VerticalOptions = LayoutOptions.CenterAndExpand HorizontalOptions = LayoutOptions.Center, ImageButton imageButton = new ImageButton The following example shows how to create a page that is functionally equivalent to the previous XAML example, but entirely in C#: public class ImageButtonDemoPage : ContentPage
While an ImageButton can load an animated GIF, it will only display the first frame of the GIF. For more information about ImageButton appearance, see ImageButton appearance.
In this example it's set to a local file that will be loaded from each platform project, resulting in the following screenshots:īy default, the ImageButton is rectangular, but you can give it rounded corners by using the CornerRadius property. The Source property specifies the image that appears in the ImageButton. The following example shows how to instantiate a ImageButton in XAML: For more information about loading images from different sources, see Images in Xamarin.Forms. ImageButton defines a Source property that should be set to the image to display in the button, with the image source being either a file, a URI, a resource, or a stream. The code examples in this guide are taken from the FormsGallery sample. However, this just serves to confuse things further as the DPI (or PPI) value is only relevant (in practice) outside of the digital world.While the Button view defines an Image property, that allows you to display a image on the Button, this property is intended to be used when displaying a small icon next to the Button text. A printer produces dots and a monitor produces pixels, so this name attempts to provide context when an image is digital. One other thing to note is that the DPI value of a digital image is sometimes also referred to as PPI (or Pixels Per Inch). You may change your DPI to any value you like. This tool supports JPG, PNG, TIF, BMP and ICO. However, it is much simpler to change the DPI of an image using the tool provided above. The printer would then output a larger number of dots for every inch, resulting in a sharper image.Īn image DPI value may be changed by opening the file inside MS (Microsoft) Paint, Adobe Photoshop or Illustrator. For example, a printing shop may request that a photo is submitted with 300 DPI rather than 72 DPI. The DPI value is read by some devices (such as printers) to determine how your image should be presented on a medium (such as paper). The actual quality (resolution) of the image (within the file itself) is not affected when its DPI value is adjusted. The DPI (dots per inch) of an image is simply metadata embedded inside the image (header).
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