由於wpf的UI使用xaml來表達的，所以我們們可利用這個優點，把WPF中的xaml元素另存為各樣的檔案，在很多時候我們都不須要這樣的操作。把xaml儲存為圖片、字串、XPS等等。這裡我寫了一些方法，以供大家參考.。

注意：以下儲存操作前，一定要確保引數中的canvas有高和寬。

1.把canvas儲存為文字檔案

using System.IO;
public void Export(Uri path, Canvas surface)
{
      if (path == null) return;
      if (surface == null) return;
      string xaml = XamlWriter.Save(surface);
      File.WriteAllText(path.LocalPath, xaml);
 

}

2.把canvas儲存為xps檔案,xps名稱空間在ReachFramework.dll中

using System.IO.Packaging;

using System.Windows.Xps;

using System.Windows.Xps.Packaging;

using System.IO;

public void Export(Uri path, Canvas surface)

{

    if (path == null) return;

    Transform transform = surface.LayoutTransform;

    surface.LayoutTransform = null
 
;

    Size size = new Size(surface.Width, surface.Height);

    surface.Measure(size);

    surface.Arrange(new Rect(size));

    Package package = Package.Open(path.LocalPath, FileMode.Create);

    XpsDocument doc = new XpsDocument(package);

    XpsDocumentWriter writer = XpsDocument.CreateXpsDocumentWriter(doc);

    writer.Write(surface);

    doc.Close();

    package.Close();

    surface.LayoutTransform = transform;

}

3.把canvas儲存為圖片

public void ExportToPng(Uri path, Canvas surface)

{

    if (path == null) return;

    Transform transform = surface.LayoutTransform;

    surface.LayoutTransform = null;

    Size size = new Size(surface.Width, surface.Height);

    surface.Measure(size);

     surface.Arrange(new Rect(size));

    RenderTargetBitmap renderBitmap =

     new RenderTargetBitmap(

      (int)size.Width,

     (int)size.Height,

     96d,

       96d,

       PixelFormats.Pbgra32);

    renderBitmap.Render(surface);

    using (FileStream outStream = new FileStream(path.LocalPath, FileMode.Create))

     {

        PngBitmapEncoder encoder = new PngBitmapEncoder();

        encoder.Frames.Add(BitmapFrame.Create(renderBitmap));

         encoder.Save(outStream);

      }

         surface.LayoutTransform = transform;

   }

這幾種都是WPF for win中使用的，希望能對你有所幫助。