Parameterized Queries Without Stored Procedures In ASP.NET

 

Why Use Parameterized Queries?

Parameterized queries help prevent SQL injection, making them a secure way to interact with a database. While stored procedures are highly recommended for their security benefits and performance advantages, they also come with some practical limitations.

Disadvantages of Using Stored Procedures in SQL Server

1. Requires SQL Server Management Studio (SSMS) – Creating or editing stored procedures requires access to SSMS, which is not always convenient.
2. IP Binding Restrictions – Many hosting providers require IP whitelisting before allowing access to SQL Server via SSMS. This can be problematic if you are using mobile data, as mobile IP addresses frequently change.
3. Hosting Provider IP Restrictions – Some hosting providers restrict access to SQL Server by allowing only specific IP ranges, requiring manual approval. This adds extra delays and dependency on hosting support.
4. Deployment Complexity – Using stored procedures requires uploading both the DLL file (for your application) and the stored procedure in SQL Server. Without stored procedures, you only need to upload the DLL file, simplifying deployment and saving time.

Alternative Approach: Using Parameterized Queries Without Stored Procedures

Instead of relying on SSMS, you can use C# to create and execute parameterized queries directly within your application.

Here’s an example of how to implement a parameterized query in C# without using a stored procedure:

public bool UpdateTestimonial(TestimonialModel data, ref string ErrMsg)

        {

            String result = "0",sql="";

            try

            {

                using (SqlConnection dbcon = new SqlConnection(ConfigurationManager.ConnectionStrings["dbConnection"].ToString()))

                {

                    sql = "update Testimonial set Name=@nm,Profession=@prof,Star=@star,Message=@msg  where id=@ID";

                    using (SqlCommand cmd = new SqlCommand(sql, dbcon))

                    {

                        cmd.Parameters.Add(new SqlParameter("@nm", SqlDbType.VarChar, 25) { Value = data.Name } );

                        cmd.Parameters.Add(new SqlParameter("@prof", SqlDbType.VarChar, 25) { Value = data.Profession });

                        cmd.Parameters.Add(new SqlParameter("@star", SqlDbType.Int) { Value = data.Star }) ;

                        cmd.Parameters.Add(new SqlParameter("@msg", SqlDbType.VarChar, 500) { Value = data.Message });

                        cmd.Parameters.Add(new SqlParameter("@ID", SqlDbType.Int) { Value = Convert.ToInt32(data.ID) });

                        if (dbcon.State == ConnectionState.Closed)

                            dbcon.Open();

                        cmd.ExecuteNonQuery();

                     

                            result = "1";

                      

                    }

                }

            }

            catch (Exception ex)

            {

                ErrMsg = ex.Message;

            }

            if (result == "1")

                return true;

            else

                return false;

        }

    }

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