正確使用get_range製作圖表

Question

我正在使用以下代碼嘗試進行收費並引發com異常。我正在試圖製作一張圖表。有沒有什麼明顯的我的代碼做錯了？錯誤發生在get_range行。

 static void makechart(int counter, int startcount, Worksheet sourcesheet) 
    { 
     Range chartrange; 
     string rangestr = "G" + startcount.ToString() + ":G" + counter.ToString() + ",I" + startcount.ToString() + ":I" + counter.ToString(); 
     ChartObjects xlcharts =  (ChartObjects)sourcesheet.ChartObjects(Type.Missing); 
     ChartObject myChart = (ChartObject)xlcharts.Add(10, 80, 300, 250); 
     Chart chartPage = myChart.Chart; 
     chartrange = objsheet.get_Range(rangestr,Type.Missing); 
     //chartrange = sourcesheet.get_Range("G1", "B" + counter + 1); 

     chartPage.SetSourceData(chartrange, Type.Missing); 
     chartPage.ChartType = XlChartType.xlBarClustered; 


    } 

Answer 1

這應該工作：

替換：

string rangestr = "G" + startcount.ToString() + ":G" + counter.ToString() + ",I" + startcount.ToString() + ":I" + counter.ToString(); 

有：

string range1 = "G" + startcount.ToString() + ":G" + counter.ToString(); 
string range2 = "I" + startcount.ToString() + ":I" + counter.ToString(); 

和

chartrange = objsheet.get_Range(rangestr,Type.Missing); 

附：

chartrange = objsheet.get_Range(range1,range2);