Restrict the user to Open Form, if Already Opened by others Ax 2012

Hi frnds, Today we see how to restrict the user to open form , if That form is already open by other users in AX 2012.

Here I take 2 customized Forms With customized Table.In customized table UserId field is added.

And based that user id I am Implement the code.

In child form i added Init method And Close method.

Init Method:

public void init()

{

    DaxTestIn daxTestIn;

    Formrun formrun;

        super();

    daxTestIn = element.args().record();

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

        if (!daxTestIn.User)

    {

        ttsBegin;

        daxTestIn.User = curUserId();

        daxTestIn.doUpdate();

        ttsCommit;

    }

    else if(daxTestIn.User != curUserId())

    {

        throw error(strFmt("The same AccountNum(%1) is already opened by %2", daxTestIn.AccountNum,daxTestIn.user));

    }

}

Close Method:

public void close()

{

    DaxTestIn daxTestIn,daxTestInLoc;

    Formrun formrun;

       super();

    daxTestIn = element.args().record();

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

    if (daxTestIn.User)

    {

        ttsBegin;

        select forUpdate daxTestInLoc where daxTestInLoc.RecId==daxTestIn.RecId;

        daxTestInLoc.User = ' ';

        daxTestInLoc.doUpdate();

        ttsCommit;

    }

}

Output:

If i try open 1001 record It throw that error.

That 1001 record is is already used by other user.

Keep Daxing !!

I saw other Blog  they consider SessionId and they worked on sales order.Check below link for that blog.

https://ax1231.wordpress.com/2018/02/06/restrict-the-user-to-open-the-particular-form-if-the-same-form-already-opened-by-any-other-user/