How to passing the the form control value from child form to parent form

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Dear all,

I has some trouble with the passing value between two form.

I have form parent: formA, child form: formB.

From formA, I click on a button to open formB (dont pass anything from formA to formB), and in formB, I do something (text something into stringedit control for an example) and I want to pass the this text(in stringedit control) to formA.

How can I do, please give me some ideal.

Thanks,

DatMC

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Abhishek_mishra 405 on at

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You can achieve this by accessing caller object in Form B.

In FormB, get the caller object like below:

FormRun caller;

// Get caller form run.

caller = element.args().caller();

// Lets suppose there is a stringEDT control named "A" in form A.

// In form B, you have a control named "B" from which value will be passed to "A"

// Get that control reference like below

FormStringControl fcs;

fcs = caller.control(caller.controlId("A"));

fcs.text(B.valueStr());

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Martin Dráb 237,801 Most Valuable Professional on at

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Fortunately AX 7 offers a nice object-oriented, statically-typed way how to do it.

Create an interface, e.g. IValueReceiver, with the operation you need. You want to pass a text value, so you need a method that will accept a string parameter.

Such as:

interface IValueReceiver { void ReceiveText(str _s){} }

Let FormA implement the interface and add any logic you need to happen when you get the value.

In FormB, get the caller object, cast it to the interface and call the operation:

IValueReceiver receiver = this.args().caller() as IValueReceiver(); if (receiver) { receiver.receiveText("Text from your control"); }

This keeps the two forms clearly separate, without exposing any implementation details such as control names, and it gives you compile-time control and IntelliSense.

A simpler solution may be passing an object through args.parmObject(), casting it to a specific type (class or interface) and setting the value there. Because both forms share the same object, they can use it to exchange information.

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Community Member on at

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thanks Abhishek_mishra,

but where I can put these code, I put caller in init() method, and

FormStringControl fcs;

fcs = caller.control(caller.controlId("A"));

fcs.text(B.valueStr());

in the closeok() method but not effect.

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Community Member on at

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Thanks Martin, but where I can put the code in formB (in init(), or run() or closeOK() ...)

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Martin Dráb 237,801 Most Valuable Professional on at

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It depends on when you want to execute the action. init() and run() run before users can put anything into your StringEdit control, so it doesn't sound like a good choice.

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Abhishek_mishra 405 on at

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CloseOk method is called only when form is closed with a command button of command type "OK".

Try putting below code in close method of form:

FormStringControl fcs;

fcs = caller.control(caller.controlId("A"));

fcs.text(B.valueStr());

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Dear Abhishek_mishra,

I get the error "Formrun object not initialized" but I can not fix, can you help me please.

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Abhishek_mishra 405 on at

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How are you calling Child form(Form B), using menu item?

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I use ClassFactory.formRunClass(args) method to calling formB

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Martin Dráb 237,801 Most Valuable Professional on at

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Use a menu item, if you can.

Otherwise you have to fill the caller by yourself: args.caller(element).

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