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Saikat GangulySaikat Ganguly 

Call external WS on click of Standard button like 'save' or other.

Hello,
Is there a way to call external WS on click of a Standard buttons using Apex.? Or is it possible to call external WS on click of Standard buttons?.

The thing I want to do is, When admin of a salesforce account added a new value in a picklist so on 'save' button of a new picklist value I want to call an External WS for some further updation at my end.?

Is there is  a way to do.. I already got an idea about external WS call on Cutom buttons but I want to do the same thing on Standard Buttons
Thanks in advance.
pconpcon
No, there is no way to do this with standard buttons.  You can override the functionality by creating a custom Visualforce page with a standardcontroller and a custom extension [1].  Then as part of the save method, do your callout.

Alternately if you do not need the call to occur synchronously, you can do the callout as part of a trigger and have it fire asychronously.

[1] http://salesforce.stackexchange.com/questions/32593/visualforce-overriding-save-button-behavior