Report does not know where the data is coming from. To display a watermark based on the required condition, I can suggest these approaches:
1. Add watermark at run-time using the provided Reporting API, an example can be found in Watermarks
help article. After report was modified, it can be wrapped into InstanceReportSource
for passing to report viewers or ReportProcessor.
2. Use expression
to set the value of Watermark.Text or Watermark.Image property. Expression can return the value based on the value of report parameter
. To update the value of report parameter from the calling application, you can use Parameters
collection of ReportSource object.
I hope this information will help.
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