Ping ----> Slow!!!

I have just completed a Pinging project, but i found that when the application is pinging, my computer will be really sluggish...

If i try to ping 100 times in one click, it won't let me stop it even i click X button for 100 times!! !!!!

I know this is not a error, anyone knows how to aviod this problem? pinging without any delay??



a novice

Try pinging only a few times...... ie 5-10. 100 is far too many anyway.
I have found that VB doesn't like large or two many nested loops - mine often crashes if I try to loop over about 50 times... maybe its a memory problem?

Chief

"Dammit Smithers, this is brain surgery not rocket science!! Now hand me that ice cream scoop..."

Try not sending out the next ping until you receive the response from
the first ping. Also, you should have a pause and only do a limited
number. Otherwise, you are flood pinging - a bad thing.

I think therefore I am... sometimes right. images/icons/wink.gif

If you put a doevents within your loop, you *might* be able to cancel the loop, depending on how you've coded it.

For instance:

dim bDone as boolean 'module level or global variable

....
'code in some sub routine...
bDone = false
for i = 1 to 50
ping
doevents
if bDone then exit for
next i

....

sub cmdCancelButton_Click()
bDone = true
end sub

In the for-next loop, you check the value of the bDone flag to see if the user pressed the cancel button. The DoEvents is there to give the program a chance to respond to the click event.



"I have a plan so cunning you could put a tail on it and call it a weasel!" - Edmund Blackadder

Ping --- sends 32byte data from a computer to another.

i think, It should be same as Scanning a IP. Why people can

make programs which can scan over 200 ports in one minute

without any delay?

What are the differeneces between ping and scan? anyone can tell me ? I am very interested in winsock.ocx, i would like to know more about it! Thank you all!



a novice <P ID="edit"><FONT class="small"><EM>Edited by boy... on 09/07/01 07:41 AM.</EM></FONT></P>

If you want Winsock help, go to the Communications Help (http://www.visualbasicforum.com/bbs/postlist.php?Cat=&Board=Comm) board. Actually, a mod/admin should probably move "ping" questions there too.

Regards,
-<font color=purple>The Hand</font color=purple>

<font color=green>All your code are belong to us...</font color=green> images/icons/tongue.gif