C# 获得%ProgramData% 路径

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法一：

string str = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);

法二：

private bool ProgramDataWriteFile(string contentToWrite)        {            try            {                string strProgramDataPath = "%PROGRAMDATA%";                string directoryPath = Environment.ExpandEnvironmentVariables(strProgramDataPath) + "\\MyApp\\";                string path = Environment.ExpandEnvironmentVariables(strProgramDataPath)+"\\MyApp\\ConnectionInfo.txt";                if (Directory.Exists(directoryPath))                {                    System.IO.StreamWriter file = new System.IO.StreamWriter(path);                    file.Write(contentToWrite);                    file.Close();                }                else                {                    Directory.CreateDirectory(directoryPath);                    System.IO.StreamWriter file = new System.IO.StreamWriter(path);                    file.Write(contentToWrite);                    file.Close();                }                return true;            }            catch (Exception e)            {            }            return false;        }

如果C:\ProgramData 上述都能获得如果我的路径是 D:\ProgramData 能不能获取？？？

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