We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. Image for the cookie policy date
Starting in 2019, the Reporting control is no longer included in Essential Studio. If you're experiencing issues with the Syncfusion Reporting Platform, Report Viewer, Report Designer, or Report Writer, we recommend migrating to Bold Reports, our dedicated reporting platform.

Bold Reports offers a comprehensive suite of tools and features for all your reporting needs, and we will help you make a smooth transition from the discontinued control. Our support team at https://support.boldreports.com/ is here to assist you with any questions or difficulties you may encounter during the migration process.

We thank you for choosing Syncfusion and appreciate your understanding.

Parameter with "Allow null value" and "Available values from dataset"


I am new to the ReportViewer (and to all of Syncfusion components). Currently i see into it and try to use ReportViewer to render some of already existing reports in our project. All reports work fine via standard Report Manager in browser.
And i stuck with problem that ReportViewer does not include NULL-values in available values combobox for a parameter which fills from a dataset even when the parameters property "Allow null value" is set.

In attached ZIP i put the very simple project showing the problem, rdl report, rds for values of parameter, and two pictures - one for standard Report Manager rendering the report and second for ReportViewer.
Please, check this and recommend what i need to do to get NULLs available in combobox.

Thanks in advance,
Sergey Salnikov.

Attachment: NullParamIssue_f9544ca8.zip

1 Reply

MJ Mariya Joseph M Syncfusion Team March 15, 2016 12:09 PM UTC

Hi Sergey,

We considered this “ReportViewer does not include NULL-values in available values combobox” as an issue and a support incident has been created under your account to track the status of this requirement. Please log on to our support website to check for further updates.

Mariya Joseph M.

Live Chat Icon For mobile
Up arrow icon