ASP.NET Stored Procedures

A stored procedure is a group of Transact-SQL statements compiled into a single execution plan. You can write stored procedure and save it into the database. If you are in a situation to using the same query over and over again, it is better to create a stored procedure instead. A sample Stored Procedure is given below :


The above code create a procedure named as 'SPAUTHORS' and it execute SQL statement that select all authors last name from authors table from the PUB database. Coding business logic into a single stored procedure offers a single point of control for ensuring that business rules are correctly enforced and improve performance.

Stored procedures can also shield users from needing to know the details of the tables in the database, users unable to access the tables directly and they can just execute the stored procedures only. The command Object in ADO.NET provides a number of Execute methods that can be used to perform the SQL queries in a variety of fashions.

To call a stored procedure from ASP.NET , set the CommandType of the Command object to Stored Procedure.

command.CommandType = CommandType.StoredProcedure;

From the following source code you can see how to call a stored procedure from an ASP.NET application.


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""> <html xmlns=""> <head id="Head1" runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" /> <br /> <asp:ListBox ID="ListBox1" runat="server"></asp:ListBox> <br /> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </div> </form> </body> </html>
Full Source | C#
using System; using System.Data ; using System.Data.SqlClient ; using System.Configuration; public partial class _Default : System.Web.UI.Page { protected void Button1_Click(object sender, EventArgs e) { string connectionString = ConfigurationManager.ConnectionStrings["SQLDbConnection"].ToString(); SqlConnection connection = new SqlConnection(connectionString); SqlCommand command = new SqlCommand(); SqlDataAdapter adapter = new SqlDataAdapter(); DataSet ds = new DataSet(); try { connection.Open(); command.Connection = connection; command.CommandType = CommandType.StoredProcedure; command.CommandText = "SPAUTHORS"; adapter = new SqlDataAdapter(command); adapter.Fill(ds); connection.Close(); ListBox1.DataSource = ds.Tables[0]; ListBox1.DataTextField = "au_lname"; ListBox1.DataBind(); } catch (Exception ex) { Label1.Text = "Error in execution " + ex.ToString(); } } }
Full Source | VB.NET
Imports System.Data Imports System.Data.SqlClient Imports System.Configuration Partial Class _Default Inherits System.Web.UI.Page Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim connectionString As String Dim connection As SqlConnection connectionString = ConfigurationManager.ConnectionStrings("SQLDbConnection").ToString connection = New SqlConnection(connectionString) Dim adapter As SqlDataAdapter Dim command As New SqlCommand Dim ds As New DataSet Try connection.Open() command.Connection = connection command.CommandType = CommandType.StoredProcedure command.CommandText = "SPAUTHORS" adapter = New SqlDataAdapter(command) adapter.Fill(ds) connection.Close() ListBox1.DataSource = ds.Tables(0) ListBox1.DataTextField = "au_lname" ListBox1.DataBind() Catch ex As Exception Label1.Text = "Error in execution " & ex.ToString End Try End Sub End Class

Click the following links to see full source code

C# Source Code
VB.NET Source Code