Question

This is my VB code for global.asax

<%@ Application Language="VB">
<script runat="server">

Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs on application startup
    Application("CS") = "server=myServer; user id=myUser; password=MyPaas; database=myData; pooling=true"
End Sub

Sub Application_End(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs on application shutdown
    Application("CS") = ""

End Sub

Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs when an unhandled error occurs
End Sub

Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs when a new session is started
End Sub

Sub Session_End(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs when a session ends.
    ' Note: The Session_End event is raised only when the sessionstate mode
    ' is set to InProc in the Web.config file. If session mode is set to StateServer
    ' or SQLServer, the event is not raised.
End Sub

</script>

I call this value in VB like this:
Dim objConn As New SqlConnection(Application("CS"))

How to do this call in C# ASP.NET?

Answer 1

The equivalent C# code would be:

SqlConnection objConn = new SqlConnection(Application["CS"]);

Note the [] around “CS” instead of the ().

Alternatively, you could do it in a using block:

using (SqlConnection objConn = new SqlConnection(Application["CS"]))
{

    // Do your data access here
}

The using block ensures that dispose is called (even if an exception is encountered). For more information on the using statement, see using Statement (C# Reference).

Though I wonder – why are you using C# with a Global.asax file that’s written in VB.NET?