第一个

	 

	复制代码 代码如下:

	

	System.Runtime.InteropServices.Marshal.ReleaseComObject(sheets);

	        System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet);

	        System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);

	        System.Runtime.InteropServices.Marshal.ReleaseComObject(range);
	

		 
	

		        excelApp = null;

		        wbclass = null;

		        sheets = null;

		        worksheet = null;

		        range = null;

		        GC.Collect();

		        GC.WaitForPendingFinalizers();



释放不彻底，还是有进程存在。


	 

	第二种

	 

	复制代码 代码如下:

	

	//调用底层函数获取进程标示

	    [DllImport("User32.dll")]

	    public static extern int GetWindowThreadProcessId(IntPtr hWnd, out int ProcessId);

	    private static void KillExcel(Microsoft.Office.Interop.Excel.Application theApp)

	    {

	        int id = 0;

	        IntPtr intptr = new IntPtr(theApp.Hwnd);

	        System.Diagnostics.Process p = null;

	        try

	        {

	            GetWindowThreadProcessId(intptr, out id);

	            p = System.Diagnostics.Process.GetProcessById(id);

	            if (p != null)

	            {

	                p.Kill();

	                p.Dispose();

	            }

	        }

	        catch (Exception ex)

	        {

	

	        }

	    }


这个方法比较好，我试过了可以关闭掉进程。