如何将ImageBrush转换成图像

Question

我画了一幅画布

<Canvas Grid.Row="1" Name="PaintCanvas" MouseDown="PaintCanvas_MouseDown" MouseUp="PaintCanvas_MouseUp" MouseMove="PaintCanvas_MouseMove">
        <Canvas.Background>
            <ImageBrush ImageSource="/MyNoteBook;component/Images/LinnedPage.png"/>
        </Canvas.Background>

现在，在我画完它之后，我想将它保存到文件+，希望将它转换成pictureBox、图像或c#代码中的位图。

我是怎么做到的？

已试过

ImageBrush picture = (ImageBrush)PaintCanvas.Background;
Image a = (Image)picture;
System.Drawing.Bitmap btmap = (System.Drawing.Bitmap)picture;

我在StackOverFlow和谷歌上找到的所有东西都从图像转换为imageBrush

提前谢谢你

Answer 1

ImageBrush b =  (ImageBrush)PaintCanvas.Background;
BitmapSource src = (BitmapSource)b.ImageSource;

string path = @"g:\myimg-name.jpg";
using (FileStream fs1 = new FileStream(path, FileMode.OpenOrCreate))
{
    BitmapFrame frame = BitmapFrame.Create(src);

    JpegBitmapEncoder enc = new JpegBitmapEncoder();
    enc.Frames.Add(frame);
    enc.Save(fs1);
}

Answer 2

试试下面的代码。可能对你有帮助。

if (((Grid)sender).Children.Count > 0)
        {
            gridBackground = (ImageBrush)(((Grid)sender).Background);
            System.Windows.Controls.Image gridBackImage = new System.Windows.Controls.Image();
            gridBackImage.Source = gridBackground.ImageSource;

            ImageCar.Source = gridBackImage.Source;
        }