Easy bug to reproduce.  I'm using the SaveCustomizations/LoadCustomizations API to serialize the grid state and reload it.  Now I've added several custom summary calculators to my grid.

When I Load the state of the grid all of the fields with custom summaries now are using the "Sum" summary calculator instead of the custom one.

I examined the xml output by the SaveCustomizations API and it is serializing the Calculator as "Sum" which is obviously not correct.

This bug makes it impossible to use both features simulataneously.

<

igDP:FieldLayout.SummaryDefinitions>

<igDP:SummaryDefinition SourceFieldName="Oface"

Calculator="{x:Static local:TBAShorts.SelectedSum}"

StringFormat="{}{0:#,#;;0}"/>

<igDP:SummaryDefinition SourceFieldName="Qty"

Calculator="{x:Static local:TBAShorts.SelectedSum}"

StringFormat="{}{0:#,#.##;;0}"/>

<igDP:SummaryDefinition SourceFieldName="MTG_WACPN"

Calculator="{x:Static local:TBAShorts.SelectedAverage}"

StringFormat="{}{0:0.##}"/>

<igDP:SummaryDefinition SourceFieldName="MTG_WAM"

Calculator="{x:Static local:TBAShorts.SelectedAverage}"

StringFormat="{}{0:0.##}"/>

<igDP:SummaryDefinition SourceFieldName="MTG_WAOLTV"

Calculator="{x:Static local:TBAShorts.SelectedAverage}"

StringFormat="{}{0:0.##}"/>

</

igDP:FieldLayout.SummaryDefinitions>

ouput of SaveCustomizations():

&lt;summaries&gt;
        &lt;SummaryDefinition SourceFieldName="Oface" StringFormat="{0:#,#;;0}" Calculator="Sum" /&gt;
        &lt;SummaryDefinition SourceFieldName="Qty" StringFormat="{0:#,#.##;;0}" Calculator="Sum" /&gt;
        &lt;SummaryDefinition SourceFieldName="MTG_WACPN" StringFormat="{0:0.##}" Calculator="Sum" /&gt;
        &lt;SummaryDefinition SourceFieldName="MTG_WAM" StringFormat="{0:0.##}" Calculator="Sum" /&gt;
        &lt;SummaryDefinition SourceFieldName="MTG_WAOLTV" StringFormat="{0:0.##}" Calculator="Sum" /&gt;

&lt;/summaries&gt;

My custom calculators, which derive from SumSummaryCalculator

SumSummaryCalculator

record)

{

)

{

)record).DataItem;

(item.IsSelected)

{

)dataValue * item.Weight, summaryResult, record);

}

}

}

}

SumSummaryCalculator

record)

{

)record).DataItem;

(item.IsSelected)

{

.Aggregate(dataValue, summaryResult, record);