BmpImageSetResolution Method
Sets the resolution for this RasterImage.

Namespace: Aspose.Imaging.FileFormats.Bmp
Assembly: Aspose.Imaging (in Aspose.Imaging.dll) Version: 21.04
Syntax
public override void SetResolution(
	double dpiX,
	double dpiY
)

Parameters

dpiX
Type: SystemDouble
The horizontal resolution, in dots per inch, of the RasterImage.
dpiY
Type: SystemDouble
The vertical resolution, in dots per inch, of the RasterImage.
Examples
The following example shows how to set horizontal/vertical resolution of a BMP image.
[C#]

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

using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.bmp"))
{
    Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;

    // Get horizontal and vertical resolution of the BmpImage
    double horizontalResolution = bmpImage.HorizontalResolution;
    double verticalResolution = bmpImage.VerticalResolution;
    System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", horizontalResolution);
    System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", verticalResolution);

    if (horizontalResolution != 96.0 || verticalResolution != 96.0)
    {
        // Use the SetResolution method for updating both resolution values in a single call.
        System.Console.WriteLine("Set resolution values to 96 dpi");
        bmpImage.SetResolution(96.0, 96.0);

        System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
        System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
    }

    // The output may look like this:
    // The horizontal resolution, in pixels per inch: 0
    // The vertical resolution, in pixels per inch: 0
    // Set resolution values to 96 dpi
    // The horizontal resolution, in pixels per inch: 96.012
    // The vertical resolution, in pixels per inch: 96.012
}
Examples
The following example gets the general information about the image including pixel format, image size, resolution, compression etc.
[C#]

using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
    Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;                

    System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);                
    System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
    System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
    System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
    System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
    System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);

    double hres = bmpImage.HorizontalResolution;
    double vres = bmpImage.VerticalResolution;
    System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
    System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);

    if (hres != 96.0 || vres != 96.0)
    {
        // You may consider using the SetResolution method for updating both resolution values in single call.
        System.Console.WriteLine("Set resolution values to 96 dpi");
        bmpImage.SetResolution(96.0, 96.0);

        System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
        System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
    }

    //The output may look like this:
    //The pixel format: Rgb24Bpp, used channels: 8,8,8
    //The raw line size in bytes: 1500
    //The bitmap compression: Rgb
    //The bitmap width: 500
    //The bitmap height: 375
    //The number of bits per pixel: 24
    //The horizontal resolution, in pixels per inch: 0
    //The vertical resolution, in pixels per inch: 0
    //Set resolution values to 96 dpi
    //The horizontal resolution, in pixels per inch: 96.012
    //The vertical resolution, in pixels per inch: 96.012
}
See Also