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Color.FromArgb Method

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

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

public static Color FromArgb(
	byte a,
	byte r,
	byte g,
	byte b
)

Parameters

a
Type: System.Byte

The alpha channel, A, of the new color.

r
Type: System.Byte

The red channel, R, of the new color.

g
Type: System.Byte

The green channel, G, of the new color.

b
Type: System.Byte

The blue channel, B, of the new color.

Return Value

Type: System.Windows.Media.Color
A Color structure with the specified values.

The FromArgb method allows you to specify the alpha channel; the FromRgb method uses a default value of 255 for the alpha channel.

The alpha channel of a color determines the amount of transparency of the color. An alpha value of 255 indicates that the color is completely opaque, and a value of 0 indicates that the color is completely transparent.

private Color FromArgbExample()
{
    // Create a blue color using the FromArgb static method.
    Color myArgbColor = new Color();
    myArgbColor = Color.FromArgb(255, 0, 255, 0);
    return myArgbColor;
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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