Sort RDLC report viewer using Expression in ASP.Net

Hi Faizal,

Please refer below step to perform sorting column in rdlc report.

1. Right-click a column heading , and select properties to open the Textbox Properties dialog box.
2. Click the Interactive Sort tab.
3. Select Add an interactive sort action to this text box.
4. To specify a sort expression, select the field that corresponds to the column for which you are defining a sor.
5. Click OK.

Please refer below link for your reference-

https://docs.microsoft.com/en-us/sql/reporting-services/report-design/filter-group-and-sort-data-report-builder-and-ssrs?view=sql-server-2017