PngImage Constructor (PngOptions, Int32, Int32)
Initializes a new instance of the PngImage class.

Namespace: Aspose.Imaging.FileFormats.Png
Assembly: Aspose.Imaging (in Aspose.Imaging.dll) Version: 21.04
Syntax
public PngImage(
	PngOptions pngOptions,
	int width,
	int height
)

Parameters

pngOptions
Type: Aspose.Imaging.ImageOptionsPngOptions
The png options.
width
Type: SystemInt32
The width.
height
Type: SystemInt32
The height.
Examples
This example shows how to create a PNG image with the specified options, fill it with a linear gradient colors and save it to a file.
[C#]

string dir = "c:\\temp\\";

Aspose.Imaging.ImageOptions.PngOptions createOptions = new Aspose.Imaging.ImageOptions.PngOptions();

// The number of bits per color channel
createOptions.BitDepth = 8;

// Each pixel is a (red, green, blue) triple followed by the alpha component.
createOptions.ColorType = Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha;

// The maximum level of compression.
createOptions.CompressionLevel = 9;

// Usage of filters allows to compress continuous tonal images more effectively.
createOptions.FilterType = Aspose.Imaging.FileFormats.Png.PngFilterType.Sub;

// Use progressive loading
createOptions.Progressive = true;

// Create a PNG image with custom parameters.
using (Aspose.Imaging.FileFormats.Png.PngImage pngImage = new Aspose.Imaging.FileFormats.Png.PngImage(createOptions, 100, 100))
{
    Aspose.Imaging.Brushes.LinearGradientBrush gradientBrush = new Aspose.Imaging.Brushes.LinearGradientBrush(
            new Aspose.Imaging.Point(0, 0),
            new Aspose.Imaging.Point(pngImage.Width, pngImage.Height),
            Aspose.Imaging.Color.Blue,
            Aspose.Imaging.Color.Transparent);

    Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(pngImage);

    // Fill the image with a semi-transparent gradient.
    graphics.FillRectangle(gradientBrush, pngImage.Bounds);

    // Save to a file.
    pngImage.Save(dir + "output.explicitoptions.png");
}
See Also