Stringa connessione per gridview

[victor8872]

Ciao a tutti
mi dareste una mano?

ho questo

Sub BindGrid()

Dim strConnString As String = ConfigurationManager.ConnectionStrings("constr").C onnectionString


Using con As New SqlConnection(strConnString)
Using cmd As New SqlCommand(" select * from fogli_global where nome like '%"& request.QueryString("cod") &"%' order by uno asc ")
Using sda As New SqlDataAdapter()
cmd.Connection = con
sda.SelectCommand = cmd
Using dt As New DataTable()
sda.Fill(dt)
GridView1.DataSource = dt
GridView1.DataBind()
End Using
End Using
End Using
End Using
End Sub

la connessione
constr

richiama una connessione dentro il web config
mi dareste un web confing con una connessione per gridview

continuo a trovare errori grazie

[supermac]

Connectionstring basica che fa connessione a DB SQL

 <configuration>
<connectionStrings>
<add name="NomeDellaConnessione" connectionString="Data Source=SERVER;User ID=sa;Password=pwd;Initial Catalog=DATABASE" providerName="System.Data.SqlClient" /> 
....