I have a TextBox to enter a number. This is AutoPostBack=true and calls NumberOfFiles_Change to dynamically create a TextBox. On submit, I want to get the TextBox.Text. The TextBox is created correctly OnChange, but I can't get the value after submit. I
get the error Object reference not set to an instance of an object. on the Response.Write line. However, if I move the creation of the TextBox to Page_Load, it works fine. What am I doing wrong here?
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>BatchImportPre Generator</title>
</head>
<body>
<form id="form1" runat="server">
<div>
Number of Files:
...
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