Hello,
I am trying to set up a panel that appears on a page that prompts a user
to enter in a note. This panel object is initially invisable and appears
when the user clicks on a button. Contained within the panel are a couple
of buttons and a textbox. Code is as follows:
ASPX page:
---------
<%@ Page Language="VB" Inherits="CustProfile" Src="CustProfile.vb"
autoeventwireup="False" %>
<html>
<form>
....
<td align="middle">
<asp:Button id="btnAddNote" runat="server" Text="Add New
Note"></asp:Button>
</td>
....
<asp:Panel id="pnlAddNote" style="BORDER-RIGHT: black 1px solid; BORDER-TOP:
black 1px solid; Z-INDEX: 1; BACKGROUND: silver; LEFT: 210px; BORDER-LEFT:
black 1px solid; BORDER-BOTTOM: black 1px solid; POSITION: absolute; TOP:
265px" runat="server" Width="360px" Visible="False" HorizontalAlign="Left">
<p>
<strong>Add Note:</strong>
</p>
<p align="center">
<asp:TextBox id="txAddNote" runat="server" Columns="35"
AutoPostBack="True" Wrap="True" TextMode="MultiLine" Enabled="True"
Visible="True" Rows="4">Enter Note Here.</asp:TextBox>
</p>
<p align="center">
<asp:Button id="btnSaveNote" runat="server" Text="Save Note"
Enabled="True" Visible="True"></asp:Button>
<asp:Button id="btnCancelNote" runat="server" Text="Cancel"
Enabled="True" Visible="True"></asp:Button>
<br />
<br />
</p>
</asp:Panel>
....
</form>
</html>
VB code:
-------
Imports ...
Public Class CustProfile
'For PostBack
Inherits Page
Protected txtAddNote as TextBox
Protected pnlAddNote as Panel
Protected WithEvents btnAddNote as Button
....
Private Sub btnAddNote_Click(source as Object, e as EventArgs) Handles
btnAddNote.Click
txtAddNote.Text = ""
pnlAddNote.Visible = True
End Sub
....
End Class
And this is the error message I get which makes no sense to me because the
object is declared and exists in both files.
Browser Msg:
-----------
Exception Details: System.NullReferenceException: Object reference not set
to an instance of an object.
Source Error:
Line 422:
Line 423: Private Sub btnAddNote_Click(source as Object, e as EventArgs)
Handles btnAddNote.Click
Line 424: txtAddNote.Text = ""
Line 425: pnlAddNote.Visible = True
Line 426: End Sub
Source File: C:\Inetpub\wwwroot\incident\cust\CustProfile.vb Line: 424
If anyone can shed some light on this subject (namely point out what I'm
doing wrong) it would be greatly appreciated.
A. Nonymous (slightly dazed and confused)
