problem with FindControl

[Terry]

Hi,

i want to access control "TextBox1" embedded in another control "LoginView1 "
in order to change the 'Text' of the textbox.

Therefore i use 'FindControl' method but i get error:
"Object reference not set to an instance of an object" on line: tb =
lv.FindControl( "textbox1")
Thanks for help
Cliff
aspx:
----
<asp:Content ID="Content1" ContentPlaceHol derID="ContentP laceHolder1"
Runat="Server">
<table>
<asp:LoginVie w ID="LoginView1 " runat="server">
<LoggedInTempla te>
<fieldset style="height: 425px; width: 335px;">
<tr><td>
<asp:TextBox ID="TextBox1" runat="server" Text=""></asp:TextBox>
</td></tr>
</fieldset>
</LoggedInTemplat e>
</asp:LoginView>
</table>
</asp:Content>

code-behind:
-----------
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArg s)
Handles Me.Load
Dim lv As LoginView
Dim tb As TextBox
lv = FindControl("lo ginview1")
tb = lv.FindControl( "textbox1")
tb.Text = "ok"
end sub

[Teemu Keiski]

If you are running this on the content page, you don't need tom FindControl
the LoginView. You can just

Dim tb As TextBox
tb = Me.LoginView1.F indControl("tex tbox1")
tb.Text = "ok"

--
Teemu Keiski
AspInsider, ASP.NET MVP
http://blogs.aspadvice.com/joteke
http://teemukeiski.net

"Terry" <[e-mail] e in message
news:eU******** ******@TK2MSFTN GP04.phx.gbl...

Hi,

i want to access control "TextBox1" embedded in another control
"LoginView1 " in order to change the 'Text' of the textbox.

Therefore i use 'FindControl' method but i get error:
"Object reference not set to an instance of an object" on line: tb =
lv.FindControl( "textbox1")
Thanks for help
Cliff
aspx:
----
<asp:Content ID="Content1" ContentPlaceHol derID="ContentP laceHolder1"
Runat="Server">
<table>
<asp:LoginVie w ID="LoginView1 " runat="server">
<LoggedInTempla te>
<fieldset style="height: 425px; width: 335px;">
<tr><td>
<asp:TextBox ID="TextBox1" runat="server" Text=""></asp:TextBox>
</td></tr>
</fieldset>
</LoggedInTemplat e>
</asp:LoginView>
</table>
</asp:Content>

code-behind:
-----------
Private Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArg s)
Handles Me.Load
Dim lv As LoginView
Dim tb As TextBox
lv = FindControl("lo ginview1")
tb = lv.FindControl( "textbox1")
tb.Text = "ok"
end sub

[Terry]

Thanks, it works indeed ...
Maybe you can also help me with the other problem in the thread above "how
to trigger .."?

"Teemu Keiski" <jo****@aspalli ance.comschreef in bericht
news:F7******** *************** ***********@mic rosoft.com...

If you are running this on the content page, you don't need tom
FindControl the LoginView. You can just

Dim tb As TextBox
tb = Me.LoginView1.F indControl("tex tbox1")
tb.Text = "ok"

--
Teemu Keiski
AspInsider, ASP.NET MVP
http://blogs.aspadvice.com/joteke
http://teemukeiski.net

"Terry" <[e-mail] e in message
news:eU******** ******@TK2MSFTN GP04.phx.gbl...

>Hi,

i want to access control "TextBox1" embedded in another control
"LoginView1 " in order to change the 'Text' of the textbox.

Therefore i use 'FindControl' method but i get error:
"Object reference not set to an instance of an object" on line: tb =
lv.FindControl ("textbox1")
Thanks for help
Cliff
aspx:
----
<asp:Content ID="Content1" ContentPlaceHol derID="ContentP laceHolder1"
Runat="Server" >
<table>
<asp:LoginVi ew ID="LoginView1 " runat="server">
<LoggedInTempl ate>
<fieldset style="height: 425px; width: 335px;">
<tr><td>
<asp:TextBox ID="TextBox1" runat="server" Text=""></asp:TextBox>
</td></tr>
</fieldset>
</LoggedInTemplat e>
</asp:LoginView>
</table>
</asp:Content>

code-behind:
-----------
Private Sub Page_Load(ByVal sender As Object, ByVal e As
System.EventAr gs) Handles Me.Load
Dim lv As LoginView
Dim tb As TextBox
lv = FindControl("lo ginview1")
tb = lv.FindControl( "textbox1")
tb.Text = "ok"
end sub