I wrote a very simple application in vb.net which just formats
data (fetched by a query) and show them in Datagrid.
I used Sqlclient classes (SqlConnection,SqlDataAdapter etc) and
the program looks to work perfectly in a stand alone Pc. When I tried
to run in a network (I put the DataBase in the Server and the application in a WorkStation with XP Windows) the following message
raised (formatted by a procedure):
 From : mscorlib
 Message : Requestfor the permission of type
           System.data.SqlClient.SqlclientPermission,
           System.data,Version 1.0.5000.0
           Culture = Neutral, Public Key Token=b77a5c561934e089 failed

Has anyone idea of this ?

          Thanks a lot
             Zoro

How are you connecting to the database; are you using Integrated Security or supplying a username/password?

Something to try would be, when you are within the Visual Studio IDE, open up server explorer, add/find the computer with the database server on it and drag a new connection onto a windows form. Then get your conneciton string from here and see if you still get the same error

To resolve this issue you should go to COntrol Panel => Admin Tools => .Net Wizards and adjust .Net security for "Intranet" to full trust and it will work.

Regards

Is there a way to ask for permissions to run through code?

I found and excellent blog on this topic:
http://blogs.msdn.com/shawnfa/archiv.../20/57023.aspx