问题
I try to sum the total of a column of my report based on =ReportItems!Textbox135.Value
This field is not included in the dataset, but is a textfield in the report. I use the following expression in the group header of my report
=SUM(ReportItems!Textbox135.Value)
Which results in the error:
Aggregate functions can be used only on report items contained in page headers and footers
What is the correct expression to sum report items?
回答1:
Have you tried:
=SUM(Fields!YourField.Value)
来源：https://stackoverflow.com/questions/30480345/sum-total-of-report-column