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After 16 hours of frustration, I've managed to solve this problem for a
project I'm working on.

The 'trick' is set EnableViewState="False" for the asp:textbox inside
the Repeater control.

The problem is that by default the asp:textbox ViewState is True. This
means that the textbox value is automatically preserved between
postback (saved in the __VIEWSTATE hidden field and restored during a
page postback).

If EnableViewState="True", the FindControl finds a 'copy'
of the asp:textbox control with it's initial value; not the postback
value. The postback value (whatever you type in the textbox AFTER the
page has loaded seems to get overridden because there is already a
control in memory with your texbox name). In my case FindControl
returns the Text property of the textbox as "".

Anyway, here's the solution:

--------------------
-------------------- ASPX
--------------------
<asp:Repeater
ID="Repeater1"
EnableViewState="False"
runat="server">

<ItemTemplate>

<asp:TextBox
ID="txtFirstName"
runat="server"/>

</ItemTemplate>

</asp:Repeater>

--------------------
-------------------- C#
--------------------
foreach (RepeaterItem item in Repeater1.Items)
{
Response.Write( ((TextBox)item.Controls[1]).Text);
}

-------------------- OR

foreach (RepeaterItem item in Repeater1.Items)
{
TextBox FirstName = (TextBox)item.FindControl("txtFirstName");
Response.Write(FirstName.Text);
}

I'm using Visual Web Developer 2005 Express Edition Beta running .NET
version 2_0_50215 on Windows 2000 Professional.

Hope this helps,
Bill


08.16.2005

[sanda]

Just want to say, 5 years later, this post still helps me tremendously. Got stuck on the same issue for textbox inside repeater and this one clears it all.

Thanks again.

[JohnnyC]

I realize that I'm 6 years too late, but I just want to say that this post assisted me to solve the exact same problem. I only wish that I have found this earlier (2 days ago).

Cheers JohnnyC