Calling a form datasource method in d365

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Posted on by Muneeb Umer

Hi All,

i need to call form datasource method in event handler method.

[FormDataSourceEventHandler(formDataSourceStr(SalesTable, SalesLine), FormDataSourceEventType::Activated)]
public static void SalesLine_OnActivated(FormDataSource sender, FormDataSourceEventArgs e)
{

salesline_ds = element.dataSource(formDataSourceStr(salestable, SalesLine)) as FormDataSource;
salesline = salesline_ds.cursor();

salesline_ds.mcrMarginPercentStr(tmpSalesLine));

}

i found the following error

Severity Code Description Project File Line Suppression State
Error ClassDoesNotContainMethod: Class 'FormDataSource' does not contain a definition for method 'mcrMarginPercentStr' and no extension method 'mcrMarginPercentStr' accepting a first argument of type 'FormDataSource' is found on any extension class.

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Sukrut Parab 71,710 Moderator on at

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Where you created method mcrMarginPercentStr? Is it really exist on form data source salesLine ? If it exist , did you compile package where you created data source extension ? Also sender is your formdatasource , you don't have to write extra line you wrote in the above code.

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Martin Dráb 237,970 Most Valuable Professional on at

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You don't need your code for getting the data source object - you've already got it in the sender parameter.

Nevertheless FormDataSource class indeed doesn't have such a method. You can use the following workaround to call methods defined on forms:

Object dsAsObject = sender; dsAsObject.mcrMarginPercentStr(tmpSalesLine);

Nevertheless it's a display method; it's not clear why you want to execute it from your code.

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Community Member on at

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Hi Muneeb Umer ,

Try this :

[FormDataSourceEventHandler(formDataSourceStr(SalesTable, SalesLine), FormDataSourceEventType::Activated)] public static void SalesLine_OnActivated(FormDataSource sender, FormDataSourceEventArgs e) { FormRun formRun= sender.formRun(); Object salesline_ds = formRun.dataSource(formDataSourceStr(salestable, SalesLine)) as FormDataSource; SalesLine salesline = salesline_ds.cursor(); salesline_ds.mcrMarginPercentStr(tmpSalesLine); }

Best Regards

Tom Cai

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Martin Dráb 237,970 Most Valuable Professional on at

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Guys, please use the </> button in the rich formatting view to paste source code; it makes it easier to read.

And once more, this:

FormRun formRun= sender.formRun(); formRun.dataSource(formDataSourceStr(salestable, SalesLine)) as FormDataSource;

gives you the same thing you already have in the sender variable, therefore it can be thrown away completely.

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Muneeb Umer 70 on at

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Thanks Tom,

this works for me changing type Formdatasource to object will work.

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Martin Dráb 237,970 Most Valuable Professional on at

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Which is what I suggested before with my simpler solution. Doesn't it work for you?

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Muneeb Umer 70 on at

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Thanks Martin,

That's also work for me and as you mentioned it is a more simpler solution.

Thanks again.

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Noakesey 50 on at

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Is anyone hitting this BP deviation when accessing a datasource method from an event handler?

"A late bound call is made to .... In source system (AX 2012) it is possible to dynamically call methods where the number and type of the parameters does not match with the method definition. This is not supported in AX 7, where the number and types of parameters have to match. Even if the parameters do match, the late bound call is extremely expensive. Mitigation: Use a class or interface hierarchy to provide a type safe fast call, or use the IS and AS operators to cast to a known type before calling."

Just wondering what the best practice approach is?

I'm trying to call editMarkTrans on the CustTransOpen datasource of the CustOpenTrans form from a button clicked event handler:

e.g.

[FormControlEventHandler(formControlStr(CustOpenTrans, MyButton), FormControlEventType::Clicked)] public static void MyButton_OnClicked(FormControl sender, FormControlEventArgs e) { FormRun fr = sender.formRun() as FormRun; FormDataSource fds = fr.dataSource(formDataSourceStr(CustOpenTrans, CustTransOpen)) as FormDataSource; CustTransOpen custTransOpen = fds.getFirst() as CustTransOpen;
Object obj = fds as Object; obj.EditMarkTrans(true, custTransOpen, NoYes::Yes); }

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AX Techie 995 on at

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Hi Paul,

Is your problem solved. Please let me know.
[quote user="Muneeb Umer"]
Hi All,

i need to call form datasource method in event handler method.

[FormDataSourceEventHandler(formDataSourceStr(SalesTable, SalesLine), FormDataSourceEventType::Activated)]
public static void SalesLine_OnActivated(FormDataSource sender, FormDataSourceEventArgs e)
{

salesline_ds = element.dataSource(formDataSourceStr(salestable, SalesLine)) as FormDataSource;
salesline = salesline_ds.cursor();

salesline_ds.mcrMarginPercentStr(tmpSalesLine));

}

i found the following error

Severity Code Description Project File Line Suppression State
Error ClassDoesNotContainMethod: Class 'FormDataSource' does not contain a definition for method 'mcrMarginPercentStr' and no extension method 'mcrMarginPercentStr' accepting a first argument of type 'FormDataSource' is found on any extension class.
[/quote]

Thanks.

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PK Axapta 140 on at

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Hi Paul,

Could you please advise how you resolved this BP warning (Mitigation: Use a class or interface hierarchy to provide a type safe fast call, or use the IS and AS operators to cast to a known type before calling.)

Any pointers would be highly appreciated.

Many thanks in advance.

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