string pageName = this.ContentPlaceHolder1.Page.GetType().FullName;

//Page_Load
MyMaster m = (MyMaster)this.Master;

m.TellMasterWhoIAm(this);

//Only show the message if on the dashboard (first page after login)
                if (this.ContentPlaceHolder1.Page is Dashboard)
                {
                    //Show modal message box
                    mmb.Show("Warning Message");
                }

Page.ToString().Replace("ASP.","").Replace("_",".")

if (Page.TemplateControl.AppRelativeVirtualPath == "~/YourPageName.aspx")
{
   // your code here
}

if (Page.TemplateControl.AppRelativeVirtualPath.Equals("~/YourPageName.aspx", StringComparison.OrdinalIgnoreCase))
{
   // your code here
}

this.Request.Url.AbsolutePath

string pageName = this.Request.Url.Segments.Last();

if (pageName.Contains("EmployeeTermination.aspx"))
{

}

Request.CurrentExecutionFilePath;

Request.AppRelativeCurrentExecutionFilePath;

string s =   Page.ToString().Replace("ASP.directory_name_","").Replace("_aspx",".aspx").Replace("_","-");
        if (s == "default.aspx")
              { /* do something */ }

<%if(this.MainContent.Page.Title != "mypagetitle") { %>
<%}%>

// Assuming MyPage1, MyPage2, and MyPage3 are the class names in your aspx.cs files:

if (this.Page is MyPage1)
{
  // do MyPage1 specific stuff
}
else if (this.Page is MyPage2)
{
  // do MyPage2 specific stuff
}
else if (this.Page is MyPage3)
{
  // do MyPage3 specific stuff
}