Winan,
I see no textboxes in the code above, but I do see multiple placeholders that may contribute to the problem.
>
>< % @ Master Language="C#" MasterPageFile="~/ParentMaster.master" AutoEventWireup="false" CodeFile="OneColumnMaster.master.cs" Inherits="OneColumnMaster" %>
>
><asp:Content ID="Content1" ContentPlaceHolderID="contentMain" Runat="Server">
> <asp:ScriptManager ID="ScriptManager1" runat="server" />
> <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
> </asp:ContentPlaceHolder>
> <asp:ContentPlaceHolder ID="oneColumnContent" runat="server">
>
> </asp:ContentPlaceHolder>
></asp:Content>
>
>< % @ Master Language="C#" AutoEventWireup="true" CodeFile="ParentMaster.master.cs" Inherits="ParentMaster" %>
><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
><html xmlns="http://www.w3.org/1999/xhtml">
><head runat="server">
> <link href="App_Themes/Simple/Default.css" rel="stylesheet" type="text/css" />
> <title>Parent Master Page</title>
> <style type="text/css">
> .style2
> {
> text-align: center;
> }
> .style3
> {
> font-size: xx-large;
> }
> </style>
></head>
><body>
> <form id="form1" runat="server">
> <div>
> <div id="Header" class="style3" style="background-color: #C0C0C0">
> Hello World</div>
> <div id="body">
> <hr />
> <br />
> <asp:ContentPlaceHolder id="contentMain" runat="server">
> </asp:ContentPlaceHolder>
> <br />
> <hr />
> </div>
> <div id="Footer" class="style2" style="background-color: #C0C0C0">
> @PAGE FOOTER
> </div>
> </div>
> </form>
></body>
></html>
>
If it's not broken, fix it until it is.
My Blog 
