need a help ? to access variables in another class

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C#

ASP.NET

public partial class Login : System.Web.UI.Page
{
 
    protected void Page_Load(object sender, EventArgs e)
    {
   
    }
    public void Button1_Click(object sender, EventArgs e)
    {
 
        String Strt_Address = TextBox1.Text;
        String End_Address = TextBox2.Text;
 
        string geocodeUrl1 = string.Format(@"http://maps.googleapis.com/maps/api/geocode/xml?address={0}&sensor=false", Strt_Address);
 
        string geocodeUrl2 = string.Format(@"http://maps.googleapis.com/maps/api/geocode/xml?address={0}&sensor=false", End_Address);
 
        
 
        XmlDocument geocodeXmlDoc1 = new XmlDocument();
        geocodeXmlDoc1.Load(geocodeUrl1);
 
        XmlDocument geocodeXmlDoc2 = new XmlDocument();
        geocodeXmlDoc2.Load(geocodeUrl2);
 

        XmlNamespaceManager XmlMngr1 = new XmlNamespaceManager(geocodeXmlDoc1.NameTable);
        XmlMngr1.AddNamespace("geo", @"http://www.w3.org/2003/01/geo/wgs84_pos#");
 
        XmlNamespaceManager XmlMngr2 = new XmlNamespaceManager(geocodeXmlDoc2.NameTable);
        XmlMngr2.AddNamespace("geo", @"http://www.w3.org/2003/01/geo/wgs84_pos#");
 

        String sLong1 = geocodeXmlDoc1.DocumentElement.SelectSingleNode(@"//geometry/location/lat", XmlMngr1).InnerText;
        String sLat1 = geocodeXmlDoc1.DocumentElement.SelectSingleNode(@"//geometry/location/lng", XmlMngr1).InnerText;
 
        String sLong2 = geocodeXmlDoc2.DocumentElement.SelectSingleNode(@"//geometry/location/lat", XmlMngr2).InnerText;
        String sLat2 = geocodeXmlDoc2.DocumentElement.SelectSingleNode(@"//geometry/location/lng", XmlMngr2).InnerText;
 
        Label1.Text = sLong1 + ", " + sLat1;
        Label2.Text = sLong2 + ", " + sLat2;
 

        Page.ClientScript.RegisterStartupScript(Page.GetType(), "script",
        "calcRoute()", true);
        }
 
      }

so i want to access this String sLong1, sLat1, sLong2, sLat2 in another class

let say i have harversine class

public class harversine {

        // i want to access those varables in here!!!!
           how can i do that
        
     }

Added the OP's comment from solution.

Check my value passing metod is correct or not

public partial class Login : System.Web.UI.Page
{
    //public String End_Address = string.Empty;
    public static Double elong1, elat1;
 
   public static Double Elong1
    {
        get { return Login.elong1; }
        set { Login.elong1 = value; }
    }
 
       public static Double Elat1
    {
        get { return Login.elat1; }
        set { Login.elat1 = value; }
    }
 
 public void Button1_Click(object sender, EventArgs e)
    {
 
String sLong1 = geocodeXmlDoc1.DocumentElement.SelectSingleNode(@"//geometry/location/lat", XmlMngr1).InnerText;
        String sLat1 = geocodeXmlDoc1.DocumentElement.SelectSingleNode(@"//geometry/location/lng", XmlMngr1).InnerText;
 

 
elong1 = Convert.ToDouble(sLong1);
elat1 = Convert.ToDouble(sLat1);
 
}

// this is a sample class

public class harversine
    {
 
     String loudlong1 = Convert.ToString(elong1);
     String loudlat1 = Convert.ToString(elat1);
 
       // let say i want pass Fanswer to Textbox in button click event 
     String Fanswer = loudlong1 + ", " + loudlat1;
 
}

this all are samples and i want to see if this correct or not before i'm writing a original code.

i'm a student and i'm new to the field as well. so someone please kindly help me to correct this if i'm wrong.