Disabling Datasource differnet from the sender in EventHandler

(0) Share

Report

Posted on by Community member

Hi everyone, i have task where i need to disable the Datasource(SalesLine) in the forum SalesTable when the SalesEditLines is open.

to do so i used an event handler like this

[FormEventHandler(formStr(SalesEditLines), FormEventType::Activated)]    public static void SalesEditLines_OnActivated(xFormRun sender, FormEventArgs e)    {        Args    args;        FormRun formRun;        Args = new Args(formStr(SalesTable));        formRun = New FormRun(Args);        FormDataSource SalesLine_ds = formRun.dataSource(formDataSourceStr(SalesTable, SalesLine ));                SalesLine_ds.allowEdit(false);    }

but i always getting /Object reference not set to an instance of an object./ for SalesLine_ds.

thank you in advance for your help.

All responses (2)

Answers (1)

Verified answer

Waed Ayyad 6,301 Super User 2024 Season 2 on at

Like (1)

Report

Disabling Datasource differnet from the sender in EventHandler

Hi @ Community User,

Try this code, as I understand you want to disable caller datasource? but if you can give us more details to help you better.

[FormEventHandler(formStr(SalesEditLines), FormEventType::Activated)]
public static void SalesEditLines_OnActivated(xFormRun sender, FormEventArgs e)
{
FormRun formRun;
formRun = sender.args().caller();
FormDataSource SalesLine_ds = formRun.dataSource(formDataSourceStr(SalesTable, SalesLine ));
SalesLine_ds.allowEdit(false);
}

Regards,

Waed Ayyad

Please mark this answer as "Verified" if it solved your issue. In order to help others who will face a similar issue in the future
Layan Jwei 7,345 Super User 2024 Season 2 on at

Like (1)

Report

Disabling Datasource differnet from the sender in EventHandler

Hi Community User,

sender here is the SalesEditLines form -- this form doesn't contain SalesTable or SalesLine, if you debug you'll see that SalesLine_ds is null that's why when the code reaches SalesLine_ds.AllowEdit(false) you get the object reference error.
Are you sure you want to disable SalesLine?

please take a screenshot of you want to disable

Thanks,
Layan Jweihan

Disabling Datasource differnet from the sender in EventHandler

Helpful resources

News and Announcements

Quick Links

December Spotlight Star - Muhammad Affan

Top 10 leaders for November!

Community AMA December 12th

Leaderboard

Featured topics

Product updates

Disabling Datasource differnet from the sender in EventHandler

Helpful resources

News and Announcements

Quick Links

December Spotlight Star - Muhammad Affan

Top 10 leaders for November!

Community AMA December 12th

Subscribe to

Leaderboard

Featured topics

Product updates