Use Trace to debug (VB.net) : Trace « Development « ASP.Net






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Use Trace to debug (VB.net)

<%@ Page Language="VB" Debug="true" Trace="true" %>
<%@ import Namespace="System.Data" %>
<%@ import Namespace="System.Data.Sqlclient" %>
<script runat="server">

    Sub Button1_Click(sender As Object, e As EventArgs)
      Trace.Write ("Click", "Start")
      Dim conn As New _
           SqlConnection("Server=foo;Database=pubs;Trusted_Connection=true") 
      Dim cmd As New SqlCommand("select * from authors", conn)

      Try
        Trace.Write("Opening connection")
        Conn.Open()

        DataGrid1.DataSource = cmd.ExecuteReader(CommandBehavior.CloseConnection)
        DataGrid1.DataBind()
      Catch ex As Exception
        Trace.Warn(ex.Message)
        Label1.Text = "Could not connect to the database - " & _
                      "please try again later."
      End Try
    End Sub

</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Button"></asp:Button>
        <asp:DataGrid id="DataGrid1" runat="server"></asp:DataGrid>
        <asp:Label id="Label1" runat="server">Label</asp:Label>
        <!-- Insert content here -->
    </form>
</body>
</html>








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