基于ConcurrentDictionary<string, Tuple<string, string>>，我需要更新 Tuple.item1 字符串以刪除空格。到目前為止我所嘗試的：ConcurrentDictionary<string, Tuple<string, string>> myDictionary = new <string, Tuple<string, string>>RemoveSpacesFromDic(myDictionary);public Boolean ShouldRemoveSpace(string myValue){   return myValue.Contains(" ");}public void RemoveSpacesFromDic(ConcurrentDictionary<string, Tuple<string, string>> sampleDictionary){   List<string> keys = new List<string>(sampleDictionary.Keys);   foreach (string key in keys)   {      if (ShouldRemoveSpace(sampleDictionary[key].Item1))      {         string newValue= sampleDictionary[key].Item1;         //Remove spaces from newValue logic         sampleDictionary[key] = new Tuple<string, string>(newValue, sampleDictionary[key].Item2);      }    }}如果沒有鍵列表邏輯，是否有一種優(yōu)雅的方法可以做到這一點？也許用 LINQ。