I am currently referencing this website for AD role management.
The C# code is working fine, but when I pasted the code inside my webpage along with the masterpage, the page gave me an error which says:
Content controls have to be top-level controls in a content page or a nested master page that references a master page.
May I know how should I set my masterpage in this case?
.ASPX page without masterpage:
<%# Page Language="C#" %>
<%# Import Namespace="System.Web.Security" %>
<%# Import Namespace="System.Web.UI" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
string[] rolesArray;
MembershipUserCollection users;
string[] usersInRole;
public void Page_Load()
{
....
}
public void AddUsers_OnClick(object sender, EventArgs args)
{
....
}
public void UsersInRoleGrid_RemoveFromRole(object sender, GridViewCommandEventArgs args)
{
....
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Role Membership</title>
</head>
<body>
<form runat="server" id="PageForm">
<font face="helvetica" size="6" color="#455c75"><strong>Role Membership</strong></font><font face="helvetica" size="5" color="#455c75"><strong> Management</strong></font>
<br /><asp:Label ID="Msg" ForeColor="maroon" runat="server" /><br />
<table cellpadding="3" border="0">
...
</table>
</form>
Masterpage:
<%# Master Language="C#" AutoEventWireup="true" CodeFile="MainPage.master.cs" Inherits="MainPage" %>
<!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 id="Head1" runat="server">
<title>SOD</title>
<link href="Styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
...
</body>
</html>
EDIT:
I tried inserting MasterPageFile="~/MainPage.master" into the first tag, which start my .aspx page with <%# Page Language="C#" MasterPageFile="~/MainPage.master"%>, giving me the error mentioned above.
The Masterpage contains HTML code and content areas. The pages that use the masterpage must, MUST, have all code in an <asp:Content> tag. You can't have any sort of code outside of the Content tag.
You need to place your code inside an <asp:Content ID="content1" ContentPlaceHolderID="Content_pageBody" Runat="Server"></content> tag. This tag should map to your master page, where ContentPlaceHolderID = the place holder name in your master page
Related
I am using the OnClick of the asp:Button tag to compute a report which I would like to display as an innerHTML of a div tag. I would like to use the Response.WriteLine method to return this html file. Does ASP.NET webforms provide a way of capturing this response?
Am I forced to use JavaScript instead? I am using C# on the Server side.
The Web Forms way of doing this is to use a control and set its InnerHTML from the code behind. Here's a self contained example:
<%#Page Language="C#" AutoEventWireup="true" %>
<script runat="server">
protected void GenerateReport(object sender, EventArgs e)
{
var reportHTML = "<p>This is a <span style='font-weight: bold;'>report!</span></p>";
ReportDiv.InnerHtml = reportHTML;
}
</script>
<!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>Test</title>
</head>
<body>
<form runat="server">
<asp:Button runat="server" OnClick="GenerateReport" Text="Generate Report" />
<div runat="server" id="ReportDiv"></div>
</form>
</body>
</html>
I like to to ask that is there a way to load an ascx control from string? To be more precise: I like to make/store a new .ascx in sql then load it to the website.
Yes, you should be able to use the ParseControl function to do what you want:
http://msdn.microsoft.com/en-us/library/kz3ffe28.aspx
Example from MSDN:
<%# Page language="c#" Debug="true" %>
<!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>ASP.NET Example</title>
<script runat="server">
// System.Web.UI.TemplateControl.ParserControl;
// The following example demonstrates the method 'ParseControl' of class TemplateControl.
// Since TemplateControl is abstract, this sample has been written using 'Page' class which derives from
// 'TemplateControl' class.
// A button object is created by passing a string to contstruct a button using ASP syntax, to the
// 'ParseControl' method. This button is added as one of the child controls of the page and displayed.
void Page_Load(object sender, System.EventArgs e)
{
Control c = ParseControl("<asp:button text='Click here!' runat='server' />");
myPlaceholder.Controls.Add(c);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:placeholder id ="myPlaceholder" runat="server" />
</form>
</body>
</html>
I have a masterpage in ASP.NET Web forms. I created a ContentPlaceHolder between the form tags on the master page. Then I added a web form (named Page.aspx) to the project with the aforementioned masterpage. I added a Content control to the Page.aspx. Then I wanted to add a GridView in Content tags on Page.aspx. But it gives me the following warning: " ASP.NET runtime error: Only Content controls are allowed directly in a content page that contains Content controls.". How can I fix problem? Sorry for my English.
You probably need to wrap them in these tags:
<ContentTemplate></ContentTemplate>
Master Page
<%# Master Language="C#" AutoEventWireup="true" CodeFile="Master.master.cs"
Inherits="Master_Page" %>
<!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">
<asp:ContentPlaceHolder id="head" runat="server">
</asp:ContentPlaceHolder>
<form id="form1" runat="server">
</form>
</html>
Page.aspx
<%# Page Language="C#" MasterPageFile="~/Master.master" AutoEventWireup="true"
CodeFile="Page.aspx.cs" Inherits="Faculty_Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1"
Runat="Server">
<asp:Panel ID="Panel2" runat="server" Height="449px">
<asp:GridView ID="GridView1" runat="server" >
</asp:GridView>
</asp:Panel>
</asp:Content>
Just make a try out of this,It may help
I am trying to do an ajax website, but my ajax is not working. I checked my GAC and system.web,extensions dll is available.
Why it is not working .? I am also not getting any errors. I tried many ways.
I wrote the below code to test ajax.
<%# Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%# Register Assembly="System.Web.Extensions" Namespace="System.Web.UI" TagPrefix="asp" %>
<%# Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<!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>
</head>
<body>
<form id="form1" runat="server">
<div>
<cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
</cc1:ToolkitScriptManager>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<cc1:CalendarExtender ID="CalendarExtender1" runat="server" TargetControlID="TextBox1">
</cc1:CalendarExtender>
</div>
</form>
</body>
</html>
JAvascript error that i got
1.Type is not defined
http://localhost:1467/testnew/Default.aspx?_TSM_HiddenField_=ToolkitScriptManager1_HiddenField&_TSM_CombinedScripts_=%3b%3bAjaxControlToolkit%2c+Version%3d1.0.20229.20821%2c+Culture%3dneutral%2c+PublicKeyToken%3d28f01b0e84b6d53e%3aen-US%3ac5c982cc-4942-4683-9b48-c2c58277700f%3ae2e86ef9%3aa9a7729d%3a9ea3f0e2%3a9e8e87e9%3a1df13a87%3a4c9865be%3aba594826%3a507fcf1b%3ac7a4182e
You have to make sure ajax 1.0.20229.20821 is registered on your machine before trying to use the controls
You can find it here: http://msdn.microsoft.com/en-us/library/bb861898(v=office.12).aspx
I have two pages, a master page and child page. How can I set javascript on child page?
I want implement textchange function on child page using javascript.
Master Page :
<%# Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="Site" %>
<!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></title>
<asp:ContentPlaceHolder ID="ContentPlaceHolderHead" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ContentPlaceHolder ID="ContentPlaceHolderMain" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
</html>
Child page :
<%# Page Title="" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebForm1" %>
<asp:Content ID="ContentHead" ContentPlaceHolderID="**ContentPlaceHolderHead**" runat="server" >
<script language="javascript" type="text/javascript">
// You can write a javascript code HERE...
</script>
</asp:Content>
<asp:Content ID="ContentMain" ContentPlaceHolderID="ContentPlaceHolderMain" runat="server" >
<!-- Content -->
</asp:Content>
In other way, you can add a javascript file in the code-behind file of child page.
protected void Page_Load(object sender, EventArgs e)
{
HtmlGenericControl somejs = new HtmlGenericControl("script");
somejs.Attributes.Add("type", "text/javascript");
somejs.Attributes.Add("src", ResolveClientUrl("~/Content/js/something.js"));
this.Page.Header.Controls.Add(somejs);
}
Just Add scrip inside a contentplaceholder and make sure you set the master page file of your child page eg: MasterPageFile="~/Mymaster.Master".
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<script type="text/javascript" language="javascript">
//Your Script HERE
</script>
//YOUR HTML TAG HERE
</Content>
Regards
You could user ClientScriptManager.RegisterStartupScript in your child page.