StrataFrame Forum » StrataFrame Application Framework - V1 » Business Objects and Data Access (How do I?) » Custom BO field

Custom BO field

Jon Olson — Mon, 16 Oct 2006 08:48:32 GMT

I added a Custom code to my field for a lookup but now I get an error saying I need a fieldpropertydescriptor. How do I fix this (vb.net project)

RE: Custom BO field

StrataFrame Team — Mon, 16 Oct 2006 08:48:32 GMT

Inside the curly braces, just separate the return objects with a comma... it adds them to the array.

This:

New FieldPropertyDescriptor() { }

Tells it to create a new array of type FieldPropertyDescriptor. Whatever you put in the curly braces are items in the newly created array (ReflectionPropertyDescriptor is a subclass of FieldPropertyDescriptor). So, it needs to look like this:

Return New FieldPropertyDescriptor() { New ReflectionPropertyDescriptor("Ctr", GetType(boCalc)), _
New ReflectionPropertyDescriptor("Ftr", GetType(boCalc)) }

Any others that you add just need to be separated by commas.

RE: Custom BO field

Jon Olson — Mon, 16 Oct 2006 08:35:52 GMT

I tried adding a second custom field to the BO, I am not sure how to add the code to make it work

I tried somthing like this but doesnt work

Protected Overrides Function GetCustomBindablePropertyDescriptors() As FieldPropertyDescriptor()

Return New FieldPropertyDescriptor() {New ReflectionPropertyDescriptor("Ctr", GetType(boCalc))}

Return New FieldPropertyDescriptor() {New ReflectionPropertyDescriptor("Ftr", GetType(boCalc))}

End Function

RE: Custom BO field

StrataFrame Team — Fri, 13 Oct 2006 16:17:22 GMT

Excellent, I'm glad you figured it out. We usually post everything in VB.NET, but I think the person that that post was answering was a C# guy...

As for the Type.GetType(boCalc), it's a shared (static) method on the System.Type class, and it only accepts strings, but the GetType(boCalc) is a language keyword, so it accepts the type and knows how to compile it.

And you figured out the creating a new array rather than returinging only a single instance. :)

RE: Custom BO field

Jon Olson — Fri, 13 Oct 2006 14:58:19 GMT

Okay I figured it out.

Protected Overrides Function GetCustomBindablePropertyDescriptors() As FieldPropertyDescriptor()

Return New FieldPropertyDescriptor() {New ReflectionPropertyDescriptor("Ctr", GetType(boCalc))}

End Function

RE: Custom BO field

Jon Olson — Fri, 13 Oct 2006 14:41:03 GMT

Thanks, I saw that before actually. I am just not sure how to convert that to vb.net

This is what I have so far but it doesnt like boCalc.

Protected Overrides Function GetCustomBindablePropertyDescriptors() As FieldPropertyDescriptor()

Return New ReflectionPropertyDescriptor("Ctr", Type.GetType(boCalc))

End Function

RE: Custom BO field

StrataFrame Team — Fri, 13 Oct 2006 13:14:21 GMT

Sorry, Jon, I'm just too lazy to type it again...

http://forum.strataframe.net/FindPost3479.aspx