PngInterlaceOption Enumeration
Specifies whether a Portable Network Graphics (PNG) format image is interlaced during encoding.
Assembly: PresentationCore (in PresentationCore.dll)
| Member name | Description | |
|---|---|---|
| Default | The PngBitmapEncoder determines whether the image should be interlaced. | |
| On | The resulting bitmap image is interlaced. | |
| Off | The resulting bitmap image is not interlaced. |
Interlacing refers to the process of displaying a PNG frame in two fields. One field contains the even lines of the frame, while the other field contains the odd lines of the frame. When the PNG is viewed, the lines in one field are displayed first, and then the lines in the second field are displayed.
The following example demonstrates how to use the Interlace property of the PngBitmapEncoder class.
Dim stream As New FileStream("new.png", FileMode.Create) Dim encoder As New PngBitmapEncoder() Dim myTextBlock As New TextBlock() myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString() encoder.Interlace = PngInterlaceOption.On encoder.Frames.Add(BitmapFrame.Create(image)) encoder.Save(stream)
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.