Good morning,
We have a problem that we cannot resolve watching the documentation.
After we created a report using wizard, we tried to impost specified parameters, but we do not managed to make them independents between them. For example we do not succeed to execute a research for only one of the indicated parameters also having insert NULL provision and finally we have some trouble to apply filters from a master to a subreport.
We would like to ask you a help to resolve these problems.
Thank you so much.
We look forward to your answer,
Yours faithfully.
1 Answer, 1 is accepted
To create an "independent" parameter you have to set the Report Parameter's AllowNull property to True and set a Filter to:
Expression Operator Value
=========== ======== =================================
=Fields.MyField = =IsNull(Parameters.MyParam, Fields.MyField)
For more information on the topic check out the Do not filter on null blog article.
About your second question please elaborate on your specific scenario or send us a sample project that illustrates the issue you are experiencing. For general information please check out the Creating Master-Detail Reports Using SubReports help article demonstrates how to create a Master-Detail report using a SubReport item to contain detail data. A Report Parameter is used to filter the detail report on product category.
Greetings,
Peterthe Telerik team