Sunday, January 11, 2009

Execute nonquery to delete a record ROW tutorial example

using System;
using System.Data;
using System.Data.SqlClient;

class MainClass
{
static void Main()
{
SqlConnection conn = new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");

string sqlqry = @"select count(*) from employee ";

string sqlins = @"insert into employee (firstname,lastname)values('Z', 'Z')";

string sqldel = @"delete from employee where firstname = 'Z' and lastname = 'Z'";

SqlCommand cmdqry = new SqlCommand(sqlqry, conn);
SqlCommand cmdnon = new SqlCommand(sqlins, conn);

try
{
conn.Open();

Console.WriteLine("Before INSERT: Number of employees {0}\n", cmdqry.ExecuteScalar());

Console.WriteLine("Executing statement {0}", cmdnon.CommandText);
cmdnon.ExecuteNonQuery();
Console.WriteLine("After INSERT: Number of employees {0}\n", cmdqry.ExecuteScalar());

cmdnon.CommandText = sqldel;
Console.WriteLine("Executing statement {0}", cmdnon.CommandText);
cmdnon.ExecuteNonQuery();
Console.WriteLine("After DELETE: Number of employees {0}\n", cmdqry.ExecuteScalar());
}
catch (SqlException ex)
{
Console.WriteLine(ex.ToString());
}
finally
{
conn.Close();
Console.WriteLine("Connection Closed.");
}
}
}

0 comments:

Followers

The Daily Puppy

 
Design by Wordpress Theme | Bloggerized by Free Blogger Templates | JCPenney Coupons