BmpBitmapDecoder Class
Defines a decoder for bitmap (BMP) encoded images.
Assembly: PresentationCore (in PresentationCore.dll)
The following examples show how to decode and encode a bitmap (BMP) image using the specific BmpBitmapDecoder and BmpBitmapEncoder objects. For the complete sample, see BMP Encoder and Decoder Sample.
This example demonstrates how to decode a BMP image using a BmpBitmapDecoder from a Uri.
' Open a Uri and decode a BMP image Dim myUri As New Uri("tulipfarm.bmp", UriKind.RelativeOrAbsolute) Dim decoder2 As New BmpBitmapDecoder(myUri, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default) Dim bitmapSource2 As BitmapSource = decoder2.Frames(0) ' Draw the Image Dim myImage2 As New Image() myImage2.Source = bitmapSource2 myImage2.Stretch = Stretch.None myImage2.Margin = New Thickness(20)
This example demonstrates how to encode a BitmapSource into a BMP image using a BmpBitmapEncoder.
Dim width As Integer = 128 Dim height As Integer = width Dim stride As Integer = CType(width / 8, Integer) Dim pixels(height * stride) As Byte ' Try creating a new image with a custom palette. Dim colors As New List(Of System.Windows.Media.Color)() colors.Add(System.Windows.Media.Colors.Red) colors.Add(System.Windows.Media.Colors.Blue) colors.Add(System.Windows.Media.Colors.Green) Dim myPalette As New BitmapPalette(Colors) ' Creates a new empty image with the pre-defined palette Dim image As BitmapSource = System.Windows.Media.Imaging.BitmapSource.Create(width, height, 96, 96, PixelFormats.Indexed1, myPalette, pixels, stride) Dim stream As New FileStream("new.bmp", FileMode.Create) Dim encoder As New BmpBitmapEncoder() Dim myTextBlock As New TextBlock() myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString() encoder.Frames.Add(BitmapFrame.Create(image)) encoder.Save(stream)
System.Windows.Threading.DispatcherObject
System.Windows.Media.Imaging.BitmapDecoder
System.Windows.Media.Imaging.BmpBitmapDecoder
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.