How to implement stored procedure in C #
This article will explain in detail how to implement stored procedures in C#. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.
C # stored procedure source code
Public static int VerifyUser (clsUser user)
{
Int iRet
String sql = String.Format ("EXECUTE VerifyUser @ myVerifyReader OUTPUT"
'{0}','{1}'", user.username,user.password)
/ / T-SQL string executed
SqlCommand scmd = new SqlCommand (sql, conn)
Scmd.Parameters.Add (new SqlParameter ("@ myVerifyReader", SqlDbType.Int))
Scmd.Parameters ["@ myVerifyReader"] .Direction = ParameterDirection.Output
/ /
DBOpen (conn)
/ / there is a problem with the return value
Scmd.ExecuteNonQuery ()
IRet = (int) scmd.Parameters ["@ myVerifyReader"] .Value
DBClose (conn)
Return iRet
}
SQL SERVER stored procedure
CREATE PROCEDURE VerifyUser
(
@ myVerifyReader int OUTPUT,-- returns the result
@ username varchar (50)-- user name
@ userpassword varchar (50)-user password
)
AS
IF EXISTS (SELECT [id] FROM [Users] WHERE username =
@ username AND userpassword = @ userpassword)
SET @ myVerifyReader = 0-- verified
ELSE IF EXISTS (SELECT [id] FROM [Users] WHERE username = @ username)
SET @ myVerifyReader = 1-user exists and the password is incorrect
ELSE
SET @ myVerifyReader = 2-- user does not exist
RETURN isnull (@ myVerifyReader,3)
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