Help, going nuts - setting text property of a textbox in a user control

[accelerator]

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Oh dear, it's getting late and I am having problems setting the text property of a TextBox contained within a user control in vb.net:

I have written a .ascx user control which includes the following TextBox:

<asp:TextBox ID="ProductId" runat="server" Visible="false" />

This user control is included on another page, let's say nokia-n95.aspx. The problem is I want to set the Text property of the above TextBox from that page. So far, I've tried in nokia-n95.aspx:

Sub PageLoad()
ProductId.Text = "23"
End Sub

but the value isn't getting carried through to the user control and is appearing as "".

I guess this is something to do with the scope of variables and them getting carried into user controls?

Can anyone help?

Many thanks

Accelerator

[haggul]

First off are you setting the Visible property back to on at any stage?

Secondly - best way to pass into a user control is to create properties in the user control and then you can refer to them in the code of the main page such as :

Me.UserControl.ProductID = "1234"

Then in the Page_Load event of the user control have some code that picks up the value of the variable behind the property and stuffs it in the text box.

[accelerator]

Thanks for your help haggul, I have this working in the way I want it to now, although whether this is technically best practice I'm not sure ....

In the .aspx page, the user control instance has a PageProductId property:

<navito:reviewbuttons id="reviewbuttons1" runat="server" PageProductId="23" />

within the .ascx user control I have the following Property accessor:

<script runat="server">

Public _PageProductId As String

Public Property PageProductId() As String


Get
Return _PageProductId
End Get

Set(ByVal value As String)
ProductId.Text = value
End Set

End Property

</script>

....

which sets the Text property of the following TextBox in the user control:

<asp:TextBox ID="ProductId" runat="server" Visible="false" />


So, now I can define the ProductId in the original .aspx page.

Thanks again.


Rgds

Accelerator

[jonsp]

for what it's worth you can also address the textbox in the user control from your .aspx page like this
Dim t As TextBox = YourUserControl.FindControl("YourTextBox")
then set it's text property
t.text="something"

Jon

[haggul]

Yeah that also works I just find it easier to expsose things as properties - each to their own I guess!!

You can actually make the variable _PageProductId Private in the ascx as it's only used internally to the user control.

And you can obviously programatically control what is passed from your code behind your main page (I see you hard coded in the user control declaration which might cover what you want in this instance) - if you are using VWD or VS then intellisense will even pop up with the properties and methods you have defined yourself.

Have you done much .Net? I'm actually working on my first full blown project which is a redevelopment of a pretty in depth e-Comm site - baptism of fire or what!! Luckily I have done other OOP stuff in the past. Biggest problem is there are almost too many ways to solve problems.