In ReportDesigner preview i receive an error when trying to preview the report; it states "Collection class or datatable Input is needed |
The mentioned message shows when the data collection not returned for the DatasetInfo configuration provided in the report, it can be due to the classes not added to the sample or namespace changes. Add the class to report designer sample with same namespace, which is created in report viewer application to run the report, also you need to add the executing assembly in “Assemblies” collection as shown in below code.
ReportDesignerControl.Assemblies.Add(Assembly.GetExecutingAssembly());
If you still face the problem then share your runnable sample with us to validate and provide the solution. |
i have get same error message in sample i found on this forum |
The shared application in this forum renders the report without any errors, refer to the below link for output snap.
Can you update the Syncfusion.ReportDesigner.WPF.dll assembly version used in your application? |