Message handling for incorrect data

Question

Hi Guru's,
In my WebDynPro form, I have one input field. When the user enters a value and click submit, the details are populated in a table based on RFC call.
I want to perform an error handling which will return an error message (via message manager) when the user enters a wrong value and click submit. In other words, if the user leave the field empty or enters a wrong value in te field and click submit, teh error message gets triggered.
How can i do this?
Thanks

Answer 1

Hi Syed,
Assuming that the value entered in the inputfield is passed as a parameter to the RFC call, In the action method associated with the button write following code.
Say,
inputField context attribute = name
action name = Submit
if(wdThis.wdContext.CurrentContextElement.getname == null)
  wdComponentAPI.getMessageManager.reportException("<error message>",true);
else
  // call your rfc and execute
  // assuming that your rfc return a boolean value as the response for input
  // true for correct input anf false for wrong input
  if(!result)
     wdComponentAPI.getMessageManager.reportException("<error message>",true);
  else
  {// navigate to the next view}
Hope this helps you