How to clear the error help me

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I have designing in my web page

My error
A page can have only one server-side Form tag.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: A page can have only one server-side Form tag.

Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

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

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>



<asp:Content ContentPlaceHolderID="ContentPlaceHolder1" runat="server" ID="ContentPlaceHolder1">



<form  runat="server">
   
    <div style="width:100%;    border:1px   solid #009900;  background-color:#E4E4E4">
	 
 
       
   
   
    <div style="height: 267px; width: 549px">
    <table width="100%">
        
    <tr><td>Bill No     :<asp:Label ID="lblBillNo" 
            runat="server">
                    </td><td class="style1" colspan="2"><asp:TextBox ID="txtBillNo" runat="server" 
                Visible=false Width="122px"></td><td class="style2"> </td><td>
         </td></tr>
    <tr><td>Customer Name :</td>
       <td class="style1" colspan="2"> <asp:TextBox ID="txtCName" runat="server"></td>
       <td class="style2">  </td>
       <td>  </td></tr><tr>
        <td>Phone No :</td><td class="style1" colspan="2"><asp:TextBox ID="txtPhone" runat="server"></td>
        <td class="style2"> </td><td> </td></tr>
    <tr><td> Date :</td><td class="style1" colspan="2"><telerik:RadDatePicker ID="rdStartDate"   runat="server">
       
                    </td><td class="style2"> </td><td> </td></tr><tr><td>Delivery Date :</td>
        <td class="style1" colspan="2">
                        <telerik:RadDatePicker ID="rdEndDate"  runat="server">
                        
                    </td><td class="style2">
                         </td><td>
                         </td></tr><tr><td>System URL :</td><td class="style1">
                colspan="2">
                        <asp:FileUpload ID="browseFilepath" runat="server" /></td>
            <td class="style2">
                         </td><td>
                         </td></tr>

<tr><td>
    <asp:GridView ID="DisplayGrid" runat="server" AutoGenerateColumns="False" 
        CellPadding="4" ForeColor="#333333" GridLines="None" 
        onrowdeleting="GridView1_RowDeleting" 
        onselectedindexchanged="DisplayGrid_SelectedIndexChanged" ShowFooter="True" 
        Width="468px">
        <footerstyle backcolor="#507CD1" font-bold="True" forecolor="White" />
        <rowstyle backcolor="#EFF3FB" />
        <columns>
            <asp:BoundField DataField="Size" HeaderText="Size" InsertVisible="False" 
                Visible="False" />
            <asp:TemplateField HeaderText="Size">
                <itemtemplate>
                    <asp:Label ID="lblSize" runat="server" Text='<%# Bind("Size") 

%>'>
                </itemtemplate>
            
            <asp:TemplateField HeaderText="No Of Copies">
                <itemtemplate>
                    <asp:Label ID="lblNoofcopies" runat="server" Text='<%# 

Bind("Noofcopies") %>'>
                </itemtemplate>
            
            <asp:TemplateField HeaderText="Amount">
                <itemtemplate>
                    <asp:Label ID="lblAmount" runat="server" Text='<%# 

Bind("Amount") %>'>
                </itemtemplate>
            
            <asp:TemplateField HeaderText="Total">
                <itemtemplate>
                    <asp:Label ID="lblTotal" runat="server" Text='<%# Bind("Total") 

%>'>
                </itemtemplate>
            
            <asp:CommandField HeaderText="Delete" ShowDeleteButton="True" />
        </columns>
        <pagerstyle backcolor="#2461BF" forecolor="White" horizontalalign="Center" />
        <SelectedRowStyle BackColor="#D1DDF1" Font-Bold="True" ForeColor="#333333" />
        <HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
        <editrowstyle backcolor="#2461BF" />
        <alternatingrowstyle backcolor="White" />
        <emptydatatemplate>
            No Record
        </emptydatatemplate>
    
    </td><td class="style1" colspan="2"> </td>
             <td class="style2"> </td>
             <td> </td>
             </tr>
         <br />
         <br />
         <tr><td>
              </td>
             <td class="style1">
                  </td>
             <td class="style1">
                  </td>
             <td class="style2">
                  </td>
             <td>
                  </td></tr>
         
        <tr><td>Size :</td><td class="style1" colspan="2">
            <asp:DropDownList ID="cmbSize" runat="server" AutoPostBack="True" 
                        onselectedindexchanged="cmbSize_SelectedIndexChanged">
            
        </td><td class="style2">
                 </td><td>
                 </td></tr>
         
        <tr><td>Amount :</td><td class="style1" colspan="2">
                        <asp:TextBox ID="txtAmt" runat="server" 
                        >
        </td><td class="style2">
                             </td><td>
                             </td></tr><tr><td>Extra Copies :</td><td class="style1">
                colspan="2">
            <asp:TextBox ID="txtNoofcopies" runat="server"  AutoPostBack="true"
                      ></td>
            <td class="style2">
                 </td><td class="style3">
                             </td></tr>
            <tr><td> Extra Copy Amount :</td><td class="style1" colspan="2">
                        <asp:TextBox ID="TextBox1" runat="server" AutoPostBack="true" ontextchanged="TextBox1_TextChanged">
                        </td><td class="style2"> </td><td> </td>
            <tr><td>
                Total</td><td class="style1" colspan="2">
            <asp:TextBox ID="txtTot"  runat="server"  AutoPostBack="true">
                        </td><td class="style2"> </td><td> </td>
            <tr><td>
                <asp:Label ID="Label3" runat="server" Text="Lamination">
                </td><td class="style1" colspan="2">
                        <asp:DropDownList ID="Ddl" runat="server">
                                     
                        </td><td class="style2"> </td><td> </td><tr><td class="style4">
                <asp:Label ID="Label4" runat="server" Text="Lamination Amount">
                </td>
        <td class="style1" colspan="2">
                        <asp:TextBox ID="txtlami" runat="server" AutoPostBack="true" 
                            ontextchanged="txtlami_TextChanged" >
                        </td><td class="style2">
             </td><td class="style3"> </td></tr>
            <tr><td><asp:Label ID="Label1" runat="server" Text="Grand Total : " Font-Bold="true" Font-Size="Medium" 

>
                </td>
                <td class="style1" colspan="2">
                    <asp:TextBox ID="txtgrandtot" runat="server"  AutoPostBack="true"
                       >
                </td>
                <td class="style2"> </td>
                <td> </td>
                <td>
                     </td></tr>
            <tr><td>
                <asp:Label ID="Label2" runat="server" Text="Paid Amount">
                </td>
                <td class="style1" colspan="2">
             <asp:TextBox ID="txtPaid" runat="server" ontextchanged="txtPaid_TextChanged"></td>
                <td class="style2"> </td>
                <td> </td>
                <td>
                     </td></tr>
            <tr><td>Balance</td>
                <td class="style1" colspan="2">
                    <asp:TextBox ID="txtbalance" runat="server" 
                       >
                        </td>
                <td class="style2"> </td>
                <td> </td>
                <td>
                     </td></tr>
            <tr><td>
                <asp:Button ID="btnAdd" runat="server" Text="Add" onclick="btnAdd_Click" /><asp:Button ID="btnSave" runat="server" Text="Save" onclick="btnSave_Click" />
                    <asp:Button ID="btnClear" runat="server" Text="Clear" 
            onclick="btnClear_Click" /></td>
                <td class="style1" colspan="2"> </td>
                <td class="style2"> </td>
                <td> </td>
                <td>
                     </td></tr></tr></tr></tr></table>
             
 <br />
            <asp:ImageButton ID="imgPrint" runat="server" ImageUrl="~/images/print.jpg" 
            onclick="imgPrint_Click" />
<br />
 
              
    <asp:Label ID="lblError" runat="server" Text="">
        
    </div>
    
   
    </div>
		
		</form>

Posted 25-May-11 22:15pm

kannan 2

Updated 27-May-11 1:46am

RaviRanjanKr

v4

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Comments

RakeshMeena 26-May-11 4:18am

Can you post the markup.... As the error description says, you might be having multiple "form" controls inside your page markup or you are adding extra "form" control in the code-behind.

Deepthi Aravind 26-May-11 4:21am

please post your source

3 solutions

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Ashishmau · Accepted Answer · 2011-05-25T22:18:00

Solution 1

Have u added two tag in your source file.

Only one Tag is allowed per aspx.
Remove extra tag and try.

Posted 25-May-11 22:18pm

Ashishmau

Hemant__Sharma · Accepted Answer · 2011-05-25T23:33:00

Solution 2

you have a master page (i.e. MasterPage.master) and that will contain a form tag and you have added a form tag in your current page also (i.e. MainPage.aspx) remove current web page's form tag i.e. remove

XML

<form  runat="server">

and

XML

</form>

Thanks,
hemant

Posted 25-May-11 23:33pm

Hemant__Sharma

Updated 25-May-11 23:46pm

v2

Comments

Ashishmau 27-May-11 7:50am

Spot on.

Hemant__Sharma 27-May-11 8:05am

Thank you very much :)

Wonde Tadesse · Accepted Answer · 2011-05-26T14:40:00

Solution 3

How come the form tag added here? You are using a Master page ! No need to have the form tag.Just get rid of it.

Posted 26-May-11 14:40pm

Wonde Tadesse

Updated 27-May-11 1:42am

v3