C#文件文件获取- 问大家个问题 怎样获取本地磁盘里面的所有文件夹下的所有文件??

System.IO.DriveInfo[] d=System.IO.DriveInfo.GetDrives(); string[] dNames = new string[d.Length];
int x=0;
foreach (System.IO.DriveInfo dirInfo in d)
{
dNames.SetValue(dirInfo.Names,x); x++;
} foreach (String dName in dNames)
{
System.IO.DirectoryInfo di = new System.IO.DirectoryInfo(dName);

di.GetFiles("*.txt",System.IO.SearchOption.AllDirectories);
}