Can Flex use a validator to verify that the value of a variable is a specific value?

OK. flex can write custom validations and write validations according to your needs. Here's an example:

package mycompenent private var results:array;Define an array to store errors Override protected function dovalidation(value:object):

array return results;5) The extends keyword indicates inheritance. (6) The super keyword indicates the method in the inherited subclass, so the "statement" indicates the dovalidator method in the inherited subclass. (7) The override keyword represents a rewrite function.

8) The validationresult class is the validation result class, which is contained in ". The constructor of the validationresult class has four parameters. The first parameter indicates whether it is an error type, the second parameter indicates a specific property, the third parameter indicates the error type, and the fourth parameter indicates an error message.

9) The "stringtoolong" error type is customized in this program, and it prompts "The character length is more than 6". This error occurs when the length of the data component is more than 6 bits. (4) Call the custom validation class.

The namespace must be indicated when calling a custom component. The components provided by Flex are all in the "MX" namespace, so they are automatically generated when you create a new MXML.

Statement. The syntax for referencing a custom component is shown below. Outermost Component .... xmlns:

Space name ="The package to which the class belongs"> …Space Name: The space name of the custom component > can be arbitrarily named. The package to which the class belongs must be the same as the package keyword when the class was defined.

The following ** refers to the custom component.

xmlns:mycomp="mycompenent.*"> …The following ** calls the myvalidator component to validate the data in the input box.

xmlns:mycomp="mycompenent.*" fontsize="13">

All components that can get focus can listen for focus in events. Add this event to all the components you want to judge, and you will know which component gets the focus after receiving the event.

Hello yes, you use this class in two files, it will generate two instances, the operation of i is carried out in two classes separately, you can define i as static, that is, static;

private static var i:int = 10;

You open the debug view, in the upper right corner, you want to see, you set a breakpoint here, debug the program, when you hit this breakpoint, the program will stop here, the "variables" view can display the value of name, and there is a yellow bottom box.

Selecting a row is OK, but selecting a cell doesn't seem to work.

You can assign the contents of this line to a variable or a control!

The implementation is:

Load the SQL statement into the MSHflex control by clicking on the row.

dim str as string

for i =0 to 9 'You **** have 10 columns str= , i).'textmatrix method: text1=str

next i

If you need to get unknown rows or columns, you can write nested for loops.

Pure handwriting, I hope it can help you, I don't know how to ask!

Write a VO first

2.Then write on it: This is the method added: public function addbuttonmember():void

else if("icons/")

Layout of the page:

In this way, the backend can receive the parameters from the page at one time!

OK. flex can write custom validations and write validations according to your needs. Here's an example:

package mycompenent { import ;reference validator class import ; Reference validationresult class public class myvalidators....

Set up a singleton class that holds all the applied objects, arrays, addresses, etc.