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Unable to cast object of type

Posted on by 9
Unable to cast object of type 'Dynamics.AX.Application.CustTable' to type 'Dynamics.AX.Application.smmBusRelTable'.
 
 
 
 
 
 
I think so the casting code here is possibly giving error.
 
[ExtensionOf(formDataSourceStr(DirPartyQuickCreateForm,DirPartyEntity))]
final class DirPartyQuickCreateForm_DirPartyEntityDS_Extension
{
    public void initValue()
    {
       
        //FormDataSource DirPartyEntity_ds = this;
        //smmBusRelTable DirPartyEntity = DirPartyEntity_ds.cursor();
        next initValue();
           
    }
}
 
For reference some more code:
 
 [FormControlEventHandler(formControlStr(CustTable, CustCommodities_ItemNameAlias), FormControlEventType::Lookup)]
    public static void CustCommodities_ItemNameAlias_OnLookup(FormControl sender, FormControlEventArgs e)
    {
        SysTableLookup          sysTableLookup  = SysTableLookup::newParameters(tableNum(CustomerCommodities), sender);
        Query                   query           = new Query();
        QueryBuildDataSource    queryBuildDataSource;
        ;
        
        queryBuildDataSource    = query.addDataSource(tableNum(CustomerCommodities));
        
        sysTableLookup.parmQuery(query);
        
        
        sysTableLookup.addLookupfield(fieldNum(CustomerCommodities, ItemNameAlias));
        
        
        sysTableLookup.performFormLookup();
 
        FormControlCancelableSuperEventArgs cancelableSuperEventArgs = e as FormControlCancelableSuperEventArgs;
        cancelableSuperEventArgs.CancelSuperCall();
    }
 

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