How do I calculate the sum of a column in a table of report viewer? Please do refer below.

See more:

C#

RDLC

VS2013

report-viewer

[This is a rough illustration 1st part.][1]


I subscribe to the subreport from my main report. Now the subreport handler function decides the data in the subreport. The 3 column data in the subreport are of int type. Also the Data1 is the parameter for the subreport. So you understand that the number of Data1 values in column1 determines the number of subreports generated.

[Rough illustration final result][2]


[1]: http://i.stack.imgur.com/yvwfP.png
[2]: http://i.stack.imgur.com/JAUQJ.png

How do I calulate the sum as shown in the figure?

What I have tried:

I tried using sum function but that does not apply here as the generated subreports are one row joined as display a full table.