相关疑难解决方法(0)

我在C#(ApplicationClass)中使用Excel互操作,并在我的finally子句中放置了以下代码:

while (System.Runtime.InteropServices.Marshal.ReleaseComObject(excelSheet) != 0) { }
excelSheet = null;
GC.Collect();
GC.WaitForPendingFinalizers();

虽然这种工作,Excel.exe即使我关闭Excel后,该过程仍然在后台.只有在我的应用程序手动关闭后才会发布.

我做错了什么,或者是否有其他方法可以确保互操作对象得到妥善处理？

我有一个C#控制台程序.运行时,它会实例化一些Excel对象,例如:(openExcelO).

当程序运行完毕后,我有一个关闭Excel(closeExcel)的方法,它应该正确地清理Excel进程.在任务管理器中,我可以看到剩余的Excel残余.关闭例程从互联网示例拼凑而成:

    private void openExcelO (string dir) {

        try {
            xlApp = new Excel.Application();
            xlWorkBook = xlApp.Workbooks.Open(dir + "PortfolioOptimization5.xlsm",
                0, false, 5, "", "", true, 
                Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, 
                "\t", false, false, 0, true, 1, 0);
            xlMarkowitz = (Excel.Worksheet)xlWorkBook.Sheets["Markowitz"];
            xlWeights = (Excel.Worksheet)xlWorkBook.Sheets["Weights"];

        } catch (Exception ex) {
            ReportError("PortfolioOptimization", "openExcel", ex.ToString());
        }

    }


    private void closeExcel () {
        object misValue = System.Reflection.Missing.Value;
        try {

            if (xlWeights != null) releaseObject(xlWeights);
            if (xlMarkowitz != null) releaseObject(xlMarkowitz);

            xlWorkBook.Close(false, misValue, misValue);
            if (xlApp != null) xlApp.Quit();

            if (xlWorkBook …