If I understood correctly, you would like to set the value of the report parameter through the report's constructor. Note that the report needs to have a parameterless constructor in order to be opened in the Visual Studio designer or passed to the TypeReportSource.
If you need to pass the parameter in the report constructor, you will have to wrap it in an InstanceReportSource when passing it to the Reporting engine. Note that we recommend to use Report with a parameterless constructor and pass the Report Parameter values through the Parameters collection of the Report Source.
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