将 bitmapImage 转换为 windows 存储的字节数组

Question

我需要知道如何将位图图像转换为 windows 商店应用程序的字节数组。这是我尝试过的但它不存储 bitmapImage

    Dim file As StorageFile = Await Windows.Storage.StorageFile.GetFileFromApplicationUriAsync()
    Dim stream As IRandomAccessStream = Await file.OpenAsync(Windows.Storage.FileAccessMode.Read)
    Dim decoder As BitmapDecoder = Await BitmapDecoder.CreateAsync(stream)
    Dim pixelData As PixelDataProvider = Await decoder.GetPixelDataAsync()
    Return pixelData.DetachPixelData()

Answer 1

使用 Bitmap.Save() 将位图保存到 MemoryStream，然后保存 MemoryStream.ToArray()。也许不是最优雅的方法，但有效。稍后我可以 post 一个工作代码。

Answer 2

我找到了 :D

Async Function bitmapTObyte(ByVal bitmapimage1 As StorageFile) As Task(Of Byte())
    Dim fileBytes As Byte() = Nothing
    Using stream As IRandomAccessStreamWithContentType = Await bitmapimage1.OpenReadAsync()
        fileBytes = New Byte(stream.Size - 1) {}
        Using reader As New DataReader(stream)
            Await reader.LoadAsync(CUInt(stream.Size))
            reader.ReadBytes(fileBytes)
            Return fileBytes
        End Using
    End Using

将 bitmapImage 转换为 windows 存储的字节数组

convert a bitmapImage to byte array for windows store

c#

vb.net

windows-store

windows-store-apps