How to set the parameter in Web API Controller

Use the OnReportLoaded method to set parameter default value in the Web API controller.

[NonAction]
public void OnReportLoaded(ReportViewerOptions reportOption)
{
    List<BoldReports.Web.ReportParameter> userParameters = new List<BoldReports.Web.ReportParameter>();
    userParameters.Add(new BoldReports.Web.ReportParameter()
    {
        Name = "SalesOrderNumber",
        Values = new List<string>() { "SO50756" }
    });
    reportOption.ReportModel.Parameters = userParameters;
}

You can find the following help documentation for how to set the parameter at client side in various platforms.

• Angular

• React

• Java Script

• ASP.NET Core

• ASP.NET MVC

• ASP.NET Webforms