how can i change the bg color of a master page from one of its child page programatically

[Jorgen Andersson]

Add this to you content.aspx <%@ MasterType VirtualPath="~/MasterPage.master" %> (using the correct name and path) then you can access your masterpage from the contentpage using Master.WhateverMasterControlYouWantToAccess.

[souravghosh18]

First of all thanx for the response I have added the <@ MasterType VirtualPath="~/MasterPage.master" %> in the content page. and in the master page the body tag has an id="bodycol" and runat="server" Now to change the bgcolor of the master page what i should do. Master.bodycol.Attributes["bgcolor"]="Red"; is not working

[Jorgen Andersson]

You can use Master.bodycol.Style(System.Web.UI.HtmlTextWriterStyle.BackgroundColor) = "Red"

[souravghosh18]

i have used your code but it is giving an error.that MasterPage.bodycol is not accessible in this context because it is Protected

[Karthick_gc]

Where to add this code <%@ MasterType VirtualPath="~/MasterPage.master" %> In master page or the web page?

[Jorgen Andersson]

In the content page.

[Karthick_gc]

Where is the content page? I have only content place holder?

[Jorgen Andersson]

True, you have to wrap it in a public or friend property and access the property from the content page.

[Jorgen Andersson]

The content page is what goes inside the content place holder. Maybe you should read[^] up on it a bit.

[Amit Sk Sharma]

Put all Master page content in a div control with ID and runat="server" inside form like : Form opening TAG DIV u will put all page stuff DIV close TAG Form Close tag and then use following in your content page code where u wish to change the bgColor for master page CType(Me.Page.FindControl("ctl00$div1"), HtmlGenericControl).Style.Add("background-color", "Yellow") where div1 is the DIV control ID in ctl00$div1

With Thanks & Regards Amit Sk Sharma

[souravghosh18]

i am using it like following, Public Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click Master.bodytag.Style(System.Web.UI.HtmlTextWriterStyle.BackgroundColor) = "Green" End Sub And it is giving the error how can it be wrapped in a friend property.

[Jorgen Andersson]

You can do it like this. Put this one in the master: Public WriteOnly Property ChangeColor() As Boolean Set(ByVal value As Boolean) bodytag.Style(System.Web.UI.HtmlTextWriterStyle.BackgroundColor) = "Green" End Set End Property And in the contentpage you call it with: Public Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click Master.ChangeColor = true End Sub I know, it's a bit ugly...

[souravghosh18]

Thanx a lot sir for your constant guidance.At last it is working fine. Thanx again

[Jorgen Andersson]

You're welcome