Problem using form runat=server with master pages?
Question
I have a master page with two ContentPlaceHolders .
I have a default page.aspx which uses this master page.
In the default page one ContentHolder has a TreeView and the other has a GridView .
Now i need to display both of them together and both require <form runat="server"> .
But the issue is that i cant have two instances of <form runat="server"> in a single page.
I tried putting <form runat="server"> on the master page but then the TreeView and GridView functionality stops working.....
Please help me as to what can i do to solve this.
Page File:
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="GridViewPg1.aspx.cs" Inherits="GridViewPg1" %>
<%@ Register assembly="obout_Grid_NET" namespace="Obout.Grid" tagprefix="cc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<form id="form1" runat="server">
<asp:Panel ID="Panel1" runat="server" ScrollBars="Vertical">
<a style="color: #000000; font-weight: bold;">SumooHServer</a>
<p> <asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:SumooHAgentDBConnectionString %>"
SelectCommand="SELECT DISTINCT [MachineGroupName], [MachineGroupID] FROM [MachineGroups]">
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource2" runat="server"
ConnectionString="<%$ ConnectionStrings:SumooHAgentDBConnectionString %>"
SelectCommand="SELECT DISTINCT [PolicyID], [PolicyName] FROM [Policies]">
</asp:SqlDataSource>
<asp:TreeView ID="TreeView2" runat="server"
ontreenodepopulate="TreeView2_TreeNodePopulate">
<Nodes>
<asp:TreeNode NavigateUrl="~/GridViewPg1.aspx" PopulateOnDemand="True"
Text="Machine Group" Value="Machine Group"></asp:TreeNode>
</Nodes>
</asp:TreeView>
<asp:TreeView ID="TreeView3" runat="server"
ontreenodepopulate="TreeView3_TreeNodePopulate">
<Nodes>
<asp:TreeNode PopulateOnDemand="True" Text="Policies" Value="Policies">
</asp:TreeNode>
</Nodes>
</asp:TreeView>
</p></asp:Panel>
</form>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">
<asp:Panel ID="Panel2" runat="server" ScrollBars="None" Width="100%">
<cc1:Grid ID="Grid1" runat="server" AllowFiltering="True"
AllowGrouping="True" DataSourceID="SqlDataSource3">
</cc1:Grid>
<asp:SqlDataSource ID="SqlDataSource3" runat="server"
ConnectionString="<%$ ConnectionStrings:SumooHAgentDBConnectionString %>"
SelectCommand="SELECT * FROM [MachineGroups]"></asp:SqlDataSource>
</asp:Panel>
</asp:Content>
Masterpage file:
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<title>SumooH</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div id="wrapper">
<div id="header"
style="border-bottom-style: solid; border-bottom-color: #0000FF; border-bottom-width: medium">
</div>
<div id="left-content"
style="border-right: thin ridge #000000; top: 104px;">
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
<div id="content-wrapper">
<div id="content-inner">
<asp:ContentPlaceHolder id="ContentPlaceHolder2" runat="server">
</asp:ContentPlaceHolder>
</div>
<div id="footer">
<p> </p>
</div>
</div>
</div>
</body>
</html>
2 answers
solution1
5 2009-09-22 20:26:03
You say that the TreeView and GridView functionality "stops working" when the <form runat="server"> is in the master page -- but if doing two forms (one in the master, one in the page using the master) doesn't work, then technically it's not working either way.
The correct idiom for ASP.NET 2.0+ using master pages is to place the form tag in the master page. The pages using the master, if wired up correctly, will not need form tags -- they will get the tag from their master. The web app I just deployed this morning worked that way. :)
I'm guessing that there's actually a code issue buried in the page itself causing the TreeView and GridView to not function once the form tags are implemented correctly.
EDIT
To be clear, the master page must have <form runat="server"> , all of the other controls & HTML needed, the placeholders, and a closing </form> tag.
The pages using the master cannot have any <form runat="server"> tags at all, and especially not a closing </form> tag.
Done this way, there should be no problems.
solution2
1 2009-09-22 21:07:14
Your master page should contain the form element, with the closing element at the bottom of it.
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<title>SumooH</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server" />
</div>
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolder2" runat="server" />
</div>
</form>
</body>
Your content pages should not contain any form elements for your purposes.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.