ASP.NET

SqlConnection connection = new SqlConnection( "ConnectionString" );
SqlCommand cmd = new SqlCommand( "CommandText", connection );
try {
    connection.Open();
    cmd.ExecuteNoneQuery();
}
catch {
    // do something
}

try {
    
    try {
        connection.Open();
    } catch {
        // do something
    }

    try {
         cmd.ExecuteNoneQuery();
    } catch {
        // do something
    }

}
catch {
    // do something
}

<div id='divGrid'><br />
<asp:DataGrid....<br />
</div><br />
<br />
<input type='button' onclick.='doPrint();'>

function doPrint()<br />
{<br />
    var subwin = window.open("_blank");  // you can open an existing page<br />
    var d = document.getElementById("divGrid");<br />
    subwin.document.write(d.innerHTML);<br />
    subwin.print();<br />
}