4

完成使用后，我无法关闭我的 EXCEL (32) 进程。

正如您在下面的代码中看到的那样，一旦ProcessRFAFData函数完成执行，EXCEL 进程就不会关闭（我仍然可以EXCEL.EXE*32在任务管理器中看到）。

出于这个原因，当SaveErrors开始执行时，我得到以下异常：

System.Runtime.InteropServices.COMException (0x800A03EC):   
Microsoft Office Excel cannot open or save any more documents because there is not enough available memory or disk space.   
• To make more memory available, close workbooks or programs you no longer need.   
• To free disk space, delete files you no longer need from the disk you are saving to.  
at Microsoft.Office.Interop.Excel.Workbooks.Add(Object Template)   
at NextG.RFAFImport.Layouts.NextG.RFAFImport.RFAFDataImporter.<>c__DisplayClass9.b__6()   
at Microsoft.SharePoint.SPSecurity.<>c__DisplayClass4.b__2()   
at Microsoft.SharePoint.Utilities.SecurityContext.RunAsProcess(CodeToRunElevated secureCode)   
at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(WaitCallback secureCode, Object param)   
at Microsoft.SharePoint.SPSecurity.RunWithElevatedPrivileges(CodeToRunElevated secureCode)  
at NextG.RFAFImport.Layouts.NextG.RFAFImport.RFAFDataImporter.SaveErrors()

这是执行 Excel 进程的代码：

try {
    ProcessRFAFData(FileName);
} catch (Exception ex) {
    Status = "ERROR: " + ex.ToString();
}

if (Errors.Count() > 0) {
    SaveErrors();
}

以下是与 Excel 交互的所有函数：

private void ReleaseObject(object obj) {
    try {
        System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
        obj = null;
    } catch (Exception) { } finally {
        GC.Collect();
    }
}

private void ProcessRFAFData(string FileName) {
    Microsoft.Office.Interop.Excel.Application XLA = null;
    Microsoft.Office.Interop.Excel.Workbook XLW = null;
    Microsoft.Office.Interop.Excel.Worksheet XLS = null;

    bool error = false;

    try {
        SPSecurity.RunWithElevatedPrivileges(delegate() {
            XLA = new Microsoft.Office.Interop.Excel.Application();
            XLW = XLA.Workbooks.Open(FileName, 0, true,
                Type.Missing, null, null, true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows,
                Type.Missing, false, false, Type.Missing, false, Type.Missing, Type.Missing);

            int index = RFAFTabExists(ref XLW);
            if (index == 0) return;

            XLS = (Microsoft.Office.Interop.Excel.Worksheet)XLW.Worksheets.get_Item(index);

            if (!ValidProjectID(ref XLS)) return;

            ParseData(ref XLS);

            XLW.Close(true, Type.Missing, Type.Missing);
            XLA.Quit();

            ReleaseObject(XLS);
            ReleaseObject(XLW);
            ReleaseObject(XLA);
        });
    } catch (SP.ServerException ex) {
        // output error
    } catch (Exception ex) {
        // output error
    }
}

private int RFAFTabExists(ref Microsoft.Office.Interop.Excel.Workbook XLW) {
    int index = 0;
    foreach (Microsoft.Office.Interop.Excel.Worksheet w in XLW.Worksheets) {
        if (w.Name.Equals(settings.Collection["RFAFTabName"])) index++;
    }

    return index;
}

private bool ValidProjectID(ref Microsoft.Office.Interop.Excel.Worksheet XLS) {
    using (SP.ClientContext CTX = new SP.ClientContext(SiteURL)) {
        var projectId = XLS.Cells.get_Range(settings.Collection["ProjectIDCell"], Type.Missing).Text.ToString();

        var project = // getting list of projects from SharePoint

        if (project.Count() > 0) {
            ProjectID = XLS.Cells.get_Range(settings.Collection["ProjectIDCell"], Type.Missing).Text.ToString();
            return true;
        }
    }

    return false;
}

private void ParseData(ref Microsoft.Office.Interop.Excel.Worksheet XLS) {
    ListData.Add("HID", GetHID(XLS.Cells.get_Range(settings.Collection["HIDCell"],
        Type.Missing).Text.ToString()));

    if (ListData["HID"].Equals("0")) Errors.Add(new ImportError {
        Reason = "Hub ID does not exist in this project workspace.",
        Reference = string.Format("Hub ID: {0}", XLS.Cells.get_Range(settings.Collection["HIDCell"],
        Type.Missing).Text.ToString())
    });

    int row = Int32.Parse(settings.Collection["StartRow"]);
    while (!NoMoreData(ref XLS, row)) {
        string PRSIN = XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["PRSIN"], row), Type.Missing).Text.ToString();

        string NOC = ValidateNumber(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["NOC"], row), Type.Missing).Text.ToString());

        string UEIRP = ValidateNumber(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["UEIRP"], row), Type.Missing).Text.ToString());

        string LAT = ValidateLatLon(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["LAT"], row), Type.Missing).Text.ToString());

        string LON = ValidateLatLon(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["LON"], row), Type.Missing).Text.ToString());

        string PJ = GetPJ(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["JurisdictionCol"], row), Type.Missing).Text.ToString(),
            XLS.Cells.get_Range(string.Format("{0}{1}", settings.Collection["StateCol"], row),
            Type.Missing).Text.ToString());

        string ST = GetState(XLS.Cells.get_Range(string.Format("{0}{1}",
            settings.Collection["JurisdictionCol"], row), Type.Missing).Text.ToString(),
            XLS.Cells.get_Range(string.Format("{0}{1}", settings.Collection["StateCol"], row),
            Type.Missing).Text.ToString());

        ListItemData.Add(new ListItem {
            ProposedRemoteSiteItemNumber = PRSIN,
            NumberOfCarriers = NOC,
            UsableEIRP = UEIRP,
            Latitude = LAT,
            Longitude = LON,
            PrimaryJurisdiction = PJ,
            State = ST
        });

        row++;
    }
}

private bool NoMoreData(ref Microsoft.Office.Interop.Excel.Worksheet XLS, int row) {
    return string.IsNullOrEmpty(XLS.Cells.get_Range(string.Format("{0}{1}",
        settings.Collection["ProposedRemoteSiteItemNumberCol"], row), Type.Missing).Text.ToString());
}

private void SaveErrors() {
    Microsoft.Office.Interop.Excel.Application XLA = null;
    Microsoft.Office.Interop.Excel.Workbook XLW = null;
    Microsoft.Office.Interop.Excel.Worksheet XLS = null;

    object MissingValue = System.Reflection.Missing.Value;

    try {
        try {
            SPSecurity.RunWithElevatedPrivileges(delegate() {
                XLA = new Microsoft.Office.Interop.Excel.Application();
                XLW = XLA.Workbooks.Add(MissingValue);
                XLS = (Microsoft.Office.Interop.Excel.Worksheet)XLW.Worksheets.get_Item(1);

                XLS.Cells[1, 1] = "Reason for error";
                XLS.Cells[1, 2] = "Reference";

                XLS.get_Range("A1").Font.Bold = true;
                XLS.get_Range("B1").Font.Bold = true;

                int row = 2;
                foreach (ImportError e in Errors) {
                    XLS.Cells[row, 1] = e.Reason;
                    XLS.Cells[row, 2] = e.Reference;

                    row++;
                }

                XLW.SaveAs(ErrorLogFileName, Microsoft.Office.Interop.Excel.XlFileFormat.xlWorkbookNormal,
                    MissingValue, MissingValue, MissingValue, MissingValue,
                    Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, MissingValue,
                    MissingValue, MissingValue, MissingValue, MissingValue);

                XLW.Close(true, MissingValue, MissingValue);
                XLA.Quit();

                ReleaseObject(XLS);
                ReleaseObject(XLW);
                ReleaseObject(XLA);
            });
        } catch (Exception ex) {
            Status = "ERROR: " + ex.ToString();
        }

        // Uploading excel file to SharePoint document library

    } catch (Exception) { }
}
4

7 回答 7

3

如果出现异常，请在 finally 块中释放您的 Excel 对象。

try
{
...
}
catch
{
...
}
finally
{
  ReleaseObject(XLS);
  ReleaseObject(XLW);
  ReleaseObject(XLA);
}
于 2011-08-05T18:10:32.557 回答
3

你可能不得不去荒谬地明确：

excelWorkbook.Close (false, System.Reflection.Missing.Value,System.Reflection.Missing.Value) ;   
excelWorkbooks.Close();  
excelApp.Quit();  
Marshal.ReleaseComObject(excelWorksheet);  
Marshal.ReleaseComObject(excelSheets);  
Marshal.ReleaseComObject(excelWorkbooks);  
Marshal.ReleaseComObject(excelWorkbook);  
Marshal.ReleaseComObject(excelApp);  
excelWorksheet = null;  
excelSheets = null;  
excelWorkbooks = null;  
excelWorkbook = null;  
excelApp = null;  
GC.GetTotalMemory(false);  
GC.Collect();  
GC.WaitForPendingFinalizers();  
GC.Collect();  
GC.GetTotalMemory(true);

我遇到过即使那样也没有做到的情况。我求助于寻找 Excel 进程并在其上调用 Kill()。

于 2011-08-05T18:15:40.140 回答
1

第一个建议：http ://code.google.com/p/excellibrary这是一个很棒的库，我使用它并取得了很大的成功。

第二个建议：如果你绝对必须关闭 Excel

/// <summary>
/// Gets all currently running instances of Excel, so we don't kill active windows.
/// </summary>
private void GetInstancesToSave()
{
    if (_instancesToSaveList != null)
    {
        _instancesToSaveList.Clear();
    }
    _instancesToSaveList = Process.GetProcesses().ToList<Process>();
    _instancesToSaveList = _instancesToSaveList.FindAll(proc => proc.ProcessName == "EXCEL");
}

/// <summary>
/// Kills any instances of Excel that were created by the program.
/// </summary>
/// <param name="zInstancesToSave">Instances that were not </param>
private static void KillExcel(List<Process> zInstancesToSave)
{
    List<Process> xProcesslist = Process.GetProcesses().ToList<Process>();
    xProcesslist = xProcesslist.FindAll(proc => proc.ProcessName == "EXCEL");
    foreach (Process xTheprocess in xProcesslist)//read through all running programs
    {
        bool killit = true;
        foreach (Process proc in zInstancesToSave)//read through all running programs
        {
            if (xTheprocess.Id == proc.Id)
            {
                killit = false;
            }
        }
        if (killit)
        {
            xTheprocess.Kill();
        }
    }
}

您可以使用这两种方法来跟踪启动时正在运行的 excel 实例，然后找到您的应用程序打开的任何 Excel 实例，然后终止它们。这当然不是一个很好的解决方案，但有时你只需要硬着头皮。

如果您不关心先前的实例，您也可以这样做：

/// <summary>
/// Kills any instances of Excel that were created by the program.
/// </summary>
/// <param name="zInstancesToSave">Instances that were not </param>
private static void KillExcel(List<Process> zInstancesToSave)
{
    List<Process> xProcesslist = Process.GetProcesses().ToList<Process>();
    xProcesslist = xProcesslist.FindAll(proc => proc.ProcessName == "EXCEL");
    foreach(Proc process in xProcesslist)
    {
        process.Kill();
    }
}
于 2011-08-05T18:46:55.720 回答
0

我会考虑使用Code Plex 的EPPlus。
这个例子展示了如何读取数据。在走这条路的服务器上，你总是更好——唯一的问题是如果你需要调用公式——那么这种方法就行不通了。
您的大部分代码将与您当前的代码非常相似，因此我估计需要几个小时才能迁移到这个库。

于 2011-08-05T18:19:14.280 回答
0

就我而言，Excel 加载项位于我之前创建的单独 AppDomain 中，但是当加载项卸载时，我从未调用过：

childDomain.Unload();

一旦被调用，Excel Zombie 进程就不再存在了......

于 2012-11-07T15:03:56.153 回答
0

除了上述解决方案，这里是我的逻辑解决方案。我在想为什么我有这么多 EXCEL.EXE 应用程序并以这种方式处理。在这里，我在创建新 Excel 应用程序时检查条件。if (_masterApp == null) _masterApp = new EXCEL.Application(); 如果要创建的变量为 Null，则仅创建 Excel 应用程序的新实例，否则重新分配现有变量。

并使用本博客中提到的解决方案关闭 _masterApp。

好处：这样您只会关闭您通过解决方案打开的 EXCEL 应用程序，而不会关闭手动打开的 Excel 应用程序。

于 2014-12-02T19:41:43.197 回答
0

看看这个链接

杀死进程 Excel C#

感谢KD7的解决方案。

一个小的修改是，如果您的 excelapp 不可见，您的主窗口标题将为空白。例如。“”

private void KillSpecificExcelFileProcess(string excelFileName)
    {
        var processes = from p in Process.GetProcessesByName("EXCEL")
                        select p;

        foreach (var process in processes)
        {
            MessageBox.Show(process.MainWindowTitle);
            if (process.MainWindowTitle == excelFileName)
            {

            process.Kill();
            }
        }
    }

并杀死所有僵尸excel后台进程'

KillSpecificExcelFileProcess("");

这给我解决了无穷无尽的麻烦，所以我将把它发布在每个僵尸 excel 进程线程上。

于 2018-06-28T00:41:15.537 回答