Setting the property for div in a ContentPlaceHolder

Following shows how to set the property for a div that is in a C#.NET ContentPlaceHolder found with Master Pages:

Step 1; in the aspx file, the div needs a unqiue id and set to runat="server":

 <asp:Content ID="conent1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <div id="myDivId" runat="server" style="display: block;"> <p>foo bar</p> </div> </asp:Content> 

Step 2; In the aspx.cs file, the ContentPlaceHolderId is retrieved first using the Page.Master.FindControl and then used to reference the div:

 ContentPlaceHolder content = (ContentPlaceHolder)Page.Master.FindControl("ContentPlaceHolder1"); content.FindControl("myDivId").Visible = false;