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Asked by DerekWatling in Programming for ASP.NET
I have a page with a update information form that needs to record who updated the record. The site is subscription only so users have to login. There are 2 types of users "Agent" (subscriber) and "Admin" (office staff). Sometimes the agents fax or email us the information to update in the office. If an agent updates online I want to record their details and if an Admin user updates on their behalf the form then displays an additional DropDownList of agents so they can select who submitted the information.
I have created a UserControl for the AgentDropDownList. It is inside a Table for layout purposes. I have tried various combinations of "Enabled" and "Visible" on the Table as well as placing the Table in an "If" block on the .aspx page. However when I trace through the code to see what will be written to the database I see that with a Agent login (UserControl not rendered on the page) it picks up the value of the first entry in the UserControl rather than from the login information. This makes me think that on the server the control is still being executed and the database is being hit unnecessarily?
In the code snippet the .aspx.vb code always gets the value from the Try statement and never gets into the Catch, even when the Control is not being rendered.
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.aspx
----------------------------------------------------------------
<%If Session("Admin") Then%>
<asp:Table ID="tblFHReportedBy" runat="server">
<asp:TableRow>
<asp:TableCell CssClass="H1">Reported By:</asp:TableCell>
</asp:TableRow>
<asp:TableRow>
<asp:TableCell CssClass="Agent"><cma:AgentDropDownList ID="ddlAgent" runat="server" /></asp:TableCell>
</asp:TableRow>
</asp:Table>
<%End If%>
.aspx.vb
----------------------------------------------------------------
Try
CMACommand.Parameters.AddWithValue("?_CustomerID", CType(ddlAgent.Selected, Integer))
Catch
CMACommand.Parameters.AddWithValue("?_CustomerID", CType(Session("CustomerID"), Integer))
End Try
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20091111-EE-VQP-91 / EE_QW_2_20070628
