How to add a cell from 2 different tables in 2 different Matrix(s) that reside on the same rdlc report?

Question

Hello Community
    Using Visual Studio 2008 I have created a Windows Forms Application in which I created
Embedded Reports (rdlc).
    The embedded reports (rdlc) uses Matrix(s).
    Now on this one rdlc I have dragged 2 Matrix(s) onto the body.
    One of the Matrix datasource dataset name and table name is "DataSet1_Table1.
    A cells in the Matrix has a total column on the end as follows:
=FormatNumber(Sum(Fields!fld1.Value)+Sum(Fields!fld2.Value)+Sum(Fields!fld3.Value)+Sum(Fields!fld4.Value)+Sum(Fields!fld5.Value),"0")
    The other Matrix datasource dataset name and table name is "DataSet2_Table2.
    The cell in this Matrix has a total column on the end as follows:
=Sum(Fields!fld1.Value)+Sum(Fields!fld2.Value)+Sum(Fields!fld3.Value)+Sum(Fields!fld4.Value)+Sum(Fields!fld5.Value)
    As you can see each Matrix has a different table.
    I would like to add the total columns from each table in each Matrix but I haven't been
able to do it successfully. If I have to drag another Matrix or a Textbox on the
body to do it that is okay and/or add another/different formula to a cell onto the body that is
okay too.
    So my question is how can I add the contents of the total in cell from each table in each matrix
which will create the "grand total"?
    Thank you
    Shabeaut

Answer 1

It is possible to reference SSRS elements directly using the ReportItems collection. If your total tablix cell is outside of yoour matrix groups, you can use this collection to accomplish what you want:
=ReportItems!Matrix1Total.Value + ReportItems!Matrix2Total.Value
where Matrix1Total and Matrix2Total is the name of the cell that contains your totals. Note that for this to work, the cell name must be unique. If the total cell is inside a group, it will be repeated once for each instance of the group and will not be
unique.
You may be able to do it using the Sum aggregate and specifying the dataset for the scope variable:
=Sum(Fields!fld1.Value, "DataSet1")+Sum(Fields!fld2.Value,
"DataSet1")+Sum(Fields!fld3.Value,
"DataSet1")+Sum(Fields!fld4.Value,
"DataSet1")+Sum(Fields!fld5.Value,
"DataSet1")+Sum(Fields!fld1.Value,
"DataSet2")+Sum(Fields!fld2.Value,
"DataSet2")+Sum(Fields!fld3.Value,
"DataSet2")+Sum(Fields!fld4.Value,
"DataSet2")+Sum(Fields!fld5.Value,
"DataSet2")
This will work as long as you are not filtering the dataset in your Matrix properties. If you are, those
filters will not apply to this expression and the numbers will not total correctly.
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