How do I solve the error "The type 'MasterPage2' already contains a definition for 'head' "

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Hi,

Each time I build my MasterPage.master.aspx, I get an error that reads:

The type 'MasterPage2' already contains a definition for 'head'
This error appears for all the protected values in my MasterPage.master.cs file. How do I fix the error please?

Below is my MasterPage.master.aspx codes:

C#

<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage2" %>
<!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>
    <link href="css/Style.css" rel="stylesheet" type="text/css" media="all" />   
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1"  runat="server">
    <div id="container">
        <!--header starts -->
        <div id="header">
            <div id="logo">
                <img  src="~/Images/logo.gif" alt="logo"  runat="server" /></div>
            <div id="logoright">
                <div id="topbar1" style="float: right">
                    <div class="empty" style="padding-removed3px; padding-removed 10px; background: #f1f1f1; height: 25px">
                      <a id="A1" href="~/Agent_list.aspx"  runat="server">Agents</a>|  <a href="~/AboutUs.aspx"  runat="server">About Us</a>|  <a id="A2" href="~/Faq.aspx"  runat="server" >FAQ</a>|  <a id="A9" href="~/Feedback.aspx"  runat="server">Feedback</a>| 
                        <a href="~/contactus.aspx"  runat="server">Contact Us</a></div>
                    <div class="empty" style="background: #f1f1f1">
                    
                        <img height="25" alt="" src="~/Images/top_curve2.gif" width="32"   runat="server" /></div>
                    <div class="empty" style="width: auto; height: 25px; text-align: center">
                    </div>
                </div>
                <div class="empty" style="float: right; margin: 9px 0px 8px; ">
                    <img height="56" alt="" src="~/Images/paper.gif" width="286"   runat="server" /><asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" 
                            ShowStartingNode="False" />
                            </div>
                <div id="navigation"> 
                <div>
                <asp:Menu ID="MainMenu" runat="server" Orientation="Horizontal" MaximumDynamicDisplayLevels="0"
                DataSourceID="SiteMapDataSource1" DynamicEnableDefaultPopOutImage="False" StaticEnableDefaultPopOutImage="False">
                <StaticMenuStyle CssClass="menu" />
                <StaticMenuItemStyle CssClass="menuItem" />
                <StaticSelectedStyle CssClass="menuSelectedItem" />
                <DynamicMenuStyle CssClass="menuPopup" />
                <DynamicMenuItemStyle CssClass="menuPopupItem" Font-Strikeout="False" />
                <DynamicHoverStyle CssClass="menuPopupItem" />
                <StaticHoverStyle CssClass="menuItemHover" />
            </asp:Menu>
                </div>
            <div id="submenu"  runat="server">
            <ul id="submenulist">
            <li><a id="home" href="~/AdminArea/HomeForAdmin.aspx"  runat="server">Basic Info</a></li>
             <li><a id="A3" href="~/AdminArea/CreateAgent.aspx"  runat="server">Create Agent</a></li>
              <li><a id="A4" href="~/AdminArea/All_Agents_info.aspx"  runat="server">Agent List</a></li>
               <li><a id="A5" href="~/AdminArea/Deposit.aspx"  runat="server">Deposite</a></li>
               <li><a id="A6" href="~/AdminArea/Agent_search.aspx"  runat="server">Search Agent</a></li>
              <li><a id="A7" href="~/AdminArea/Bus_list.aspx"  runat="server">Bus List</a></li>
               <li><a id="A8" href="~/AdminArea/feedback_list.aspx"  runat="server">FeedBack List</a></li>
            </ul>
            </div>
             </div>
            </div>
        </div>
        <div>
            <table style="width: 100%;">
                <tr>
                    <td colspan="3">
                        <asp:ScriptManager ID="ScriptManager1" runat="server" />
                            <asp:UpdatePanel ID="up12" runat="server">
                            <ContentTemplate>
                                <table cellspacing="0" cellpadding="0" width="100%" border="0">
                                    <tbody>
                                        <tr>
                                            <td class="border-header" style="height: 25px;" valign="middle"
                                                align="left" width="600">
                                                Welcome <asp:LoginName ID="LoginName1" runat="server" />, Rs.<asp:Literal ID="litbal" runat="server" />
                                            </td>
                                            <td class="border-header-date" style="height: 25px" valign="middle" align="left"
                                                width="200">
                                                <asp:Literal ID="litdate" runat="server"></asp:Literal>
                                            </td>
                                        </tr>
                                    </tbody>
                                </table>
                            </ContentTemplate>
                        </asp:UpdatePanel>
                        <asp:ContentPlaceHolder ID="content1" runat="server">
                        </asp:ContentPlaceHolder>
                    </td>
                </tr>
                <tr>
                    <td colspan="3">
                        <asp:ContentPlaceHolder ID="ContentPlaceHolder2" runat="server">
                        </asp:ContentPlaceHolder>
                    </td>
                </tr>
                <tr>
                    <td colspan="3">
                        <asp:ContentPlaceHolder ID="ContentPlaceHolder3" runat="server">
                        </asp:ContentPlaceHolder>
                    </td>
                </tr>
                <tr>
                    <td colspan="3">
                        <asp:ContentPlaceHolder ID="ContentPlaceHolder4" runat="server">
                        </asp:ContentPlaceHolder>
                    </td>
                </tr>
                <tr>
                    <td>
                         
                    </td>
                    <td>
                         
                    </td>
                    <td>
                         
                    </td>
                </tr>
            </table>
        </div>
        
            <div id="footer">
                <div id="footerlinks">
                    <div style="float: left">
                       Copyright © 2010, All rights reserved   <span class="orange11">l</span>   <a href="~/Privacypolicy.aspx"   runat="server">Privacy policy</a>  <span class="orange11">
                            l</span>   <a href="~/TermsandConditions.aspx"   runat="server">Terms and conditions</a> 
                        <br />
                    </div>
                    <div style="float: right; text-align: right">
                       <asp:Label ID="lblCreatedBy" runat="server"></asp:Label>  
                    </div>                    
                </div>                
            <!--footer ends -->
            <div>
                <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
                </asp:ContentPlaceHolder>
            </div>
            </div>
        </div> 
    </form>
</body>
</html>

And here is my MasterPage.master.cs code:

C#

using System;
using System.Web;
using System.Web.Profile;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;

public partial class MasterPage2 : System.Web.UI.MasterPage
{

    protected ContentPlaceHolder head;
    protected HtmlAnchor A1;
    protected HtmlAnchor A2;
    protected HtmlAnchor A9;
    protected SiteMapDataSource SiteMapDataSource1;
    protected Menu MainMenu;
    protected HtmlAnchor home;
    protected HtmlAnchor A3;
    protected HtmlAnchor A4;
    protected HtmlAnchor A5;
    protected HtmlAnchor A6;
    protected HtmlAnchor A7;
    protected HtmlAnchor A8;
    protected HtmlGenericControl submenu;
    protected ScriptManager ScriptManager1;
    protected LoginName LoginName1;
    protected Literal litbal;
    protected Literal litdate;
    protected UpdatePanel up12;
    protected ContentPlaceHolder content1;
    protected ContentPlaceHolder ContentPlaceHolder2;
    protected ContentPlaceHolder ContentPlaceHolder3;
    protected ContentPlaceHolder ContentPlaceHolder4;
    protected Label lblCreatedBy;
    protected ContentPlaceHolder ContentPlaceHolder1;
    protected HtmlForm form1;
    protected DefaultProfile Profile
    {
        get
        {
            return (DefaultProfile)this.Context.Profile;
        }
    }

    protected HttpApplication ApplicationInstance
    {
        get
        {
            return this.Context.ApplicationInstance;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        this.litdate.Text = DateTime.Now.ToString("D");
        if (((object)this.Page.User.Identity.Name).ToString() != "")
            this.litbal.Text = DB.ExecuteScaler(string.Format("Select Agent_current_bal from AgentBasicInfo where Agent_ID='{0}'", (object)((object)this.Page.User.Identity.Name).ToString().ToLower())).ToString();
        else
            this.up12.Visible = false;
        this.submenu.Visible = ((object)this.Page.User.Identity.Name).ToString() == "admin";
        this.lblCreatedBy.Text = "Created By: otieno t oloo";
    }
}

Posted 5-Jul-14 3:45am

tancliffe

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OriginalGriff · Answer 1 · 2014-07-05T03:53:00

Solution 1

Look at your code:

ASP.NET

<asp:contentplaceholder id="head" runat="server" xmlns:asp="#unknown"></asp:contentplaceholder>

And

C#

protected ContentPlaceHolder head;

Now, isn't it obvious why it's complaining? :laugh:

Posted 5-Jul-14 3:53am

OriginalGriff

Comments

tancliffe 5-Jul-14 10:04am

Would you kindly explain to me what this code means please if you don't mind?
<asp:contentplaceholder id="head" runat="server" xmlns:asp="#unknown">

tancliffe 5-Jul-14 12:33pm

if I change and use the code above, I get this error:
Parser Error Message: Type 'System.Web.UI.WebControls.ContentPlaceHolder' does not have a public property named 'xmlns:asp'.

tancliffe 6-Jul-14 10:51am

Any help plz?