uses  UDBini
{------------------------------}
var demo :  TDBini;
{------------------------------}
//ini file

test:=TDBINI.create('F:\RAD_ESTUDIO10.2\dbini\example.ini');
test.forEach( procedure(id:string ) begin
    example.get(id,'field1');
    ListView1.items.AddItem.Text:= id +        test.get(id,'field1');;
 end );
 //for delete
test.delete('section_name');
//for add

test.add('unique_section','key','value');
test.add('unique_section','bytestream',StreamString.create('áéíóú'));

//for save in file

test.save

There are many situation when it would handy to know the IP address of a device where our app is running. Maybe you want to identify who is running your app? By IP address it is also possible to calculate the approximate location of a device. If you connect to Internet through a router, there are big chances that it implements "Network Address Translation" (NAT), to make it harder for remote machines to establish a direct connection to a machine within a local network.