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Article #16969: Testing if you are connected to the internet

 Question and Answer Database
FAQ1969D.txt — Testing if you are connected to the internet
Category :Internet/WEB
Platform :All-32Bit
Product :
Question:
How can I tell at runtime if I am connected to the internet?
Answer:
You can use the TCP component to retrieve the Local IP
address. If it is "0.0.0.0" then there is no connection.
Example:
procedure TForm1.Button1Click(Sender: TObject);
begin
if TCP1.LocalIp = '0.0.0.0' then
ShowMessage('Your not connected!');
end;
4/2/99 11:47:13 AM

Last Modified: 01-SEP-99