Question

我创建了一个程序来自动填写发票excel文件，以便以后可以打印。我能够填充单元格并格式化它们。但是excel进程仍然在后台运行。

TypeError: Type error

我无法从后台杀死excel进程。我不确定我做错了什么。上面的代码是我为自动化excel所做的全部工作。请帮助我。

Answer 1

我所做的是为Excel对象使用Initializer和Deinitializer，如下所示：

private void InitializeExcelObjects()
{
    _xlApp = new Excel.Application
    {
        SheetsInNewWorkbook = 2,
        StandardFont = "Tahoma",
        StandardFontSize = 11
    };

    _xlBook = _xlApp.Workbooks.Add(Type.Missing);
    _xlApp.Windows.Application.ActiveWindow.DisplayGridlines = false;

    _xlSheets = _xlBook.Worksheets;
    _xlSheet = (Excel.Worksheet)_xlSheets.Item[1];
    _xlSheetDelPerf = (Excel.Worksheet)_xlSheets.Item[2];
}

private void DeinitializeExcelObjects()
{
    Marshal.ReleaseComObject(_xlSheet);
    Marshal.ReleaseComObject(_xlSheetDelPerf);

    Marshal.ReleaseComObject(_xlSheets);

    _xlBook.Close(false, null, null); 
    Marshal.ReleaseComObject(_xlBook);

    _xlApp.DisplayAlerts = false;
    _xlApp.Quit();
    Marshal.ReleaseComObject(_xlApp);
    _xlApp = null;
}

他们被这样称呼：

public void GenerateDuckbilledPlatypusRpt()
{
    try
    {
        InitializeExcelObjects();
        . . . // all the Excel generation code goes here
    }
    finally
    {
        DeinitializeExcelObjects();
    }
}

IOW，我认为您可以将代码更改为以下内容：

public void Write(tbl_Sale sale,List<SalesModel> saleCollection)
{  
    Mouse.SetCursor(Cursors.Wait);
    Excel.Application application = null;
    Workbook workbook = null;
    Worksheet inputSheet = null;
    Range range = null;

    try
    {
        . . .
        InitializeExcelObjects();
        . . .
    }
    finally
    {
       DeinitializeExcelObjects();
       Mouse.SetCursor(Cursors.Arrow);
    }
}

private void InitializeExcelObjects()
{    
    application = new Excel.Application();

    workbook = application.Workbooks.Add(Type.Missing);

    sheets = workbook.Worksheets;
    inputSheet = (Excel.Worksheet)sheets.Item[1];
}

private void DeinitializeExcelObjects()
{
    Marshal.ReleaseComObject(inputSheet);

    Marshal.ReleaseComObject(sheets);

    workbook.Close(false, null, null); 
    Marshal.ReleaseComObject(workbook);

    application.DisplayAlerts = false;
    application.Quit();
    Marshal.ReleaseComObject(application);
    application = null;
}

对我有用; YMMV

Answer 2

看到这个答案： How do I properly clean up Excel interop objects?

您正在使用releaseObject(application)，但这似乎指的是您没有显示的某种方法。不知道那里有什么代码。

除了注意链接问题中的注意事项外，请尝试使用Marshal.ReleaseComObject(application)。

C＃ - 如何以编程方式杀死在后台运行的excel进程

2 个答案: