Hi,

Yes I am talking about a summary on the Root band only

I also have Child band but I dont summaries them and this work

My Root band is also summaries.

My goal is to summary all columns but only the first row of the Band root  but in each root band we have 2 rows

and actualy all rows are summaries which is the defaut behavior.

I have a invisible columns LineType that indicate me if the actual row is the first or second row

So if the invisible columns LineType=1 then summarise the values

 LineType  ColumnsA   ColumnsB

          1            10              20

          2             5               11

Summary         10                20   <== (This is what i would like to have as a result)

Actualy I have   15                31  <== (This is what i have as a result)

Is there a way or a condition in a formula that I can  summaries only the linetype 1?

Thanks in advance! :)

yannh said:

Do I have to use the UltraCalcManager?

Yes, you have to have an UltraCalcManager in order to use Formulas. 

The error message you have listed here don't make any sense. A "Key Already Exists" message indicates that you are attempting to add an item to a collection with a key that already exists in the collection.  So you need to find out what you are adding and make sure it has a unique key.

The circularity error means that you have two formulas that point to each other in an infinite loop. 

Hi,

Ok I finaly arrive to use the formula "Sum([ColumnsA(0)])" with the UltraCalcManager but the result is not what a was looking for. The actual result summarize only the first row of the Band root of the entire grid.

root    LineType  ColumnsA   ColumnsB

               1               10               20

               2                 5              11

root         1                 7                5               

               2                 15               8 

Total                          17             25   <== (This is what i would like to have as a result)

Actualy I have             10             20  <== (This is what i have as a result)

The total summarize only the first row of the root band but of the first row of the grid only

My goal is to summarize all values of the root band where linetype=1

Is that possible?

Thanks in advance

Okay, that's a different story.

There are several ways to do this. 

1) If you group by the LineType column, then the summaries will be broken up automatically into each group. 

2)You could add an unbound column to the for each LineType and set the Formula of that column to use an 'if' function. Basically, the unbound column's formula would be something like this: 

if (  [LineType] = 1, [ColumnsA], 0 )

Then you could sum this unbound column to get the sum of everything in ColumnsA where LineType is 1. 

3) You could use a CustomSummaryCalculator and do the calculations yourself. 

Hi Mike,

I finaly obtain the result I want with the CustomSummaryCalculator

The problem I got now is that when I change a value in my grid it took around 20 second to update all the summary columns

This is the way I use the CustomSummaryCalculator and I implement the CTotalSummaryWithOutPoTerms class with the condition I want in it

Is there something I can do to optimise the calculation?

I dont use any CalcManager . Is that the raison of my problem?

For i As Integer = 1 To NumberOfcolumnToShow

   myBand.Summaries.Add(i.ToString, SummaryType.Custom, New CTotalSummaryWithOutPoTerms(i.ToString), myBand.Columns(i.ToString), SummaryPosition.UseSummaryPositionColumn, Nothing)

   myBand.Summaries(i.ToString).SummaryDisplayArea = SummaryDisplayAreas.BottomFixed

   myBand.Summaries(i.ToString).DisplayFormat = "{0}"

   myBand.Summaries(i.ToString).Appearance.TextHAlign = HAlign.Right

Next

End Sub

Thanks in advance

 Well, it's hard for me to suggest any ways you might optimize the sumaries, since you didn't include the code for your CustomSummaryCalcuator here. 

UltraCalcManager summaries are calculated asynchronously (by default), so you might get more responsive UI using CalcManager instead.