RefreshReport flicker RRS feed

  • Question

  • Ultimately I want a line graph to monitor the value of an object's property over time in vs2005 and I want it to look good and not be a third party component.

    The report viewer seems to be the ticket and it works really well except that my WinForm app flickers in the area the reportviewer resides each time I call RefreshReport(). I am using a local report in this case. From what I've read, RefreshReport "causes all data in the report to be reloaded and rendered".

    How do I prevent the flicker from happening when RefreshReport() is called? Or is there another way to update what I see in the report viewer after I've updated the data source object?
    Tuesday, April 21, 2009 9:28 PM


All replies

  • First thing, certainly your application reloads the data and refreshes report very quickly.
    That's good as per as performance is concerned but it may be a Flickering for an eye.

    Well, when the GUI of Screen changes very quickly for human eye. That can be a Flickering for human eye.

    So, I have a suggestion to give human eye a feel of smooth images so that it does not consider it as flickering.

    Try something like:


    If it suits as per your requirement, it's well and good.

    Regards, Lakra :) - If the post is helpful or answers your question, please mark it as such.
    • Proposed as answer by Abhijeet Lakra Wednesday, April 22, 2009 8:43 AM
    • Unproposed as answer by tackerman Monday, April 27, 2009 10:02 PM
    Wednesday, April 22, 2009 8:42 AM
  • Aby Lex, did you try your own solution?

    I should specify that I am doing "real time" monitoring here. For example graphing the bits per second received on a network interface and updating the report every second.

    Already the test I'm doing does a 1 second sleep, generates a couple random numbers to graph and then uses the RefreshReport to display them.

    I should be clear that I am not running any sort of database queries and I'm simply testing the use of the ReportViewer against a plain old object.  I already specified to not display "Generating Report" while RefreshReport() executes. I also tried extending report viewer so I could make sure it was "double buffered".

    I just want some nice graphs that are ready to use with vs2005. I know there are third party ones available but I'd like to avoid them.
    Monday, April 27, 2009 10:16 PM
  • Hi,
    If you want do something real time and want some nice graph, you should consider using the Microsoft Chart Controls for .NET Framework 3.5

    It comes in both ASP.NET and Windows Forms controls.

    And here is a link to my colleague's blog that has the links to info about the controls:


    Stella Chan
    Lead Program Manager
    SQL Server Reporting Services
    Tuesday, April 28, 2009 5:54 PM