如何使用C＃Interop返回整數數組？

Question

我試圖返回一個整數數組，並不能得到它的工作...

下面ID我的代碼，對return array

以下錯誤無法隱式轉換類型「詮釋[]」到‘廉政’

public int getIndexes(int num) 
    { 
     var wb = (Excel.Workbook)Globals.ThisAddIn.Application.ActiveWorkbook; 
     var wsEvars = wb.Sheets["Evars"]; 


     Excel.Worksheet sheet = null; 
     if (num == 0) sheet = wsEvars; 

     if (num != 2) 
     { 
      var rng = (Excel.Range)sheet.Range[sheet.Cells[3, 2], sheet.Cells[3, 27]]; 
      var wsValues = rng.Cells.Value; 
      int scopeIndex = 0; 
      int methodIndex = 0; 
      int delimiterIndex = 0; 
      int formatIndex = 0; 
      int count = 0; 

      foreach (var head in wsValues) 
      { 
       if (head == "*Scope") 
        scopeIndex = count + 1; 
       if (head == "Set Method") 
        methodIndex = count + 1; 
       if (head == "Delimiter") 
        delimiterIndex = count + 1; 
       if (head == "Format") 
        formatIndex = count + 1; 
      } 
      int[] array = new int[]{scopeIndex, methodIndex, delimiterIndex, formatIndex}; 
      return array; 
     } 
    } 

Answer 1

的問題是，你的方法返回一個int，而不是int[]只要你想。另外，你正在做if區塊內的回報，並且不能確保return將會被擊中，因爲只有當條件成立時纔會發生。如果條件錯誤怎麼辦？在這種情況下你沒有返回任何東西。從塊中獲取return：

public int[] getIndexes(int num) 
{ 
    int[] array = null; 
    var wb = (Excel.Workbook)Globals.ThisAddIn.Application.ActiveWorkbook; 
    var wsEvars = wb.Sheets["Evars"]; 


    Excel.Worksheet sheet = null; 
    if (num == 0) sheet = wsEvars; 

    if (num != 2) 
    { 
     var rng = (Excel.Range)sheet.Range[sheet.Cells[3, 2], sheet.Cells[3, 27]]; 
     var wsValues = rng.Cells.Value; 
     int scopeIndex = 0; 
     int methodIndex = 0; 
     int delimiterIndex = 0; 
     int formatIndex = 0; 
     int count = 0; 

     foreach (var head in wsValues) 
     { 
      if (head == "*Scope") 
       scopeIndex = count + 1; 
      if (head == "Set Method") 
       methodIndex = count + 1; 
      if (head == "Delimiter") 
       delimiterIndex = count + 1; 
      if (head == "Format") 
       formatIndex = count + 1; 
     } 
     array = new int[]{scopeIndex, methodIndex, delimiterIndex, formatIndex}; 
    } 
    return array; 
}