetIslemIdleri";
cmd.Parameters.Add("@CARIID", SqlDBType.Int).Value = 110;
并且执行以下步骤:
CREATE PROCEDURE [dbo].[GetIslemIdleri]
(
@CARIID int
)
AS
BEGIN
SET NOCOUNT ON;
SELECT ID FROM TBLP1ISLEM WHERE TBLP1ISLEM.CARI_ID = @CARIID
END
这必须起作用。
您需要确保将SqlCommand设置为CommandType.StoredProcedure。
cmd.CommandType = CommandType.StoredProcedure
设置参数有些不同:
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@CARIID", SqlDBType.Int).Value = 110;
您不太正确地调用存储过程。您只需要传递存储过程的名称(不带exec),将命令类型设置为存储过程,然后添加参数:
var command = new SqlCommand("GetIslemIdleri", conn);
command.CommandType = CommandType.StoredProcedure;
command.Parameters.Add(new SqlParameter("@CARIID", 110));