Access ASP.NET Master Page controls from Content Page

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Mentioned here are two ways you can access MasterPage controls from Content Page

Approach 1

Go to the Content page (Default.aspx) and add the following line below the <Page> directive to register the MasterPage

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

Now in the code behind of ContentPage, access the MasterPage control in the following manner

C#

TextBox tb = (TextBox)Master.FindControl("txtMaster");

tb.Text = "Something";

VB.NET

        Dim tb As TextBox = CType(Master.FindControl("txtMaster"), TextBox)

        tb.Text = "Something"

Approach 2

Expose the Text property of the TextBox control in the MasterPage and use get set properties as shown below

C#

public string SomeText

{

    get

    {

        return txtMaster.Text;

    }

    set

    {

        txtMaster.Text = value;

    }

 

}

VB.NET

    Public Property SomeText() As String

        Get

            Return txtMaster.Text

        End Get

        Set(ByVal value As String)

            txtMaster.Text = value

        End Set

 

    End Property

Now accessing the Text property from the Content page is as simple as this line of code. Add the code in the codebehind of the MasterPage

Master.SomeText = "Something";

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About The Author

Suprotim Agarwal, Developer Technologies MVP (Microsoft Most Valuable Professional) is the founder and contributor for DevCurry, DotNetCurry and SQLServerCurry. He is the Chief Editor of a Developer Magazine called DNC Magazine. He has also authored two Books - 51 Recipes using jQuery with ASP.NET Controls. and The Absolutely Awesome jQuery CookBook.

Follow him on twitter @suprotimagarwal.