/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy
Publisher: Sybex;
ISBN: 0782129110
*/
/*
Example23_7.cs illustrates how to call a SQL Server
stored procedure
*/
using System;
using System.Data;
using System.Data.SqlClient;
public class Example23_7
{
public static void Main()
{
// formulate a string containing the details of the
// database connection
string connectionString =
"server=localhost;database=Northwind;uid=sa;pwd=sa";
// create a SqlConnection object to connect to the
// database, passing the connection string to the constructor
SqlConnection mySqlConnection =
new SqlConnection(connectionString);
// formulate a string containing the name of the
// stored procedure
string procedureString =
"Ten Most Expensive Products";
// create a SqlCommand object to hold the SQL statement
SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
// set the CommandText property of the SqlCommand object to
// procedureString
mySqlCommand.CommandText = procedureString;
// set the CommandType property of the SqlCommand object
// to CommandType.StoredProcedure
mySqlCommand.CommandType = CommandType.StoredProcedure;
// open the database connection using the
// Open() method of the SqlConnection object
mySqlConnection.Open();
// run the stored procedure
mySqlCommand.ExecuteNonQuery();
// create a SqlDataAdapter object
SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter();
// set the SelectCommand property of the SqlAdapter object
// to the SqlCommand object
mySqlDataAdapter.SelectCommand = mySqlCommand;
// create a DataSet object to store the results of
// the stored procedure call
DataSet myDataSet = new DataSet();
// use the Fill() method of the SqlDataAdapter object to
// retrieve the rows from the stored procedure call,
// storing the rows in a DataTable named Products
mySqlDataAdapter.Fill(myDataSet, "Products");
// display the rows in the Products DataTable
Console.WriteLine("The ten most expensive products are:");
DataTable products = myDataSet.Tables["Products"];
foreach (DataRow product in products.Rows)
{
Console.WriteLine("Product name = " +
product["TenMostExpensiveProducts"]);
Console.WriteLine("Unit price = " +
product["UnitPrice"]);
}
// close the database connection using the Close() method
// of the SqlConnection object
mySqlConnection.Close();
}
}
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