Color.FromAValues Method (Single, Single[], Uri)


Creates a new Color structure by using the specified alpha channel, color channel values, and color profile.

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

public static Color FromAValues(
	float a,
	float[] values,
	Uri profileUri


Type: System.Single

The alpha channel for the new color,a value between 0 and 1.

Type: System.Single[]

A collection of values that specify the color channels for the new color. These values map to the profileUri.

Type: System.Uri

The International Color Consortium (ICC) or Image Color Management (ICM) color profile for the new color.

Return Value

Type: System.Windows.Media.Color

A Color structure with the specified values.

A International Color Consortium (ICC) or Image Color Management (ICM) color profile contains a color system profile for a particular application or device such as a color printer. This profile is matched to a common profile that in turn can be mapped to the individual profiles of other devices. This allows the color system used by one computer device to match the colors from other applications and devices on the same or other computer systems.

The following example shows how to use the FromAValues method to create a Color structure.

private Color FromAValuesExample()
    // Create a brown color using the FromAValues static method.
    Color myAValuesColor = new Color();
    float [] colorValues = new float[4];
    colorValues[0] = 0.0f;
    colorValues[1] = 0.5f;
    colorValues[2] = 0.5f;
    colorValues[3] = 0.5f;

    // Uri to sample color profile. This color profile is used to 
    // determine what the colors the colorValues map to.
    Uri iccUri = new Uri("C:\\sampleColorProfile.icc");

    // The FromAValues method requires an explicit value for alpha
    // (first parameter). The values given by the second parameter are
    // used with the color profile specified by the third parameter to 
    // determine the color.
    myAValuesColor = Color.FromAValues(1.0f, colorValues, iccUri);
    return myAValuesColor;

.NET Framework
Available since 3.0
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