Add ASP.NET Masterpage Afterwards

When you’ve got some existing ASP.NET pages and you later on want to add a common masterpage, do this:

Master Page

  1. Create a masterpage, e.g. Management.Master.
  2. Add the sub pages’ comon controls to the master.
  3. In the Management.Master, add ContentPlaceHolder items for head and body:


Sub Page

Do the following in the subpage.aspx:

  1. Add masterpagefile to page level directive:
    <%@ Page ... MasterPageFile="Management.Master"
  2. Remove the , ,
    and

    , tags.

  3. Replace the tag by the tag respecting the link to the ContentPlaceHolder via ID and ContentPlaceHolderID, like this:

    // former head content goes here

  1. Likewise replace the body tag by the tag:

    // former body content goes here

Sub Page Easy

If you've got nothing than the </code> tag inside of the <code><head></code> section, it is a bit easier:</p> <ol> <li>Add masterpagefile and title to page level directive:<br /> <code><%@ Page ... MasterPageFile="Management.Master" Title="Subpage"</code> </li> <li>Remove the <code><head></code> section.</li> <li>Replace the <code><body></code> tag by the <code><asp:Content...></code> tag respecting the link to the ContentPlaceHolder via ID and ContentPlaceHolderID, like this:</li> </ol> <pre><code><asp:Content ID="Cont1" ContentPlaceHolderID="CphBody" runat="server"> // former body content goes here </asp:Content> </code></pre> <p><em>Finish</em></p> </div><!-- .entry-content --> <footer class="entry-meta"> <span class="cat-links"> <span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> <a href="https://99-developer-tools.com/category/tools/" rel="category tag">Tools</a> </span> <span class="sep"> | </span> <span class="tag-links"> <span class="entry-utility-prep entry-utility-prep-tag-links">Tagged</span> <a href="https://99-developer-tools.com/tag/asp-net/" rel="tag">ASP.NET</a> </span> </footer><!-- .entry-meta --> </article><!-- #post-1985 --> 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