How do I call a method in a Master Page from a content's code-behind page?

Question

I have a public method in my ASP.NET Master Page. Is it possible to call this from a content page, and if so what are the steps/syntax?

score 37 · Accepted Answer · answered Jun 13 '11 at 15:57

37

From within the Page you can cast the Master page to a specific type (the type of your own Master that exposes the desired functionality), using as to side step any exceptions on type mismatches:

var master = Master as MyMasterPage;
if (master != null)
{
    master.Method();
}

In the above code, if Master is not of type MyMasterPage then master will be null and no method call will be attempted; otherwise it will be called as expected.

answered Jun 13 '11 at 15:57

Grant Thomas

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Check out Uwe Keim's answer first; I found it very simple to use. – Tim Dec 19 '13 at 17:58

score 19 · Answer 2 · edited Oct 30 '14 at 12:01

19

Use the MasterType directive like e.g.:

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

Then you can use the method like this:

Master.Method();

edited Oct 30 '14 at 12:01

Phil

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answered Jun 13 '11 at 16:03

Uwe Keim

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score 11 · Answer 3 · answered Jun 13 '11 at 15:58

11

You can simply do like...

MasterPageClassName MasterPage = (MasterPageClassName)Page.Master;
MasterPage.MasterMethod();

Check for Details ACCESS A METHOD IN A MASTER PAGE WITH CODE-BEHIND

answered Jun 13 '11 at 15:58

Muhammad Akhtar

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Can you add this as a static member at the top of your page? – Adrian S Jun 14 '11 at 20:16

score 6 · Answer 4 · answered Jun 13 '11 at 15:56

6

MyMasterPageType master = (MyMasterPageType)this.Master;
master.MasterPageMethod();

answered Jun 13 '11 at 15:56

George Duckett

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Can you add this as a static member at the top of your page? – Adrian S Jun 14 '11 at 20:16
Not a static member, because the master page is specific to the page currently handling the request. You could make an instance property for the master page though: `private MyMasterPageType master { get { return (MyMasterPageType)this.Master; } }` – George Duckett Jun 14 '11 at 20:20

How do I call a method in a Master Page from a content's code-behind page?

4 Answers4

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