.NET Report (rdlc) using image physically

1. In file of Report(rdlc), in value, choose expression
2. Fill expression with the path of image file as follow : ="file://C:/My Pictures/DSC00528.jpg"
3. In form which reportViewer is in it, add follow code before Refresh report :
Me.ReportViewer1.LocalReport.EnableExternalImages = True
Me.ReportViewer1.RefreshReport()
4. Finish.

You can change the path by field so the report can show image dinamically.
Don't forget to the expression must begin with "file://" and suing slash instead of backslash.

Hope this will help you