How to create stored procedure - sql

Question

How to create stored procedure for this c# statement
String Orders = "INSERT INTO Orders VALUES('" + DDLCustomerID.SelectedValue + "','" + Convert.ToInt32(TxtNetPrice.Text) + "');" + " SELECT SCOPE_IDENTITY();";
SqlCommand command = new SqlCommand(Orders, Connection);
command.CommandType = CommandType.Text;
Connection.Open();
int intID = Convert.ToInt32(command.ExecuteScalar());
String Orderdetails1 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct1.SelectedItem + "','" + Convert.ToInt32(TxtPrice1.Text) + "','" + Convert.ToInt32(TxtQuantity1.Text) + "','" + Convert.ToInt32(TxtTotalPrice1.Text) + "')";
SqlCommand Command1 = new SqlCommand(Orderdetails1, Connection);
Command1.CommandType = CommandType.Text;
Command1.ExecuteNonQuery();
String Orderdetails2 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct2.SelectedItem + " ','" + Convert.ToInt32(TxtPrice2.Text) + "','" + Convert.ToInt32(TxtQuantity2.Text) + "','" + Convert.ToInt32(TxtTotalPrice2.Text) + "')";
SqlCommand Command2 = new SqlCommand(Orderdetails2, Connection);
Command2.CommandType = CommandType.Text;
Command2.ExecuteNonQuery();
String Orderdetails3 = "INSERT INTO OrderDetails VALUES(" + intID + ",'" + DDLProduct3.SelectedItem + " ','" + Convert.ToInt32(TxtPrice3.Text) + "','" + Convert.ToInt32(TxtQuantity3.Text) + "','" + Convert.ToInt32(TxtTotalPrice3.Text) + "')";
SqlCommand Command3 = new SqlCommand(Orderdetails3, Connection);
Command3.CommandType = CommandType.Text;
Command3.ExecuteNonQuery();
Response.Write("<script>alert('Successfully Inserted');</script>");
Connection.Close();
How to create stored procedure for this c# statement
The table I created in SQL SERVER is
CREATE TABLE Customers
(
CustomerID INT IDENTITY(1, 1) PRIMARY KEY,
FirstName NVARCHAR(45),
LastName NVARCHAR(45),
Address NVARCHAR(45)
)
CREATE TABLE Orders
(
OrderID INT IDENTITY(1, 1) PRIMARY KEY,
CustomerID INT FOREIGN KEY REFERENCES Customers(CustomerID),
TotalPrice INT
)
CREATE TABLE OrderDetails
(
OrderID INT FOREIGN KEY REFERENCES Orders(OrderID),
ProductName NVARCHAR(45),
Quantity NVARCHAR(45),
Price NVARCHAR(45),
TotalPrice INT
)
I want to create a stored procedure for this statement

Answer 1

This is the SQL code that you need to write :
Syntax for stored procedure :
Create Proc Proc_Name
(
#PARAM1 DATATYPE,
....
)
AS
BEGIN
BODY OF THE SP
END
This is the way to create the stored procedure in SQL.
As you have bunch of queries that you are executing at the single shot.
You also tack care of your transaction.
If suppose your last insert query got EXCEPTION then you above all the queries needs to be rollback & not should be executed.
I have also done rollback in the stored procedure.
CREATE PROC Procedure_Name
(
#Customer_id INT,
#TxtNetPrice FLOAT,
#DDLProduct1 INT,
#TxtQuantity1 FLOAT,
#TxtTotalPrice1 FLOAT,
#TxtPrice1 FLOAT,
#intID INT
)
AS
BEGIN
SET NOCOUNT ON
BEGIN TRY
BEGIN TRANSACTION
INSERT INTO Orders VALUES(#Customer_id,#TxtNetPrice)
DECLARE #S_ID int;
SET #S_ID = (SELECT SCOPE_IDENTITY())
INSERT INTO
OrderDetails
VALUES(#intID,#DDLProduct1,#TxtPrice1,#TxtQuantity1,#TxtTotalPrice1)
COMMIT
END TRY
BEGIN CATCH
DECLARE #ERROR_MSG NVARCHAR(MAX), #SEVERITY INT, #STATE INT
SELECT #SEVERITY = ERROR_SEVERITY(), #STATE = ERROR_STATE()
, #ERROR_MSG = ERROR_MESSAGE() + ' err src line: ' + CAST( ERROR_LINE() AS NVARCHAR(20)) + ' ' + ISNULL(ERROR_PROCEDURE(), '');
--#ERROR_MSG = ERROR_MESSAGE()
ROLLBACK;
-- RE-THROW EXCEPTION FOR DIAGNOSTIC VISIBILITY
RAISERROR (#ERROR_MSG ,#SEVERITY, #STATE);
RETURN
END CATCH
END