VS 2010 Bug ! MS ReportViewer with Nested Objects Data Sources

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There is a big bug in Visual Studio 2010 if you use MS ReportViewer and .rdlc file with Nested Objects Data Sources.

In old VS version , the Nested Objects data source worked. Just read this article first:

Sample on ReportViewer controls with Object data sources containing nested objects

Tudortr made it worked in 2006:

For example, Here we have a class:

    public class HUser 
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
    }

    public class AnalogReportObj
    {
        public int PointNumber { get; set; }
        public HUser ManUser { get; set; }
    }

then you can use "=Fields!AnalogReportObj.ManUser.Value.LastName" in .RDLC file textbox to get nested object value . But in Visual Studio 2010, the above syntax to access nested properties no longer works. Microsoft stuff said they will fix this bug in VS 2010 SP1.

Microsoft HotFix:

Accessing Nested Objects in Data Source of Local Report Does Not Function

Brian Hartman's Report Viewer Blog: Nested Objects in Local Mode

For old version, some friend had his experience if doesn't work:

Microsoft reports nested object datasource gives #Error