Is it possible to add a display method in form datasource through extension?

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Posted on by FlorinF

Hello.

Is it possible to add a display method in a form datasource through extension and then use it as a data method on new control added to the same form (through extension) ?

Example:

[ExtensionOf(formDataSourceStr(formname,formdatasourcename))]
final class ABCDatasource_Extension
{
public display str showString()
{

return "test" ;
}
}

Then I add new string control to the "formname" by creating an extension of the form. I want to use showString display method as a data method for this control.

I'm getting compilation error: the method doesn't exists.

I try to use COC as much as possible and to avoid static methods.

Thank you.

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Verified answer

Martin Dráb 237,976 Most Valuable Professional on at

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If I'm not mistaken, it's supported now, although it wasn't possible in some older versions of D365FO.

Neverthelss your method isn't correct - if a display method isn't on a table, it must take a table buffer as the parameter.

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FlorinF on at

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Hi Martin ,

I have the following code :

[ExtensionOf(formDataSourceStr(InventOnhandItem, InventSum))]

final class InventOnhandItem_FormDataSource_Extension

{

display date expirationDate(InventSum _inventSum)

{

return today();

}

}

The error is :

Severity Code Description Project File Line Suppression State
Error Path: [AxFormExtension/InventOnhandItem.xx/Controls/FormExtensionControlk0ln0vls1/ExpirationDate/DataMethod]:The data method 'expirationDate' was not found on the data source 'InventSum' or its base table/view.

My version is:

Application release

Microsoft Dynamics 365 for Finance and Operations (10.0.15)

Platform release

Update39 (7.0.5816.41512)

Thank you.

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Verified answer

Gunjan Bhattachayya 35,423 on at

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Hi FlorinF,

You should be able to choose the data method from the drop down. You can try this value as well - InventOnhandItem_FormDataSource_Extension.expirationDate

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FlorinF on at

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Hi Gunjan,

It's working if you provide the full path to the method as you said : InventOnhandItem_FormDataSource_Extension.expirationDate

I was expecting to see the method in the drop down, but it's not listed

Thank you.

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Verified answer

Gunjan Bhattachayya 35,423 on at

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It had worked for me a couple of weeks back when it showed the data method in the drop down. Could you try doing a build of your Dev model and check if that gets the drop down working?

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FlorinF on at

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Hi ,

After full model build, the method is displayed in the drop down as : InventOnhandItem_FormDataSource_Extension.expirationDate

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