Pass Multiple DataSets to Single SSRS (RDLC) Report in Windows Application

You will have to merge the datasets into one and then assign to the report

Merging Datasets

Thank U, for the suggestion, any alternate is there solution? or how to make them seperate while displaying in reportviewer?

Then you need to create separate sub reports and populate them individually

Oh ! then kindly guide me to assign seperate datasets for main report and sub report.

Refer

SSRS – Creating a subreport and managing multiple subreports