Just normal like at page_load
FbtnLink.Click +=new EventHandler(FbtnLink_Click);
.
But as you are doing a cross page posting make the accessibility of this page data through properties. So if you have
public string message { get; set; }
then at Link button click
protected void FbtnLink_Click(object sender, EventArgs e)
{
message = "Hello Page2 From Page1";
}
this property can be accessed from the other page
At the markup register the type of previous page
<%@ PreviousPageType VirtualPath="~/Default.aspx" %>
Response.Write(this.PreviousPage.message);
.
You need to access the previous page at least one time to get the click event run. This is wired but some strange behavior.
Good luck