We're aware of the issue and working to fix it. As to your issue - the pages are not actually blank. Rather there is some content that
cannot fit on the current page and is carried over to the next page.
There are several cases when this happens:
- Report Width is greater than than the available page space (Page Width - Left Margin - Right Margin).
is a sub-report, which contains a report that is too wide, and while at
design-time that is not obvious, at run-time it might cause the carry
over to occur.
- There is a report item with boundaries going out to the right from its parent section.
Since often the background color (white in most cases) of the item that
is carried over to the next page is the same as the background of the
report/sections the page seems to be blank.
To see which items are causing the problem, simply change their
background to a different, more contrasting color and run the report in
the WinForms viewer or export it to PDF. The rendered report will
immediately give you a clue about the items which are at fault. Then
simply try making the report items smaller until the "blank" pages
disappear or decrease the report width. We would advise creating the
items so that they do not touch other items, section ends, etc.,
because the processing engine might produce unexpected results. Always
leave a little space (a couple of pixels/points) around report items to
prevent unexpected behavior.
Blank pages at the beginning of the HTML report can appear, because the DetailSection has its KeepTogether
property set to true
and the HTML rendering engine attempts to render it on a single page
(it is later that it "realizes" that this is impossible). Since the
first page contains the ReportHeader, the rendering engine tries to
render the detail on the second page, which has more available space.
In light of this, try setting the KeepTogether
property of the DetailSection to false
and/or delete the ReportHeader section of the report, if you do not need it.
All the best,
the Telerik team
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