Mega Code Archive
Command NonQuery
<![CDATA[
using System;
using System.Data;
using System.Data.SqlClient;
class CommandNonQuery
{
static void Main()
{
SqlConnection conn = new SqlConnection(@"server = .\sqlexpress;integrated security = true;database = northwind");
string sqlqry = @"select count(*) from employees";
string sqlins = @"insert into employees(firstname,lastname)values('Z', 'Z')";
string sqldel = @"delete from employees 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.");
}
}
}
]]>