Sending double value from one class to another in C#

Question

I wonder how I can send a double value from one class to another. I'm working with a Kinect and when the double "distance" is calculated in my public class main while I have my hand closed I wish to send that information to my other public class Monitor. Shown examples would be highly appreciated as I'm beginner in C# programming.

private void DrawHand(HandState handState, Point handPosition, DrawingContext drawingContext)
    {
        switch (handState)
        {
            case HandState.Closed:
                drawingContext.DrawEllipse(this.handClosedBrush, null, handPosition, HandSize, HandSize);
                // Distance calculation
                foreach (var body in bodies)
                {
                    // Get the positions
                    pRH = body.Joints[JointType.HandRight];
                    pLH = body.Joints[JointType.HandLeft]; // pLH gets to be "home" position in the meanwhile
                    //Some maths
                    double sqDistance = Math.Pow(pRH.Position.X - pLH.Position.X, 2) +
                        Math.Pow(pRH.Position.Y - pLH.Position.Y, 2) +
                        Math.Pow(pRH.Position.Z - pLH.Position.Z, 2);


                    // This is the information I want to send to public class Monitor
                    double distance = Math.Sqrt(sqDistance);

                }
                break;
        }
    }

Answer 1

You can send your distance variable to monitor class in many ways

1. Constructor

2. Properties

3. Method

 private void DrawHand(HandState handState, Point handPosition, DrawingContext drawingContext)
    {
        switch (handState)
        {
            case HandState.Closed:
                drawingContext.DrawEllipse(this.handClosedBrush, null, handPosition, HandSize, HandSize);
                // Distance calculation
                foreach (var body in bodies)
                {
                    // Get the positions
                    pRH = body.Joints[JointType.HandRight];
                    pLH = body.Joints[JointType.HandLeft]; // pLH gets to be "home" position in the meanwhile
                    //Some maths
                    double sqDistance = Math.Pow(pRH.Position.X - pLH.Position.X, 2) +
                        Math.Pow(pRH.Position.Y - pLH.Position.Y, 2) +
                        Math.Pow(pRH.Position.Z - pLH.Position.Z, 2);


                    // This is the information I want to send to public class Monitor
                    double distance = Math.Sqrt(sqDistance);
                    // Create object of Monitor class and pass the distance 
                    Moniotr obj = new Monitor(distance);
                   // using Method 
                    Moniotr obj = new Monitor();
                    obj.setDistance(distance);
                  // using public property
                  Moniotr obj = new Monitor();
                  obj.Distance = distance;
                }
                break;
        }
    }

Here is Sample Monitor Class With Constructor approach

public class Monitor 
{
   public Monitor(double distance)
   {
   }
}

Here is Sample Monitor Class With Method approach

public class Monitor 
    {
       public void setDistance(double distance)
       {

       }
    }

Here is Sample Monitor class with Property approach

public class Monitor 
{
  private double _distance;
  public Distance
  {
    get{return _distance;}
    set{_distance=value;}
  }
}