Replied 27 June 2022, 4:37 pm EST
As it is not possible to change height of the page header/footer dynamically. What you can do is set the page footer's height before the report is rendered, printed or exported by using the following lines of code:
bool isValid= Length.TryParse("5cm",out Length height);
report.Report.PageFooter.Height = height;
If this doesn't resolve your issue, I would suggest you to switch to Section Reports as Section Reports supports event based rendering and you will be able to fulfill your requirement using the page header event.