Form DataSource Deleting EventHandler

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Posted on by OmarAbdlhamed

i wanna prevent the user from delete a record based on condition

i used eventhandler for form datasource deleting eventhandler i used the below code

[FormDataSourceEventHandler(formDataSourceStr(PurchTable, PurchTable), FormDataSourceEventType::Deleting)]
public static void PurchTable_OnDeleting(FormDataSource sender, FormDataSourceEventArgs e)
{
// ValidateEventArgs args = e as ValidateEventArgs;
//boolean result = args.parmValidateResult();

PurchTable purchTable = sender.cursor() ;

if(purchTable.purchid == '1234')
checkFailed("you can not delete this PO");

}
but still can deleted it
i tried to get the eventargs result by below code

// ValidateEventArgs args = e as ValidateEventArgs;
//boolean result = args.parmValidateResult();

but it gives and error i wanted to do like that

// ValidateEventArgs args = e as ValidateEventArgs;
//boolean result = args.parmValidateResult()

if(purchTable.purchid == '1234')
result = result && checkFailed("you can not delete this PO");

but it gives an error

any help please?

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Martin Dráb 241,511 Most Valuable Professional on at

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You claimed your question was about AX 2012, but I'm pretty sure it's wrong and it's actually about F&O. Therefore I've moved the thread to an F&O forum and deleted "AX 2012" tag. Let me know if I made a mistake.

The problem with your code is that it never sets the validation result to false. It only adds a warning message to infolog, but the validation still succeeds.

You need to use args.parmValidateResult(false) or args.parmValidateResult(checkFailed(...)).

Also, if you need a help with an error, you should tell us what error you get and where. "It gives an error" isn't enough. Please realize that we can't help you if you don't give us enough informatiom about your problem.
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Mohit Rampal 12,573 Moderator on at

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Hi Omar, Instead of writing this validation on OnDeleting event, please use OnValidatingDelete event of form datasource.
OmarAbdlhamed 48 on at

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Hi Martin , Hi Mohit

thanks for your feedbacks

my requirement is prevent the user of deleting purchase order record based on certain condition in PurchTable form

my question was how to prevent it , if i write checkfailed the deleting still occur

but now i found my solution there is the below code

[FormDataSourceEventHandler(formDataSourceStr(PurchTable, PurchTable), FormDataSourceEventType::ValidatingDelete)]

public static void PurchTable_OnValidatingDelete(FormDataSource sender, FormDataSourceEventArgs e)

{

FormRun form = sender.formRun();

FormDataSource purchTable_ds = form.dataSource(formDataSourceStr(PurchTable, PurchTable)) as

FormDataSource;

PurchTable purchTable = purchTable_ds.cursor();

var args = e as FormDataSourceCancelEventArgs;

if(purchTable.purchid == '123')

{

boolean doCancel = !checkFailed("you can not delete this PO");

args.cancel(doCancel);

}

}

my solution was in the below 3 lines

var args = e as FormDataSourceCancelEventArgs;

boolean doCancel = !checkFailed("you can not delete this PO);

args.cancel(doCancel);