Binding Render Output To ReportViewer Control?

I'm trying to take the output of the Render method and bind it to the ReportViewer control. First of all, is this possible? If so, what is the best way to render the report (format: XML,CSV, NULL, etc), and then how to I 'bind' the result to the control?

I'm proving some code to demonstrate how I'm rendering the report:
...
string format = "XML";
string devInfo = @"<DeviceInfo><Toolbar>False</Toolbar></DeviceInfo>";
ReportExecutionService rs = new ReportExecutionService();
ExecutionInfo execInfo = new ExecutionInfo();
ExecutionHeader execHeader = new ExecutionHeader();
byte[] result= null;

rs.ExecutionHeaderValue = execHeader;
execInfo = rs.LoadReport(path, null);
string SessionId = rs.ExecutionHeaderValue.ExecutionID;
result = rs.Render(format, devInfo, out extension, out encoding, out mimeType, out warnings, out streamIDs);


Thanks, any help would be greatly appreciated.
Peter