BUG: An "Object reference not set to an instance of an object" error occurs when you try to access data by using ADO Interop on an ASP.NET page

Steps to Reproduce the Behavior

1. Create a new Microsoft Visual C# project named ADORefError. By default, WebForm1.aspx appears.
2. On the Project menu, click Add Reference.
3. On the .NET tab, select adodb from the drop-down list.
4. Click Select, and then click OK.
5. Drag a Label control from the toolbox to WebForm1.aspx.
6. In Solution Explorer, right-click WebForm1.aspx, and then click View Code.
7. Paste the following code in the Page_Load event:
   
   Note You must change the User Id <user name> value to an account that has the appropriate permissions to perform these operations on the database.

   //Create ADODB Objects
   ADODB.Connection oConn = new ADODB.ConnectionClass();
   ADODB.Recordset oRS = new ADODB.RecordsetClass();
   
   //Change Connection String depending on your SQL Server 
   string strConn = "Provider=SQLOLEDB.1;Persist Security Info=False;User ID=<username>;Initial Catalog=pubs;Data Source=Your SQLServer Name";
   
   oConn.Open(strConn,"","",0);
   object objRecs = 100;
   oRS = oConn.Execute("select au_Id, au_lname from authors", out objRecs,0);
   
   //Error is generated by referencing the Fields collection
   Label1.Text = oRS.Fields["au_id"].Value.ToString();
   
   //Close all connections
   oRS.Close();
   oConn.Close();
   
   //Release COM Objects
   oRS = null;
   oConn = null;
   
   

8. Copy Adodb.dll (from the C:\Program Files\Microsoft.NET\Primary Interop Assemblies\ folder) to the Bin folder of the ADORefError application.
9. On the Build menu, click Build Solution.
10. Start Microsoft Internet Explorer, and then browse to WebForm1.aspx by specifying the following URL, where
    IISServerName is the name of your Microsoft Internet Information Services (IIS) server:
    http://IISServerName/ADORefError/WebForm1.aspx
11. Identify a test computer that has the .NET Framework installed (without Microsoft Visual Studio .NET). In IIS, create two virtual directories and name them Test1 and Test2.
12. Create two identical sites: from the ADORefError folder, copy WebForm1.aspx and the Bin folder to the Test1 and Test2 folders on the test computer.
13. Start Microsoft Internet Explorer and browse to WebForm1.aspx of Test1 site by specifying the following URL, where
    IISServerName is the name of your Microsoft Internet Information Services (IIS) server:
    http://IISServerName/Test1/WebForm1.aspx
14. Start another instance of Microsoft Internet Explorer and browse to WebForm1.aspx of Test2 site by specifying the following URL:
    http://IISServerName/Test2/WebForm1.aspx
15. When you access WebForm1.aspx of Test2, you receive the error message as detailed in the SYMPTOMS section.