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请问，有什么方法可以将给定列的单元格（行）的内容相加（汇总），其可能的行（单元格）数是动态的，即行数不固定，在一个excel工作表？我一直在尝试没有任何有意义的结果，我尝试使用偏移量但不断从 HRESULT blah blah 获得一些 COM_Exception ......

下面是我试图用来实现我的目的的演示代码的一部分。

请任何建议（带有代码片段）将不胜感激。

 private void button1_Click(object sender, RoutedEventArgs e)

       {


        excel.Application xlApp;

        excel.Workbook xlWorkBook;

        excel.Worksheet xlWorkSheet;


        object misValue = System.Reflection.Missing.Value;



        xlApp = new excel.Application();

        var MyExcel = new excel.Application();

        xlWorkBook = xlApp.Workbooks.Add(misValue);



        xlWorkSheet = (excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

        excel.Range chartRange;
        chartRange = xlWorkSheet.get_Range("$A:$A", Type.Missing);

        xlWorkSheet.Cells[1, 1] = "Temperature(deg)";
        xlWorkSheet.Cells[1, 2] = "Humidity(m-3)";
        xlWorkSheet.Cells[1, 3] = "Wind Speed(m/s)";
        xlWorkSheet.Cells[2, 1] = 33;
        xlWorkSheet.Cells[2, 2] = 45;
        xlWorkSheet.Cells[2, 3] = 34;
        xlWorkSheet.Cells[3, 1] = 23;
        xlWorkSheet.Cells[3, 2] = 26;
        xlWorkSheet.Cells[3, 3] = 43;
        xlWorkSheet.Cells[4, 1] = 45;
        xlWorkSheet.Cells[4, 2] = 24;
        xlWorkSheet.Cells[4, 3] = 34;
        xlWorkSheet.Cells[5, 1] = 40;
        xlWorkSheet.Cells[5, 2] = 32;
        xlWorkSheet.Cells[5, 3] = 42;



        decimal fdt = 0;
        int i = 2;

        excel.Range targetRange = (excel.Range)xlWorkSheet.Cells[2, 1];

        while (xlWorkSheet.Cells.Offset[i, 0].Value2 != null)
        {
            i++;
            fdt += xlWorkSheet.Cells.Offset[i, 0].Value2;
        }

        MessageBox.Show(fdt.ToString());

  excel.ChartObjects xlCharts = (excel.ChartObjects)xlWorkSheet.ChartObjects(Type.Missing);
  excel.ChartObject myChart = (excel.ChartObject)xlCharts.Add(400, 50, 400, 300);
  excel.Chart chartPage = myChart.Chart;      
  chartPage.SetSourceData(chartRange, misValue);
  chartPage.ChartType = excel.XlChartType.xl3DColumnClustered;

  try
  {
      myChart.Chart.HasTitle = true;
      excel.Range objRange = (excel.Range)xlWorkSheet.Cells["$A:$A", Type.Missing];

      String strData = objRange.get_Value(misValue).ToString();

      myChart.Chart.ChartTitle.Text = strData;


  }
  catch (Exception ex)
  {
      MessageBox.Show(ex.ToString());
  }

             xlWorkBook.SaveAs("DemoChart_1.xls", excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue,

    excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);


             xlApp.Visible = true;



    }
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2 回答 2

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I don't believe that xlWorkSheet.Cells.Offset[i, 0].Value2 is valid. Instead of using Offset, just stick with Cells(i, 1).Value2. Let me know if that works for you.

于 2012-04-30T04:46:28.513 回答
1

没关系，我自己已经能够做到了。对于任何可能像我一样被这种问题困扰的人，给你：

            int numRows = 0;
            double sum = 0;
            double Average = 0;
            excel.Range count = xlWorkSheet.UsedRange.Columns["A", misValue] as excel.Range;
            foreach (excel.Range cell in count.Cells)
            {
                if (cell.Value2 != null && cell.Value2 is double?)

                 {
                    sum += cell.Value2;
                    numRows += 1;
                }

            }


            Average = sum / numRows;
           txtAverage.Text = Average.ToString();

//“&&”是非常必要的，以避免将单元格的值（可能是一个字符串——比如列的标题）加倍，以避免出错。

于 2012-05-04T06:15:02.053 回答