Issues w/Master Pages?

I'm pretty new to web programming and I've been told that if this is what I want to do....I should use MP's and not Frames/IFrames. So, I'm trying to use them and finding it a little difficult. My understanding is that a MP can contain controls that appear whenever any other Content Pages are in view. So, I have added an asp:Menu control to my MP. Each menu item references a CP. What's weird is, when I click a menuItem, I retrieve a CP using the "Response.Redirect" command. However, even though it will load my CP, it will throw an unseen exception - "Unable to evaluate expression". Why is it doing that and even moreso, what's the correct way to call a CP?

Thanks,

Hello,

Can you show the code that you are using?

Bottom line is, you simply call the Content Page. :)

Let's say you have Default.aspx, Login.aspx and Register.aspx. Each of these content pages references the Master Page (which you never actually call) and in doing that, each of them will show the Menu with is contained within the Master Pages markup.

From there, you Menu items simply need to do a Response.Redirect to Default.aspx, Login.aspx and Register.aspx.

Or, better still, don't do that code yourself. Create a web.sitemap file, and add a SiteMapDataSource to your page, and point the Menu Control at the SiteMapDataSource and it will handle it all for you.

Gary

Gary,

Here is the code that is in my MP. This is what controls calling my CP's.

Code:

---

    Private Sub Menu1_MenuItemClick(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.MenuEventArgs) Handles Menu1.MenuItemClick
        Try
            Select Case e.Item.Value
                Case "mnuCustomerMaintenance"
                    Response.Redirect("~/Customer/Customer.aspx")
                Case "mnuViewCustomers"
                    Session("disableButtons") = True
                    Response.Redirect("~/Customer/Customer.aspx")
                Case "mnuLookupTable"
                    Response.Redirect("~/Admin/LookUp.aspx")
                Case "mnuEmployees"
                    Response.Redirect("~/Employee/Employee.aspx")
                Case "mnuSystemSettings"
                Case "mnuPrinterSetup"
                Case "mnuPrint"
                Case "mnuCustomerMaintenance"
                Case "mnuViewCustomers"
                Case "mnuInventoryMaintenance"
                    Response.Redirect("~/Inventory/Inventory.aspx")
                Case "mnuViewInventory"
                    Response.Redirect("~/Inventory/Inventory.aspx")
                Case "mnuReceiveInventory"
                Case "mnuAdjustLevels"
                Case "mnuVendorMaintenance"
                    Response.Redirect("~/Vendors/Vendors.aspx")
                Case "mnuViewVendors"
                    Response.Redirect("~/Vendors/Vendors.aspx")
                Case "mnuInvoiceMaintenance"
                    Response.Redirect("~/Invoicing/InvoiceMaintenance.aspx")
                Case "mnuViewInvoices"
                Case "mnuChangePassword"
                    Response.Redirect("~/Admin/ResetPassword.aspx")
                Case "mnuPrintInvoices"
                Case "mnuReportCustomerMasterListing"
                Case "mnuInventoryMasterListing"
                Case "mnuReportInventoryOutofStock"
                Case "mnuReportInventoryPriceList"
                Case "mnuReportVendorMasterListing"
                Case "mnuReportINvoicingHistoryAging"
                Case "mnuLogin"
                    Response.Redirect("~/Admin/SysLogin.aspx")
            End Select

        Catch ex As Exception
            lblMessage.Text = dbIO.DisplayError("Menu1_MenuItemClick()", "SiteMP", ex.Message)
        End Try
    End Sub

---

Hey,

Ah, ok, you are wrapped in a Try/Catch.

Try using the second parameter of the Response.Redirect method:

http://msdn.microsoft.com/en-us/library/a8wa7sdt.aspx

Gary

Which line throws that error?