Dear sirs,

I'm developing a web form that gathers information from users. Using Visual Web Developer (V.W.D) and S.S.E, I encountered two problems.
Guide me please:

1. I can not add SqlCommand and SqlConnection .NET Framework components, to my toolbox. These are neutral to checking/unchecking their checkboxes in the "choose toolbox items" window. Other tools (non-System.Data. SqlClient components) have no problem. What is the matter?

2. When I try to insert data to the database trough internet explorer (web form in Cassini), an error occurs. I set up all SSE features (Database Services & Client Components) and I changed the SSE default setting (Enabling TCP/IP and Named pipes + Restarting the service). But it still shows this:

An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (Provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

Source Error:
Line 27: objcommand.Parameters("@se").Value = RadioButtonList3.SelectedItem.Value
Line 28: objcommand.Parameters("@ch").Value = RadioButtonList4.SelectedItem.Value
Line 29: objconnection.Open()
Line 30: objcommand.ExecuteNonQuery()
Line 31: objconnection.Close()

Thanks a lot for your guidance