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Band 0 Key Changing
posted

Hi All,

I have an UltraGrid bound to an object containing several properties one of which is a collection. That collection in turn contains objects where one of the properties is also a collection. Binding to this object creates three bands as expected: Band 0, Band 1 and Band 2. I have set the Key on each of these bands in the DisplayLayout to be Legs, Transports and Charges respectively.

At runtime the Key of Band 0 becomes BindingList`1 (the name of the type of the bound property) instead of Legs. However, the Keys of the other bands remain as I set them at design time.

Does anyone have any insight as to what's happening here and whether it is expected behaviour?

Thanks,

Andy.

 

 

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  • 37774
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    Andy,

    The keys of the bands are provided by the .NET BindingManager for the properties that are represented.  In your case, it sounds like Transports is the name of a property on Band 0 that is a collection, and Charges is the name of a property on the Transports band, so the BindingManager will return these properties.  You might be able to have a higher degree of control by implementing ITypedList on your base collection.

    As for the purpose of setting the name of the bands at design-time, this is so that the grid can later match up the serialized band with the band that appears at run-time and apply the properties that you had set already.

    -Matt

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