Lets say that I have a header user control in a master page, and want to change a property of the user control depending on what content page is loaded inside of the master page. How might I go about this?
You can use two methods. The first is by using
Page.Master.FindControl('controlID'). Then you can cast it to the type of your user control. The second method is by adding a
<%@ MasterType VirtualPath=""> OR
<%@ MasterType TypeName=""%> tag to your aspx page. In the
VirtualPath add the virtual path to the master page, or the class in the
TypeName. You can then access everything with intellisense.