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>
1. | Open Sql connection (VB.net) | ||
2. | Catch data binding exception (VB.net) | ||
3. | Display of Data in a Table (Grid) Using SQL Objects (VB.net) | ||
4. | Setup SqlConnection (C#) |