Required field Error message : Validator « Development « Flex

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Flex » Development » Validator Screenshots  Required field Error message            <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">     <mx:Validator id="surnameV"         required="true"          source="{surnameTxt}"          property="text"         requiredFieldError="Your Surname is a required field."/>                                   <mx:Form id="myForm">         <mx:FormItem label="Insert Surname" required="true">             <mx:TextInput id="surnameTxt" />         </mx:FormItem>                    </mx:Form>      </mx:Application>                                                     Related examples in the same category 1. A basic validator for requirement 2. Set source and trigger for validator 3. Set source and property for Validator 4. Validate model data with Validator 5. Declare validators in ActionScript 6. Assigning a validator to the data model 7. Set validator property to text 8. Set validator domain 9. Validator returns ValidationResultEvent 10. Use Validator.validateAll() to invoke validators in an Array 11. Assign validator target 12. MXML validator classes 13. Call validator validate method in button click action handler 14. Use a Button control to invoke a validator 15. Use Validators in function 16. Run a list of validators defined in an Array 17. Display validation result for a list of validator one by one 18. Use a validator along with a data binding to validate 19. Create and invoke a validator programmatically in when a user clicks a Button control 20. Invoking multiple validators in a function 21. Explicitly handing validator validation events 22. Use Validator defined in MXML and call its validate method 23. Create an array with the validators 24. Create and invoke a validator programmatically when a user clicks a Button control 25. Use method to invoke two validators in response to the click event for the Button control 26. Use a Button control to invoke a validator, but the application first determines which validator to execute 27. Use Email validator 28. Use Array.filter() filter out disabled validator 29. Use button event to trigger a validation event 30. ActionScript based Validation 31. Form data validation 32. Triggering validation by using events 33. Triggering validation by using the default event 34. Call validation method in a user method 35. ValidationResultEvent property 36. Changing the color of the validation error message 37. Clearing a validation error 38. Validate one component but have validation results apply to a different component 39. Explicitly handling component validation events 40. More than one field date validation 41. Data Validation Through Events 42. Data Validation Through ActionScript 43. Triggering validation with Events 44. Write the performValidation() function 45. Perform a validation on a required input field 46. Reset Value based on validation result 47. Set errorString to create an error tip without performing any validation 48. validate handler and invalid handler 49. Run the validate() method and assign the result to a variable