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Why can't I use a ContentPlaceholder inside HTML attributes in ASP.NET?

I'm using ASP.NET MVC2 and C#, but this question applies to ASP.NET in general. This breaks: <body id="<asp:ContentPlaceHolder ID="BodyID' runat="server" />"> Intellisense underlines the body tag and the opening quote immediately after id=, and complains: Validation (HTML 4.01): Element 'body' is missing the '>' character from its start tag. The asp element is ignored, and the id attribute is empty in the rendered HTML. (Same problem whether I use double or single quotes inside the ASP element, tho the latter breaks syntax hilighting in VS.) This works (assuming I set the session variable):

2021-06-23 18:12:09    分类:问答    html   asp.net   contentplaceholder

ContentPlaceHolders: Repeated Content

Scenario I have an application using asp.net Master Pages in which I would like to repeat some content at the top and bottom of a page. Currently i use something like this: Master Page <html> <body> <asp:ContentPlaceHolder ID="Foo" runat="server"> </asp:ContentPlaceHolder> <!-- page content --> <asp:ContentPlaceHolder ID="Bar" runat="server"> </asp:ContentPlaceHolder> </body> </html> Content Page <asp:Content ID="Top" ContentPlaceHolderID="Foo" runat="server"> <!-- content --> </asp:Content> <asp:Content ID="Bottom" ContentPlaceHolderID="Bar" runat="server"> <!-- content repeated --> </asp

2021-06-13 22:12:40    分类:问答    asp.net   master-pages   contentplaceholder

How to replace text in a PowerPoint (.ppt) document?

What solutions are there? I know only solutions for replacing Bookmarks in Word (.doc) files with Apache POI? Are there also possibilities to change images, layouts, text-styles in .doc and .ppt documents? I think about replacement of areas in Word and PowerPoint documents for bulk processing. Platform: MS-Office 2003

2021-06-11 08:27:03    分类:问答    replace   powerpoint   placeholder   contentplaceholder

How to programmatically add stuff to contentPlaceHolder?

I have a master page and all of my pages are inheriting it. For formatting, I thought to place the content that differs from one page to another in a ContentPlaceHolder. Now, how can I insert everything into that? Since I am planning to populate the ContentPlaceHolder with stuff from a database I suppose I will have to do it programmatically. How can I add controls to ContentPlace Holder? I checked other answers, but I cannot access it by its ID. Should I use multiple ContentPlaceHolders from the beginning? Let's say I want to put movies. Should there be only one with all the images and

2021-06-05 14:01:06    分类:问答    c#   asp.net   master-pages   contentplaceholder

Using iFrames In ASP.NET

I have an asp.net website with a master-page, can I use the iframe so my .aspx pages will load inside the iframes. (Meaning it wont load the master-page) Kinda like my iframe will be the contentplaceholder or maybe the contentplaceholder will be inside it? Any Ideas?

2021-04-23 07:33:37    分类:问答    c#   asp.net   iframe   contentplaceholder