Send an alert to a pda device from a .NET web application

[Guest]

Hi all,

What I want to do:

Send an alert to a pda device from a .NET web application. So user creates a
message in web application and selects mobile device to send to (via IP or
whichever method is possible), clicks send and the PDA receives an alert. A
work around I was pondering was to have the data inserted into a database and
then the device application checks this regularly to see if there is any data
flagged for the device. This constant checking would consume a lot of memory
however hence why I would like to write some code that automatically triggers
the PDA to acknoledge receiving some data.



I understand that email would achieve the same effect but I want to
integrate this into an exisitng app as well as other reasons.



I hope this is clear and thanks for your time

Greg

 

[Alex Feinman [MVP]]

It depends on how the PDA is connected to the world.
A regular Pocket PC with a Wi-Fi connection has reachable IP address, so you
can employ a TcpListener or other sockect variation. An alternative is MSMQ

On a sometimes-connected device such as Pocket PC Phone Edition, there is no
public IP address (well, almost never) and so you will need to poll some
sort of web service (or establish a socket connection and keep it open). To
avoid havoing constantly poll the server you can send an SMS message to the
device telling it that there is pending data for it