小编use*_*391的帖子

如何从字符串中获取前30个字节？

例如：string phone = "My name is ???? blah blah";然后

函数返回“我的名字”（30个字节）感谢您的帮助。

BinaryFormatter bf = new BinaryFormatter();
byte[] bytes;
MemoryStream ms = new MemoryStream();
string orig = "? Hello ?? Thank You";
bf.Serialize(ms, orig);
ms.Seek(0, 0);
bytes = ms.ToArray();
MessageBox.Show("Original bytes Length: " + bytes.Length.ToString());
MessageBox.Show("Original string Length: " + orig.Length.ToString());