Base64编码文本的互相转换
///
/// 用于文本和Base64编码文本的互相转换 和 Byte[]和Base64编码文本的互相转换
///
class Base64Change
{
///
/// 将普通文本转换成Base64编码的文本
///
///
普通文本
///
public string StringToBase64String(String value)
{
byte[] binBuffer =(new UnicodeEncoding()).GetBytes(value);
int base64ArraySize = (int)Math.Ceiling(binBuffer.Length / 3d) * 4;
char[] charBuffer = new char[base64ArraySize];
Convert.ToBase64CharArray(binBuffer, 0, binBuffer.Length, charBuffer, 0);
string s = new string(charBuffer);
return s;
}
///
/// 将Base64编码的文本转换成普通文本
///
///
Base64编码的文本
///
public string Base64StringToString(string base64)
{
char[] charBuffer = base64.ToCharArray();
byte[] bytes = Convert.FromBase64CharArray(charBuffer, 0, charBuffer.Length);
return (new UnicodeEncoding()).GetString(bytes);
}
///
/// 将Byte[]转换成Base64编码文本
///
///
Byte[]
///
public string toBase64(byte[] binBuffer)
{
int base64ArraySize = (int)Math.Ceiling(binBuffer.Length / 3d) * 4;
char[] charBuffer = new char[base64ArraySize];
Convert.ToBase64CharArray(binBuffer, 0, binBuffer.Length, charBuffer, 0);
string s = new string(charBuffer);
return s;
}
///
/// 将Base64编码文本转换成Byte[]
///
///
Base64编码文本
///
public Byte[] Base64ToBytes(string base64)
{
char[] charBuffer = base64.ToCharArray();
byte[] bytes = Convert.FromBase64CharArray(charBuffer, 0, charBuffer.Length);
return bytes;
}
}
应用:
文本转换
Base64Change bc = new Base64Change();
string s = "枯藤昏鸦";
string bs = bc.StringToBase64String(s);//bs为转换成的base64编码文本
s = bc.Base64StringToString(bs);//s为还原后的文本"枯藤昏鸦" Byte[]转换
Base64Change bc=new Base64Change();
FileStream fs = new FileStream("d:\\a.bmp", FileMode.Open, FileAccess.ReadWrite);
byte[] bt=new byte[fs.Length];
fs.Read(bt, 0, (int)fs.Length);
fs.Close();
string s = bc.toBase64(bt);//s为转换成的base64编码文本
byte[] b=bc.Base64ToBytes(s);//b为还原后的Byte[]
FileStream f = new FileStream("d:\\b.bmp", FileMode.Create, FileAccess.Write);
f.Write(b, 0, b.Length);
f.Close();
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