Cannot debug TSQL-SP from a ASP.Net or C# application with VS.NET 2005 SP1 on SQL-Server 2005

I have enabled SQL Server debugging on the Solution-Properties and set the
Application debugging property on my Data Connection.

System:
OS:  Windows 2003 Enterprise edition SP1,
IDE: VISUAL STUDIO 2005 With SP1 Beta,
DB:  SQL Server 2005 Developer Editon

Over the Server Explorer and my Connection I opened my Stored Procedure and
set a breakpoint.

When I step over my command calling the Stored procedure the Debugger didn’t
step into it. And the breakpoint on the procedure was disabled width the
following tooltip:

The Breakpoint will not currently be hit, Unable to bind SQL breakpoint at
this time, Object Containing the breakpoint not Loaded

It’s strange that I am able to debug stored procedure using step into. But I
have to debug the procedures from a ASP.NET C# application.

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I lost 3  day to solve this problem. 

Solution: 

The user you are using in your connection string must be a  SysAdmin account.

I changed my Connection String Property. 

By default I used Trusted Connection SSPI security. 

I changed it on standard security user SA and debugger works fine