C# 获取数据后立即从后台进程中删除Excel工作表

我使用下面的代码从内存中释放excel工作表，但在代码运行后，excel工作表仍在后台。请帮忙

公共void加载单（bool导出，字符串projectName） {

        xlApp = new Excel.ApplicationClass();
        int rCnt = 0;           
            {

            xlWorkBook = xlApp.Workbooks.Open(@"E:/try/" + DateTime.Now.ToString("M.d.yyyy")+@"/"+ projectName+ ".xlsx", 0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", true, true, 0, true, 1, 0);
            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets["Upload Data"];
            range = xlWorkSheet.UsedRange;
            totalt.Text = range.Rows.Count.ToString();
            currentID.Text = (range.Rows.Count+1).ToString();  
          Excel.Range).Value2;              

            xlWorkBook.Close(true, null, null);
            xlApp.Quit();

            releaseObject(xlWorkSheet);
            releaseObject(xlWorkBook);
            releaseObject(xlApp);
        }

    }

private void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                MessageBox.Show("Released"+obj.ToString());
                obj = null;
            }
            catch (Exception ex)
            {
                obj = null;
                MessageBox.Show("Exception Occured while releasing object " + ex.ToString());
            }
            finally
            {
                GC.Collect();
            }
        }

---

从excel工作表中获取所需数据后，我希望将其从后台删除。

此类双点调用表达式：

xlWorkBook = xlApp.Workbooks.Open(/*args*/);
xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets["Upload Data"];

你应该换成

var workbooks = excel.Workbooks;
xlWorkBook  = workbooks.Open(/*params*/)
var worksheets = xlWorkBook.Worksheets;
xlWorkSheet = worksheets["Upload Data"];

//business logic here

Marshal.ReleaseComObject(xlWorkSheet);
Marshal.ReleaseComObject(worksheets);    
Marshal.ReleaseComObject(xlWorkBook);
Marshal.ReleaseComObject(workbooks);
Marshal.ReleaseComObject(excel);

有关详细信息，请参阅：

upd：

xlApp = new Excel.ApplicationClass();
        int rCnt = 0;           
            {

            var workbooks = xlApp.Workbooks;
            xlWorkBook = xlApp.Workbooks.Open(@"E:/try/" + DateTime.Now.ToString("M.d.yyyy")+@"/"+ projectName+ ".xlsx", 0, false, 5, "", "", false, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", true, true, 0, true, 1, 0);
            var worksheets = xlWorkBook.Worksheets;
            xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets["Upload Data"];
            range = xlWorkSheet.UsedRange;
            var rows = range.Rows;
            totalt.Text = rows.Count.ToString();
            currentID.Text = (rows.Count + 1).ToString();               

            xlWorkBook.Close(true, null, null);
            xlApp.Quit();


            Marshal.ReleaseComObject(rows);
            Marshal.ReleaseComObject(range);
            Marshal.ReleaseComObject(xlWorkSheet);
            Marshal.ReleaseComObject(worksheets);
            Marshal.ReleaseComObject(xlWorkBook);
            Marshal.ReleaseComObject(workbooks);
            Marshal.ReleaseComObject(xlApp);
        }

    }

---

你能粘贴interop excel使用的所有代码吗？另外，这是一个典型的问题，请查看代码什么意思

excel.Range）.Value2；

。此代码未编译但似乎不起作用。你能更改我给出的上述代码吗..并帮助我

excel.Workbooks a=xlApp.Workbooks；xlWorkBook=a.打开(“E:\\try\\CL.xlsx”，0，false，5，“，”，false，Microsoft.Office.Interop.Excel.XlPlatform.xlWindows，“\t”，true，false，0，true，1，0）；

然后添加了releaseObject（a），但它仍然不起作用