计算WPF中excel列的动态单元格/行的总和

Question

请问，有没有什么办法可以合计（总结）给定列的单元格（行）的内容，其中可能的行数单元格）是动态的，也就是说，行数不固定，在Excel工作表中？我一直在尝试没有任何有意义的结果，我尝试使用偏移量，但继续从HRESULT等等一些COM_Exception等等......

下面是试图用于实现我的目的的演示代码的一部分。

请高度赞赏任何建议（与代码片段）。

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; 



    } 

Answer 1

不要紧，我已经能够自己做。而对于任何人都可能会stucked有这样那样的问题，好像我是，在这里你去：

  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(); 

//了“& &”是十分必要的，以避免增加单元格的值（这可能是一个字符串 - 就像一个列的标题）加倍，以避免出现错误。

Answer 2

我不认为xlWorkSheet.Cells.Offset[i, 0].Value2有效。而不是使用Offset，只需坚持Cells(i, 1).Value2。让我知道这是否适合你。