更改母版页上链接按钮上的文本？

Question

Im looking to change the text on a linkbutton on a masterpage when a user clicks a button on a content page and the resulting action meets certain criteria. Is this do-able? I cant seem to access the masterpage controls via intellisense, which I suppose makes sense, but is there a way around it?

thanks again

Answer 1

You have to find the control in the master page using the FindControl method, like...

(ControlType)Master.FindControl("controlID")


((LinkButton)Master.FindControl("LinkButtonID")).Text = "New Text";

Answer 2

Add a property in the code behind of your master page like this:

public LinkButton LButton
{
    get { return lButton; }
    set { lButton = value; }
}

At the top of your.aspx page, add this directive with a virtual path to your master page:

<%@ MasterType VirtualPath="~/Master.master" %>

Rebuild the solution and in the code behind of your.aspx, you are able to do this:

Master.LButton.Text = "foo bar";

EDIT: If you want the text to persist over other pages: When the certain criteria is met, you could instead set a session variable:

Session.Add("Link Button Text", "foobar");

In the Page_Load of the MasterPage:

if(Session["Link Button Text"] != null)
{
   lButton.Text = Session["Link Button Text"].ToString(); 
} 

Answer 3

Use the Master keyword. So Master.control will access a control on the master page.

Answer 4

To provide another alternative to the solutions given, you could also consider giving the master an interface:

public interface IMaster
{
   string LinkButtonText { get; set; }
}

Apply this interface to the code-behind of the master. Then do in the page:

((IMaster)Page.Master).LinkButtonText = "XYZ";

Also, if you have a custom base page class, you can shadow the Master property and return this interface instead, so you can directly reference it.

HTH.