A page can have only one server side form tag error

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Hi,
I am new in .Net programming,so kindly please help me on below.

Thanks in Advance.

This is my Default Page:

XML

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


<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">

    <style type="text/css">
        .style1
        {
            width: 100%;
            border: 6px solid #FFFFCC;
            background-color: #FFFFCC;
        }
        .style2
        {
            width: 228px;
        }
    </style>

</asp:Content>
<asp:Content ID="Content2" runat="Server" ContentPlaceHolderID="ContentPlaceHolder1" >
<form id="frm" runat="server">

    <p>
        &
    </p>
    <p>
        &
        <table class="style1">
            <tr>
                <td class="style2">
        
        <asp:Label ID="Label4" runat="server" Text="TO"></asp:Label>
                </td>
                <td>

        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

        <asp:TextBox ID="TextBox1" runat="server" Width="222px"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td class="style2">
        
        <asp:Label ID="Label5" runat="server" Text="Subject"></asp:Label>
                </td>
                <td>

 <asp:TextBox ID="TextBox2" runat="server" Width="223px"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td class="style2">
        
        <asp:Label ID="Label6" runat="server" Text="Message"></asp:Label>
                </td>
                <td>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:TextBox ID="TextBox3" runat="server" Height="97px" TextMode="MultiLine"
            Width="315px"></asp:TextBox>
                </td>
            </tr>
            <tr>
                <td class="style2">
                    
                    <asp:Label ID="Label7" runat="server" Text="Attachment"></asp:Label>
                </td>
                <td>
       &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
       <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox>
        <asp:Button ID="Button2" runat="server" Text="Browse" />
                </td>
            </tr>
            <tr>
                <td class="style2">
                    &nbsp;</td>
                <td>
                    &nbsp;</td>
            </tr>
            <tr>
                <td class="style2">
                    &nbsp;</td>
                <td>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Send" />
                </td>
            </tr>
        </table>
        <br />
    </p>

    </form>
</asp:Content>

This is my master page that i copied it from another one:

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Manager.master.cs" Inherits="Admin" %>

<!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">
<title>Untitled Page</title>
<asp:ContentPlaceHolder id="head" runat="server">

</head>
<body alink="#ffffcc">
<form id="form1" runat="server">

style="font-size: xx-large; font-weight: bold; font-style: normal; color: #3399FF; background-color: #FFFFCC; height: 142px; width: 961px;">

Payroll Management System

<asp:Menu ID="Menu1" runat="server" BackColor="#B5C7DE"
DynamicHorizontalOffset="2" Font-Bold="True" Font-Names="Verdana"
Font-Size="0.8em" ForeColor="White" Height="21px" Orientation="Horizontal"
StaticSubMenuIndent="10px" Width="482px"
onmenuitemclick="Menu1_MenuItemClick">
<staticmenustyle backcolor="#0080C0">
<staticselectedstyle backcolor="#507CD1">
<staticmenuitemstyle horizontalpadding="5px" verticalpadding="2px">
<dynamichoverstyle backcolor="#284E98" forecolor="White">
<dynamicmenustyle backcolor="#B5C7DE">
<dynamicselectedstyle backcolor="#507CD1">
<dynamicmenuitemstyle horizontalpadding="5px" verticalpadding="2px">
<statichoverstyle backcolor="#284E98" forecolor="White">
<items>
<asp:MenuItem Text="Home" Value="Home">
<asp:MenuItem Text="Employees" Value="Employees">
<asp:MenuItem NavigateUrl="~/Employee list.aspx" Text="Employee List"
Value="Employee List">

<asp:MenuItem Text="Messages" Value="Messages">
<asp:MenuItem Text="Compose Mail" Value="Compose Mail">
<asp:MenuItem Text="Inbox" Value="Inbox">
<asp:MenuItem Text="Outbox" Value="Outbox">

<asp:MenuItem Text="Payslip" Value="Payslip">
<asp:MenuItem Text="Employee Payslip" Value="Employee Payslip">
<asp:MenuItem Text="Genrate Payslip" Value="Genrate Payslip">

<asp:MenuItem Text="Log Out" Value="Log Out">

</form>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">

</body>
</html>

Posted 12-Oct-13 10:50am

Member 9986786

Updated 12-Oct-13 22:35pm

JoCodes

v3

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JoCodes 13-Oct-13 4:22am

Please format and post your code since its not easily readable .

2 solutions

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Prince Tegaton · Answer 1 · 2013-10-12T11:36:00

Solution 1

Your question is not well formatted.
This error came up because you tried to add a form to a content page relying on a master page.
Once you have a form in master page you cant add any other form to individual content page relying on it..

Posted 12-Oct-13 11:36am

Prince Tegaton

JoCodes · Answer 2 · 2013-10-12T22:17:00

Solution 2

Only one form element is allowed in a page even if we are using a combination of master page and content page. You can remove tag from the child page since already your master page contains the form tag and it will work .

Posted 12-Oct-13 22:17pm

JoCodes

Updated 12-Oct-13 22:20pm

v3