Yes, You can provide it a StringReader object using LoadReportDefinition like so,
private void Page_Load(object sender, System.EventArgs e)
{
NMBS.ViewModels.ViewModelReport Report = (Session["CurrentReport"] as NMBS.ViewModels.ViewModelReport);
ReportViewer.ProcessingMode = ProcessingMode.Local;
ReportViewer.PageCountMode = PageCountMode.Actual;
// Set report specifics.
ReportViewer.LocalReport.DisplayName = Report.Name;
ReportViewer.LocalReport.LoadReportDefinition(new System.IO.StringReader(Report.Definition));
foreach (ReportParameter Param in Report.Parameters)
{
ReportViewer.LocalReport.SetParameters(Param);
}
foreach (ReportDataSource Rds in Report.Data)
{
//Load Report Data.
ReportViewer.LocalReport.DataSources.Add(Rds);
}
ReportViewer.CurrentPage = Report.CurrentPage;
ReportViewer.Width = Report.Width;
// Refresh the reports.
ReportViewer.LocalReport.Refresh();
}
Where Report.Defintion is the String containing the XML of the Report's Definition.