Reporting Services - Report Paramaters Losing State

Question

I am embedding a report into my ASP.NET app using the report viewer control.

When I change a paramater value and click View Report, I'm losing my paramater selection.

Any ideas?

Answer 1

检查是否启用了ViewState（针对页面和控件）

Answer 2

问题是我在后面的代码中设置了报告位置，但没有检查是否存在回发，因此每次都需要重置报告。