Can't add a report to ReportBook after building Report Library

[ciccio]

Hi,
here the problem:
I create a Report and i test it by a winfrom it work fine. If i modify this report adding some code getting data form my DataLayer and i compile it all still  run fine, but the design of my win form (in design time) show me  an error

1- I create 2 class in report  library

 

 

 

 

public class mCubeDistrXday
    {
        public int cont { get; set; }
        public string cardType{ get; set; }
        public string Country{ get; set; }
        public string na { get; set; }
        public DateTime ? date { get; set; }
    }

public  class lstCubeDistrXday : List<mCubeDistrXday>
    {

     }

2- I create a Table Report (with WIzard)
the datasource is lstCubeDistrXday collection.

3-I create a report by wizard
-As datasource type i set the  ObjectDataSource one.
-I bind it to my DataLayer Library and i set a method  as datamemeber (let say...getMyItemsFromDB) My DL library is referncede in Reprto Library
-The wizard let me choice the fields to put in table report.
-Finally i have A table report with all my filed

4- I write some code to populate the collection (i want tesst it wit a hardcoded collection first, so i dont yet get data from DL):

private List<Model.mCubeDistrXday> myItemList = new List<mCubeDistrXday>();

       public Report8() {   

            InitializeComponent();             

            mCubeDistrXday i = new mCubeDistrXday();

            i.cont=10;

            i.data=new DateTime(2011,02,02);

            i.na="";

            i.cardType="OPE";

            i.country= "ITA";

  

             myItemList.Add(i);

            i = new mCubeDistrXday();

            i.cont = 10;

            i.data = new DateTime(2011, 02, 02);

            i.na = "";

            i.cardType= "OPE";

            i.country= "EXT";

  

            myItemList.Add(i);  

  

     var selectqry =

      from t in myItemList 
        where t.nazione != null && t.tipoTessera != null && t.data != null

      select new { nazione = t.nazione, tipoTessera = t.tipoTessera, cont = t.cont, data = t.data, na = t.nazione == "ITA" ? "ITA" : "EXT" };

    
    this.objectDataSource1.DataSource = selectqry;

}

4-I add a winForm project to my solution  to debug the report  the report
on the form i add a reportViewer then a ReportBook i ad my report to Rport book and finally i set hte property report to report81 (it is my report)
ALL WORK FINE and i See my data in my report

Now  i try to binf me DataLayer, just a little change:

public partial class Report8 : Telerik.Reporting.Report

   {

       

       private DataObjectsSE.IDbStat.IDbStatDao daoDbStat = DataObjectsSE.DataAccess.dbStatDao;

       public Report7() {

           //

           // Required for telerik Reporting designer support

           //

           InitializeComponent();

   
    var selectqry =

         from t in daoDbStat.getCubeTipoTesseraDataNazione("MyParam")  

         where t.nazione != null && t.tipoTessera != null && t.data != null

         select new { nazione = t.nazione, tipoTessera = t.tipoTessera, cont = t.cont, data = t.data, na = t.nazione == "ITA" ? "ITA" : "EXT" };

           this.objectDataSource1.DataSource = selectqry;

}

I compile the report Library and i launch the winForm project to see the report.

ALL WORK FINE. i can see my Data.
But i have a problem:  at design time the WINFORM can't display and shows me  the following message:

The variable 'report71' is either undeclared or was never assigned.   Instances of this error (2) 1. Show Call Stack at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.Error(IDesignerSerializationManager manager, String exceptionText, String helpLink) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression) 2. Show Call Stack at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.Error(IDesignerSerializationManager manager, String exceptionText, String helpLink) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeExpression(IDesignerSerializationManager manager, String name, CodeExpression expression) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializePropertyAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement, CodePropertyReferenceExpression propertyReferenceEx, Boolean reportError) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeAssignStatement(IDesignerSerializationManager manager, CodeAssignStatement statement) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement)   Help with this error MSDN Help   Forum posts about this error Search the MSDN Forums for posts related to this error PLease, any Idea?