通过Dictionary key值获取对应value

/// <summary>
/// 通过Dictionary key值获取对应value
/// </summary>
public string GetValueByKey(Dictionary<string, string> dic,string key)
{
       string result = "";
       foreach (KeyValuePair<string, string> kvp in dic)
       {
           if (kvp.Key.Equals(key))
           {
                result = kvp.Value;
                break;
           }
       }
       eturn result;
 }