Error creating custom BO property


Error creating custom BO property
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Larry Tucker
Larry Tucker
Larry Tucker
posted 17 Years Ago
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Group: StrataFrame Users
Posts: 69, Visits: 308
I'm getting an error "Object reference not set to an instance of an object." in the FieldPropertyDescriptor code and cannot figure it out.  Maybe a second pair of eyes will help.  I'm pretty sure it is copied straight from the Help.

(This code is in my StaffBO.vb.)

Thanks,

Larry

#Region " Custom Field Properties "

''' <summary>

''' cLastFirst

''' </summary>

''' <remarks></remarks>

<Browsable(False), _

BusinessFieldDisplayInEditor(), _

Description("Staff full name, last name first"), _

DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)> _

Public ReadOnly Property [CLASTFIRST]() As System.String

Get

Return Me.CLASTNAME & ", " & Me.CFIRSTNAME

End Get

End Property

 

Protected Overrides Function GetCustomBindablePropertyDescriptors() As MicroFour.StrataFrame.Business.FieldPropertyDescriptor()

Return New MicroFour.StrataFrame.Business.FieldPropertyDescriptor() { _

New MicroFour.StrataFrame.Business.ReflectionPropertyDescriptor( _

"cLastFirst", GetType(StaffBO))}

End Function

#End Region
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Trent Taylor
Trent Taylor
Trent Taylor
posted 17 Years Ago
StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)StrataFrame Developer (14K reputation)
Group: StrataFrame Developers
Posts: 6.6K, Visits: 7K
OK...first of all, the framework and VB.NET are not necessarily case sensitive, but the core of .NET is regarding a type descriptor.  Anytime that you create a type descriptor, it should always match the name of your custom property...whether you are in a case sensitive language or not, this is ALWAYS the safest thing since there are other core .NET classes that get used within the framework.

Second, how would I add a second custom property descriptor to my StaffBO?

It may be too late, but there is no need to start another thread.  But to do this, just add another item to the array:

Return New MicroFour.StrataFrame.Business.FieldPropertyDescriptor() { _
   New MicroFour.StrataFrame.Business.ReflectionPropertyDescriptor("cLastFirst", GetType(StaffBO)), _
   New MicroFour.StrataFrame.Business.ReflectionPropertyDescriptor("MySecondProperty", GetType(StaffBO))}
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Error creating custom BO property
Larry Tucker - 17 Years Ago
     Never mind, The call is apparently cap sensitive, and changing it to...
Larry Tucker - 17 Years Ago
     Actually, Maybe I do need some help... <s>. I'm obviously new...
Larry Tucker - 17 Years Ago
     Not to be pushy, but I'm going to start a second thread for this...
Larry Tucker - 17 Years Ago
             OK...first of all, the framework and VB.NET are not necessarily case...
Trent L. Taylor - 17 Years Ago
     Trent, Thanks for the help. That does it nicely. (I'm trying to study...
Larry Tucker - 17 Years Ago
             No problem :)
Trent L. Taylor - 17 Years Ago

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