This documentation is archived and is not being maintained.

Point4D.X Property

Gets or sets the X component of this Point4D structure.

Namespace:  System.Windows.Media.Media3D
Assembly:  PresentationCore (in PresentationCore.dll)

public double X { get; set; }
<object X="double" .../>

Property Value

Type: System.Double
The X component of this Point4D structure. The default value is 0.

This example shows how to test Point4D structures for equality and inequality.

The following code illustrates how to test Point4D structures for equality and inequality using the Point4D equality methods. The Point4D structures are tested for equality using the overloaded == operator, then for inequality using the overloaded != operator, and finally a Point3D structure and a Point4D structure are checked for equality using the static Equals method.

// instantiate Points
Point4D point4D1 = new Point4D();
Point4D point4D2 = new Point4D(15, 40, 60, 75);
Point3D point3D1 = new Point3D(15, 40, 60);

// result variables
Boolean areEqual;
Boolean areNotEqual;
String stringResult;

// defining x,y,z,w of point1
point4D1.X = 10;
point4D1.Y = 5;
point4D1.Z = 1;
point4D1.W = 4;

// checking if Points are equal
areEqual = point4D1 == point4D2;

// areEqual is False 

// checking if Points are not equal
areNotEqual = point4D1 != point4D2;
// areNotEqual is True 

if (Point4D.Equals(point4D1, point3D1))
    // the if condition is not true, so this block will not execute
    stringResult = "Both objects are Point4D structures and they are equal";

    // the if condition is false, so this branch will execute
    stringResult = "Parameters are not both Point4D strucutres, or they are but are not equal";

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0