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In My Project i have text-box which is enabled ,i set popup calender when i click on button and it goes post-back it clear textbox value

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" Title="Untitled Page" %>

<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:TextBox ID="TextBox1" runat="server" Enabled="False" ReadOnly="True"></asp:TextBox>
    <cc1:CalendarExtender ID="TextBox1_CalendarExtender" runat="server"
        Enabled="True" PopupButtonID="Button2" TargetControlID="TextBox1">
    <asp:Button ID="Button2" runat="server" Height="25px" Text="+"
        Width="39px" />
    <br />
    <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="add" />
Updated 14-Feb-14 0:40am
King Fisher 14-Feb-14 6:42am
Why did you 'Enabled="False" '
dhiraj mane 17-Feb-14 3:06am
b'caz no one can change value

If a control is disabled it cannot be edited and its content is excluded when the form is submitted.

If a control is readonly it cannot be edited, but its content (if any) is still included with the submission.

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