C # byte array to string, get definition and BASE64 encoding

The BASE64 encoding requires the conversion of 3 8-bit bytes (3*8=24) into 4 6-bit bytes (4*6=24), followed by 6 two in front of 0 bits, forming a 8-bit byte form. If the remaining characters are less than 3 bytes, then 0 is populated with the output character using ' = ', so there may be 1 or 2 ' = ' At the end of the encoded text output. To ensure the output of the encoded bit-readable characters, BASE64 developed an encoding table for uniform conversion. The size of the encoded table is 2^6=64, which is also the origin of the Base64 name.

BASE64 Encoding Table:

Code Value	character		Code Value	character		Code Value	character		Code Value	character
0	A		16	Q		32	G		48	W
1	B		17	R		33	H		49	X
2	C		18	S		34	I		50	Y
3	D		19	T		35	J		51	Z
4	E		20	U		36	K		52	0
5	F		21st	V		37	L		53	1
6	G		22	W		38	M		54	2
7	H		23	X		39	N		55	3
8	I		24	Y		40	O		56	4
9	J		25	Z		41	P		57	5
10	K		26	A		42	Q		58	6
11	L		27	B		43	R		59	7
12	M		28	C		44	S		60	8
13	N		29	D		45	T		61	9
14	O		30	E		46	U		62	+
15	P		31	F		47	V		63	/

     Public Partial classForm1:form { PublicForm1 () {InitializeComponent (); }        Private voidForm1_Load (Objectsender, EventArgs e) {TextBox1.Text="X2009 China"; }        Private voidtextBox1_TextChanged (Objectsender, EventArgs e) {            byte[] bs =Encoding.UTF8.GetBytes (TextBox1.Text); TextBox2.Text=bitconverter.tostring (BS); stringresult ="{"; foreach(byteBinchBS) result+="0x"+ b.tostring ("X2") +","; Result= result. TrimEnd (',') +"}"; TextBox3.Text=result; Textbox4.text=convert.tobase64string (BS); }    }

C # byte array to string, get definition and BASE64 encoding