如何保存“CroppedBitmap" [英] How to save a "CroppedBitmap"

问题描述

我创建了一个裁剪的位图，现在我想保存它.我知道如何保存位图帧，但我不知道如何将其转换为位图帧.

I created a cropped Bitmap and now i want to save it. I know how to save a bitmapframe, but i dont know how to convert it to a bitmapframe.

代码:

' Create an Image element.
    Dim croppedImage As New Image()
    croppedImage.Width = 200
    croppedImage.Margin = New Thickness(5)

    ' Create a CroppedBitmap based off of a xaml defined resource.
    Dim cb As New CroppedBitmap(CType(screenshot, BitmapSource), New Int32Rect(X, Y, breite, höhe))
    'select region rect
    croppedImage.Source = cb 'set image source to cropped

所以我想将新图像另存为文件.

So I want to save the new Image as file.

推荐答案

我在 C# 中做了同样的事情，希望你能转换成 vb

Hi i did the same thing in C#, i hope you can convert into vb

void saveCroppedBitmap(CroppedBitmap image,string path)
{
    FileStream mStream = new FileStream(path, FileMode.Create);
    JpegBitmapEncoder jEncoder = new JpegBitmapEncoder();
    jEncoder.Frames.Add(BitmapFrame.Create(image)); 
    jEncoder.Save(mStream);
}

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