How Get Fist Value Of Tabale

Open A Second Connection When The Fist Fail

Hi, I have a web apllication using asp.net, I have two connectionstrings (cadenaCon and cadenaCon2) in web.config.
<connectionStrings>  <add connectionString="Server=SUNBOGW-MROMEROSQLEXPRESS;Database=ModulosWebkkk;UID=sa;PWD=martha;"  name="cadenaCon" providerName="System.Data.SqlClient" />  <add connectionString="Server=SUNBOGW-MROMEROSQLEXPRESS;Database=ModulosWeb;UID=sa;PWD=martha;" name="cadenaCon_bak" providerName="System.Data.SqlClient" /></connectionStrings>In the class file I have this sub and it works well
Public Sub New()         conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon").ConnectionString.ToString)End Sub
My problem is I like to try to connect with cadenaCon and if this connection fails use the other. I used a try but it don´t work,
Public Sub New()   Try      conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon").ConnectionString.ToString)   Catch ex As Exception       Throw New Exception(ex.Message)        conexion = New SqlConnection(ConfigurationManager.ConnectionStrings("cadenaCon_bak").ConnectionString.ToString)   Finally   End TryEnd Sub
Please I aprecitate a sugestion. Thanks 
Martha