>Hi,
>I try to do simple thing.. ( I see a education video.. and do the same, but no success)
>
>Create new project
>Create new master page.
>Add DIV and ContentPlaceHolder to the master page.
>
>Open Default.aspx
>Set the MasterPageFile="~/mypage.master"
>
>Page repaint - all fine.
>Delete HTML code - leave only header
>Click on ContentPlaceHolder and select "Create Custom Content".
>
>It creates someting like
>

><asp:Content ID="Content1" runat="server" contentplaceholderid="MyContent">
></asp:Content
>

>
>Now.. problem begins.. I type inside something like "Hello World" - start page - nothing..
>
>Check "Source" for contentplaceholder - there nothing written between asp - tags..
>
>What do I wrong?
>
>Thanks
>Denis

If the ContentPlaceHolder is in the header, then you won't see anything in the body. Generally, as Paul indicated, you should have two ContentPlaceHolders. Can you show your full code?