如何打开一个Excel文件并在WPF中查看？
我使用我的C＃应用程序创build一些Excel文件，并保存在我的电脑。 我想在应用程序中打开并查看它们，我该怎么做？ 我的应用程序是使用WPF C＃
您可以使用DocumentViewer WPF控件。
首先，你应该把你的office document转换成XPS格式。 请看这个post 。
然后将其绑定到DocumentViewer控件的Document属性。
XAML
<DocumentViewer Name="myDocumentViewer" Margin="0,0,0,59"> </DocumentViewer>
代码在后面
myDocumentViewer.Document = this.ConvertPptxDocToXPSDoc(this.FileName, this.newXPSDocumentName).GetFixedDocumentSequence();
您可以利用预览处理程序机制。 这里是我主持一个预览处理程序的控制：
public class FilePreviewControl : HwndHost { private const int Child = 0x40000000, Visible = 0x10000000, HostId = 0x00000002, ClipChild = 0x02000000; public static readonly DependencyProperty PathProperty = DependencyProperty.Register( "Path", typeof (string), typeof (FilePreviewControl), new UIPropertyMetadata(Update)); public static readonly DependencyProperty ExtensionProperty = DependencyProperty.Register( "Extension", typeof (string), typeof (FilePreviewControl), new UIPropertyMetadata(Update)); public static readonly DependencyProperty SourceStreamProperty = DependencyProperty.Register( "SourceStream", typeof (Stream), typeof (FilePreviewControl), new UIPropertyMetadata(Update)); private readonly PreviewManager manager; private IntPtr hwndHost; public FilePreviewControl() { this.manager = new PreviewManager(); } public Stream SourceStream { get { return (Stream) this.GetValue(SourceStreamProperty); } set { this.SetValue(SourceStreamProperty, value); } } public string Extension { get { return (string) this.GetValue(ExtensionProperty); } set { this.SetValue(ExtensionProperty, value); } } public string Path { get { return (string) this.GetValue(PathProperty); } set { this.SetValue(PathProperty, value); } } private static void Update(DependencyObject d, DependencyPropertyChangedEventArgs e) { ((FilePreviewControl) d).RefreshPreview(); } protected override HandleRef BuildWindowCore(HandleRef hwndParent) { this.hwndHost = IntPtr.Zero; this.hwndHost = CreateWindowEx(0, "static", "", Child | Visible | ClipChild, 0, 0, (int) this.ActualWidth, (int) this.ActualHeight, hwndParent.Handle, (IntPtr) HostId, IntPtr.Zero, 0); this.RefreshPreview(); return new HandleRef(this, this.hwndHost); } protected override void DestroyWindowCore(HandleRef hwnd) { DestroyWindow(hwnd.Handle); this.manager.Dispose(); } protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo) { base.OnRenderSizeChanged(sizeInfo); var rect = new Rect(new Size(this.ActualWidth, this.ActualHeight)); this.manager.InvalidateAttachedPreview(rect); } protected override IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) { handled = false; return IntPtr.Zero; } [DllImport("user32.dll", EntryPoint = "CreateWindowEx", CharSet = CharSet.Unicode)] private static extern IntPtr CreateWindowEx( int dwExStyle, string lpszClassName, string lpszWindowName, int style, int x, int y, int width, int height, IntPtr hwndParent, IntPtr hMenu, IntPtr hInst, [MarshalAs(UnmanagedType.AsAny)] object pvParam); [DllImport("user32.dll", EntryPoint = "DestroyWindow", CharSet = CharSet.Unicode)] private static extern bool DestroyWindow(IntPtr hwnd); private void RefreshPreview() { if (this.hwndHost == IntPtr.Zero) return; var filePath = this.Path; var extension = this.Extension; if (string.IsNullOrEmpty(extension) && !string.IsNullOrEmpty(filePath)) extension = System.IO.Path.GetExtension(filePath); var shouldBeDeactivated = this.Visibility != Visibility.Visible || (string.IsNullOrEmpty(filePath) || !File.Exists(filePath)) && this.SourceStream == null || string.IsNullOrEmpty(extension); if (shouldBeDeactivated) { this.manager.Detach(); return; } var rect = new Rect(new Size(this.RenderSize.Width, this.RenderSize.Height)); try { this.manager.AttachPreview( this.hwndHost, rect, extension, filePath, this.SourceStream); } catch (Exception exception) { Trace.TraceError(exception.ToString()); } } public static bool CanPreview(string extension) { return PreviewManager.GetPreviewHandlerKey(extension) != null; } #region Nested type: InteropStream private sealed class InteropStream : IStream, IDisposable { private readonly Stream stream; private bool disposed; public InteropStream(Stream sourceStream) { if (sourceStream == null) throw new ArgumentNullException("sourceStream"); this.stream = sourceStream; } #region IDisposable Members public void Dispose() { this.Dispose(true); GC.SuppressFinalize(this); } #endregion #region IStream Members public void Clone(out IStream ppstm) { throw new NotSupportedException(); } public void Commit(int grfCommitFlags) { throw new NotSupportedException(); } public void CopyTo(IStream pstm, long cb, IntPtr pcbRead, IntPtr pcbWritten) { throw new NotSupportedException(); } public void LockRegion(long libOffset, long cb, int dwLockType) { throw new NotSupportedException(); } [SecurityCritical] public void Read(byte[] pv, int cb, IntPtr pcbRead) { var count = this.stream.Read(pv, 0, cb); if (pcbRead != IntPtr.Zero) Marshal.WriteInt32(pcbRead, count); } public void Revert() { throw new NotSupportedException(); } [SecurityCritical] public void Seek(long dlibMove, int dwOrigin, IntPtr plibNewPosition) { var origin = (SeekOrigin) dwOrigin; var pos = this.stream.Seek(dlibMove, origin); if (plibNewPosition != IntPtr.Zero) Marshal.WriteInt64(plibNewPosition, pos); } public void SetSize(long libNewSize) { this.stream.SetLength(libNewSize); } public void Stat(out STATSTG pstatstg, int grfStatFlag) { pstatstg = new STATSTG { type = 2, cbSize = this.stream.Length, grfMode = 0 }; if (this.stream.CanRead && this.stream.CanWrite) pstatstg.grfMode |= 2; else if (this.stream.CanWrite && !this.stream.CanRead) pstatstg.grfMode |= 1; else throw new IOException(); } public void UnlockRegion(long libOffset, long cb, int dwLockType) { throw new NotSupportedException(); } [SecurityCritical] public void Write(byte[] pv, int cb, IntPtr pcbWritten) { this.stream.Write(pv, 0, cb); if (pcbWritten != IntPtr.Zero) Marshal.WriteInt32(pcbWritten, cb); } #endregion private void Dispose(bool disposing) { if (this.disposed) return; if (disposing && this.stream != null) this.stream.Dispose(); this.disposed = true; } ~InteropStream() { this.Dispose(false); } } #endregion private sealed class TempFile : IDisposable { private string path; public TempFile() : this(System.IO.Path.GetTempFileName()) { } private TempFile(string path) { if (string.IsNullOrEmpty(path)) throw new ArgumentNullException("path"); this.path = path; } public string Path { get { if (this.path == null) throw new ObjectDisposedException(this.GetType().Name); return this.path; } } #region IDisposable Members public void Dispose() { this.Dispose(true); } #endregion private void Dispose(bool disposing) { if (disposing) GC.SuppressFinalize(this); if (this.path == null) return; try { File.Delete(this.path); } catch { Trace.TraceWarning("Can't delete file " + this.path); } // best effort this.path = null; } ~TempFile() { this.Dispose(false); } } #region Nested type: PreviewManager private sealed class PreviewManager : IDisposable { private IPreviewHandler currentHandler; private bool disposed; private InteropStream stream; #region IDisposable Members public void Dispose() { this.DisposeInternal(); GC.SuppressFinalize(this); } #endregion public void AttachPreview(IntPtr handler, Rect viewRect, string extension, string filePath, Stream sourceStream) { this.Unload(); var classKey = GetPreviewHandlerKey(extension); if (classKey == null) return; var guid = new Guid(classKey.GetValue(string.Empty).ToString()); var type = Type.GetTypeFromCLSID(guid, true); var instance = Activator.CreateInstance(type); var fileInit = instance as IInitializeWithFile; var streamInit = instance as IInitializeWithStream; if (streamInit != null && sourceStream != null) { this.stream = new InteropStream(sourceStream); streamInit.Initialize(this.stream, 0); } else if (fileInit != null) if (filePath != null) fileInit.Initialize(filePath, 0); else if (sourceStream != null) using (var tempFile = new TempFile()) { using (var fileStream = File.Create(tempFile.Path)) sourceStream.CopyTo(fileStream); fileInit.Initialize(tempFile.Path, 0); } else return; else return; this.currentHandler = instance as IPreviewHandler; if (this.currentHandler == null) { this.Unload(); return; } var rect = new ShellRect(viewRect); this.currentHandler.SetWindow(handler, ref rect); this.currentHandler.SetRect(ref rect); try { this.currentHandler.DoPreview(); } catch { this.Unload(); throw; } } internal static RegistryKey GetPreviewHandlerKey(string extension) { var commonGuid = new Guid("8895b1c6-b41f-4c1c-a562-0d564250836f"); var classKey = Registry.ClassesRoot.OpenSubKey(string.Format(@"{0}\ShellEx\{1:B}", extension, commonGuid)); return classKey; } public void Detach() { this.Unload(); } public void InvalidateAttachedPreview(Rect viewRect) { if (this.currentHandler == null) return; var rect = new ShellRect(viewRect); this.currentHandler.SetRect(ref rect); } private void DisposeInternal() { if (this.disposed) return; this.Unload(); this.disposed = true; } private void Unload() { if (this.currentHandler != null) { this.currentHandler.Unload(); Marshal.FinalReleaseComObject(this.currentHandler); this.currentHandler = null; } if (this.stream != null) { this.stream.Dispose(); this.stream = null; } } ~PreviewManager() { this.DisposeInternal(); } #region Nested type: IInitializeWithFile [ComImport] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] [Guid("b7d14566-0509-4cce-a71f-0a554233bd9b")] internal interface IInitializeWithFile { void Initialize([MarshalAs(UnmanagedType.LPWStr)] string pszFilePath, uint grfMode); } #endregion #region Nested type: IInitializeWithStream [ComImport] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] [Guid("b824b49d-22ac-4161-ac8a-9916e8fa3f7f")] internal interface IInitializeWithStream { void Initialize(IStream pstream, uint grfMode); } #endregion #region Nested type: IPreviewHandler [ComImport] [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] [Guid("8895b1c6-b41f-4c1c-a562-0d564250836f")] internal interface IPreviewHandler { void SetWindow(IntPtr hwnd, ref ShellRect rect); void SetRect(ref ShellRect rect); void DoPreview(); void Unload(); void SetFocus(); void QueryFocus(out IntPtr phwnd); [PreserveSig] uint TranslateAccelerator(ref MSG pmsg); } #endregion #region Nested type: ShellRect [StructLayout(LayoutKind.Sequential)] internal struct ShellRect { public readonly int left; public readonly int top; public readonly int right; public readonly int bottom; public ShellRect(Rect rect) { this.top = (int) rect.Top; this.bottom = (int) rect.Bottom; this.left = (int) rect.Left; this.right = (int) rect.Right; } } #endregion } #endregion }
这里是如何使用它：
<local:FilePreviewControl Path="Book1.xlsx" />
只有在您的计算机上安装了Microsoft Office，它才能正常工作。