我正在尝试将Excel嵌入到WPF应用程序中。原因是，我的用户必须打开一个大型（5000+行，100 +列）只读excel，对其进行过滤，然后我必须如图所示提取这些行并进行大量的后处理。我正在尝试为此使用互操作。在这里进入教程https://www.cnblogs.com/redalert2c/articles/2760352.html，我得到以下结果-Excel在窗口中显示为嵌入式，我可以通过单击GUI中的按钮来打开文件，也可以与excel中的菜单进行交互（切换功能区）栏内容，选择下拉菜单，打开对话框...）。但是，我不能与工作表本身进行交互！在第一个选项卡中选定的单元格只是A1，我既不能选择其他选项卡，也不能滚动或过滤。可能是个问题吗？
我的代码：
public partial class ExcelView : UserControl
{
/**
* Solution based upon https://www.cnblogs.com/redalert2c/articles/2760352.html
* */
public ExcelView()
{
InitializeComponent();
Init();
// setup the Handler to ExcelView_Resize
this.Resize += new EventHandler(ExcelViewer_Resize);
}
#region Fields
private Application application;
private Process process;
public IntPtr excelHandle;
private bool initialized = false;
private Workbooks workbooks;
private Workbook workbook;
private CultureInfo threadCulture;
#endregion Fields
#region Hosting Excel Properties
public bool Saved { get { return workbook.Saved; } }
public Microsoft.Office.Interop.Excel.Application Application { get { return application; } }
public Workbook Workbook { get { return workbook; } }
#endregion Hosting Excel Properties
#region Proxy Method
public void Init()
{
threadCulture = Thread.CurrentThread.CurrentCulture;
Thread.CurrentThread.CurrentCulture = new CultureInfo("en-US");
application = new Application();
application.WindowState = XlWindowState.xlNormal;
application.Visible = true;
application.DisplayFormulaBar = true;
excelHandle = new IntPtr(application.Hwnd); // get the excelHandle, it is created in a separate process, through the use of
// Hwnd, we can get to the handle to the main Wnd
SetParent(excelHandle, this.Handle); // set the current Host as the Parent of the Excel Hwnd
int lngStyle = GetWindowLong(excelHandle, GWL_STYLE);
lngStyle = lngStyle ^ WS_CAPTION;
lngStyle = lngStyle ^ WS_SIZEBOX;
SetWindowLong(excelHandle, GWL_STYLE, lngStyle); // apply the new style
SetWindowPos(excelHandle, new IntPtr(0), 0, 0, this.Width, this.Height, SWP_FRAMECHANGED);
int pid = 0;
GetWindowThreadProcessId(excelHandle, out pid);
process = Process.GetProcessById(pid);
initialized = true; // do not initalize a second tieme
}
public void OpenFile(string fileName, bool isExclusive = true, bool isReadonly = true)
{
if (!initialized)
Init();
if (isExclusive && application.ActiveWorkbook != null) // close existing apps
application.ActiveWorkbook.Close(false); // close without saving
workbooks = application.Workbooks;
workbook = workbooks.Open(fileName, isReadonly); // Open mode - readonly
}
public void CloseExcel()
{
InternalCloseExcel();
}
private void InternalCloseExcel()
{
try
{
if (workbook != null)
{
workbook.Close(false);
Marshal.ReleaseComObject(workbooks); // take care of the ref counting?
Marshal.ReleaseComObject(workbook);
if (application != null)
{
application.Quit();
Marshal.ReleaseComObject(application);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
workbooks = null;
workbook = null;
application = null;
if (process != null && !process.HasExited)
{
process.Kill();
}
Thread.CurrentThread.CurrentCulture = threadCulture;
initialized = false;
}
}
public void KillExcel()
{
if (process != null && !process.HasExited)
{
process.Kill();
}
}
public void SaveActiveWorkbook()
{
workbook.Save();
}
public void SaveActiveBookAs(string filename)
{
Debug.Assert(!string.IsNullOrEmpty(filename));
workbook.SaveAs(filename);
}
public void SaveCopyOfActiveBookAs(string filename)
{
Debug.Assert(!string.IsNullOrEmpty(filename));
workbook.SaveCopyAs(filename);
}
#region Internal Handlers
// once the host is resized, the content should shall resize according to the new host
private void ExcelViewer_Resize(object sender, EventArgs args)
{
if (excelHandle != IntPtr.Zero)
{
SetWindowPos(excelHandle, new IntPtr(0), 0, 0, this.Width, this.Height, SWP_NOACTIVATE);
}
}
#endregion Internal Handlers
#endregion Proxy Method
#region Override
protected override void OnHandleDestroyed(EventArgs e)
{
CloseExcel();
base.OnHandleDestroyed(e);
}
#endregion Override
#region P/Invoke
private const int SWP_FRAMECHANGED = 0x0020;
private const int SWP_DRAWFRAME = 0x20;
private const int SWP_NOMOVE = 0x2;
private const int SWP_NOSIZE = 0x1;
private const int SWP_NOZORDER = 0x4;
private const int GWL_STYLE = (-16);
private const int WS_CAPTION = 0xC00000;
private const int WS_THICKFRAME = 0x40000;
private const int WS_SIZEBOX = WS_THICKFRAME;
private const int SWP_NOACTIVATE = 0x0010;
[DllImport("user32.dll", SetLastError = true)]
private static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
[DllImport("user32.dll", SetLastError = true)]
public static extern int GetWindowLong(IntPtr hWnd, int nIndex);
[DllImport("user32.dll")]
public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
[DllImport("User32", SetLastError = true)]
public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, int uFlags);
[DllImport("user32.dll", SetLastError = true)]
public static extern uint GetWindowThreadProcessId(IntPtr hWnd, out int lpdwProcessId);
#endregion P/Invoke
}
它是这样嵌入的：
<WindowsFormsHost Grid.Row="0" IsManipulationEnabled="True">
<excel:ExcelView x:Name="excel"/>
</WindowsFormsHost>
编辑：我试图删除集成到我的WPF中，只是在每个互操作的单独窗口中启动excel（注释了this.Resize行和excelHandle =行之后的Init方法），然后加载了文档-在单独的窗口中轻松地交互并在工作表中执行我想要的操作。...还不够漂亮！看起来excel工作表没有收到任何鼠标或键盘事件，或者只是