我怎樣才能消除「使用未分配的本地變量」的錯誤

Question

我是編程C＃和我有問題得到錯誤，使用未分配的變量，我已經宣佈變量。請幫忙。我甚至做了在Visual Studio中建立的解決方案2010年

public decimal FinishCost 
    { 
     get { 
      decimal fnCost; 

      if (exteriorFinishChosen == ExteriorFinish.None) 
      { 
       fnCost = Finish.None; 
      } 

      else if (exteriorFinishChosen == ExteriorFinish.Standard) 
      { 
       fnCost = Finish.Standard; 
      } 
      else if (exteriorFinishChosen == ExteriorFinish.Pearlized) 
      { 
       fnCost = Finish.Pearlized; 
      } 
      else if (exteriorFinishChosen == ExteriorFinish.Custom) 
      { 
       fnCost = Finish.Custom; 
      } 
      return fnCost; 
     } 
    } 

Answer 1

你需要給fnCost初始值，即使這個值是NULL或0：

public decimal FinishCost 
{ 
    get 
    { 
     decimal fnCost = 0; 

     if (exteriorFinishChosen == ExteriorFinish.None) 
     { 
      fnCost = Finish.None; 
     } 

     else if (exteriorFinishChosen == ExteriorFinish.Standard) 
     { 
      fnCost = Finish.Standard; 
     } 
     else if (exteriorFinishChosen == ExteriorFinish.Pearlized) 
     { 
      fnCost = Finish.Pearlized; 
     } 
     else if (exteriorFinishChosen == ExteriorFinish.Custom) 
     { 
      fnCost = Finish.Custom; 
     } 
     return fnCost; 
    } 
}