Refresh from server

[gerhard.kimmeringer]

How can i refresh a grid from server.

 

The eventalerter fires when new data inserted, then i like to

refresh the grid on clientside.

 

To close and open and or refresh the dataset in uniguimodule

isn't the problem, only the datagrid dosen't refresh.

[Oliver Morsch]

Do I understand right: You want to "push" changes from the server to the client (without that the client has sent a request to get this)?

 

In UniGui/Web you can only answer to a request from the client!

 

You can use an UniTimer, use websockets (HTML5) or use "Long Polling" (see here)

[gerhard.kimmeringer]

Hi Oliver,

 

thanks yes the client is readonly,

it is only a monitor.

[Oliver Morsch]

it is only a monitor.

Then I would use long polling to refresh "the monitor".

[gerhard.kimmeringer]

Thanks Oliver, i try it!

[gerhard.kimmeringer]

Hi Oliver,

 

thanks for your tip with timer.

 

The eventalerter set a variable in unimainmodule.

 

The timer on the form look at the state of the variable

and if it set as true then refresh the grid.

It works fine and is enoth for the monitor app.