Master.FindControl giving NullReferenceException

Question

I am trying this

if (!IsPostBack)
    {
        Label theLabel = Master.FindControl("HeadingLabel") as Label;
        if (theLabel != null)
        {
            theLabel.Text = "Our Valuable Customers ";
        }
    }

i am getting a NullRefernceException error ,i am following a video series ,so i am doing the same ,but not able to run the code.He is is using .Net version =2.0 and i am using 4.0.

here is code for my master page

<asp:Label ID="HeadingLabel" runat="server" Font-Bold="True"Text="Online Shopping Website"></asp:Label>

First thing to double-check: is `FindControl` actually returning `null`, or is it the use of the `as` operator? (This is why I prefer casting, in most places... it makes diagnostics simpler.) — Jon Skeet, Mar 17 '15 at 09:35
[What is a `NullReferenceException` and how do I fix it?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) — Soner Gönül, Mar 17 '15 at 09:35
Find control is not recursive. chances are your HeadingLabel is contained in another control — Ewan, Mar 17 '15 at 09:35
Looks like `Master` is null. If so, the page you're on isn't actually based on the master page. Make sure the `aspx` actually has a master page specified in the `@Page` directive. — Luaan, Mar 17 '15 at 09:36

score 1 · Accepted Answer · answered Mar 17 '15 at 09:46

1

Looks like Master is null. If so, the page you're on isn't actually based on the master page.

Make sure the aspx actually has a master page specified in the @Page directive.

answered Mar 17 '15 at 09:46

Luaan

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Master.FindControl giving NullReferenceException

1 Answers1