Call a sql server stored procedure when submit button is clicked In asp.net

Question 1

Write a stored procedure with your select statement:

select * from Log_Users where UserName =@username and Password=@password

and alter your ADO.net code to consume this Stored procedure as,

 SqlCommand cmd = new SqlCommand("your sp name", con);

 cmd.CommandTpe = CommandType.StoredProcedure;

Question 2

You can use stored procedure based command text instead of using normal command text; Firstly create a storedproedure with out parameter(as well as in parameters): In Parameters are to check the username and password against the table and Out Parameter is to return whether user is a valid one or not after checking against the database.

So, make use of

cmd.CommandText="StoredProcedureName";
cmd.CommandType=CommandType.StoredProcedure;

And Use out and in parameters; And after getting the out parameter value, you can redirect to the details/error page according to the credentials provided by the user.. :)

Question 3

Instead of the query that you are passing to command object in the below line-Pass the stored procedure name. It should be in the Button click event. You have written teh code at the right place.

    SqlCommand cmd = new SqlCommand("StoredProcedureName", con);

   cmd.CommandType=CommandType.StoredProcedure;

  cmd.ExecuteReader()

I hope this helps

Question 4

the following is the complete solution u r looking for,

the stored procedure:

use [YOURDB]

go

IF EXISTS (SELECT * FROM sysobjects WHERE type = 'P' AND name = 'sp_Login') BEGIN DROP Procedure [dbo].[sp_Login] END

SET ANSI_NULLS ON SET QUOTED_IDENTIFIER ON GO

/* File Name : sp_Login.sql Description : Author : Vinay.T Date : */

CREATE Procedure [dbo].[sp_Login] ( @Username VarChar(50) ,@UPassword varChar(50) ,@OutRes int output

) AS

BEGIN SET NOCOUNT ON

DECLARE @ErrMsg NVARCHAR(510) -- ,@ErrorSeverity INT --16 if business error BEGIN

SET @OutRes = (SELECT count(*) FROM Log_Users WHERE Username = @Username And [Password] = @UPassword)

END GOTO SUCCESS

SUCCESS: RETURN 1 CRASH: RAISERROR (@ErrMsg, @ErrorSeverity, 1) WITH NOWAIT END GO GRANT EXEC ON [dbo].[sp_Login] TO PUBLIC

GO

2:the button click event code:

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["dbconnection"].ConnectionString);
        con.Open();
        SqlCommand cmd = new SqlCommand("sp_Login", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@Username", txtUserName.Text);
        cmd.Parameters.AddWithValue("@UPassword", txtPWD.Text);
        cmd.Parameters.Add("@OutRes", SqlDbType.Int).Direction = ParameterDirection.Output;
        cmd.ExecuteNonQuery();

        int output = (int)cmd.Parameters["@OutRes"].Value;
        if (output == 1)
        {
            Response.Redirect("Details.aspx");
        }
        else
        {
            ClientScript.RegisterStartupScript(Page.GetType(), "validation", "<script language='javascript'>alert('Invalid Username Or Password')</script>");
        }

let me know this works on not.. ? run the sp against your database..

Question 5

As you asked for the stored procedure.. below is the one with OUTPUT parameter ..

IF EXISTS (SELECT * FROM sysobjects WHERE type = 'P' AND name = 'proc_name')
BEGIN
DROP Procedure [dbo].[proc_name]
END

SET ANSI_NULLS ON
SET QUOTED_IDENTIFIER ON
GO


/*
File Name : proc_name.sql
Description : 
Author : Vinay.T
Date :
*/

CREATE Procedure [dbo].[proc_name]
(
     @Username VarChar(50)
    ,@UPassword varChar(50)
    ,@OutRes int OUTPUT 
)
AS

BEGIN
SET NOCOUNT ON

DECLARE @ErrMsg NVARCHAR(510) --
        ,@ErrorSeverity INT --16 if business error
BEGIN

SET @OutRes = (SELECT count(*) FROM [dbo].Log_Users WHERE Username = @Username And [Password] = @UPassword)


END
GOTO SUCCESS

SUCCESS:
RETURN 1
CRASH:
RAISERROR (@ErrMsg, @ErrorSeverity, 1) WITH NOWAIT
END
GO
GRANT EXEC ON [dbo].[proc_name] TO PUBLIC

GO

============================================

execute the above sp and use the DataReader to fetch the Output parameter as suggested in the previous answer...