Winform Learning Log (27th) ---------- unicode encoding, character conversion, and obtained Chinese character location code

I. unicode encoding and character conversion

Ii. unicode encoding and character conversion code

Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System. text; using System. windows. forms; namespace ASCII {public partial class Frm_Main: Form {public Frm_Main () {InitializeComponent ();} private void btn_ToASCII_Click (object sender, EventArgs e) {if (txt_char.Text! = String. empty) // determines whether the input is null {if (Encoding. getEncoding ("unicode "). // determine whether the input is a letter, number, punctuation, and other GetBytes (new char [] {txt_char.Text [0]}) [1] = 0) // The encoded 1st-bit value is 0 {txt_ASCII.Text = Encoding. getEncoding (// get the character's ASCII code value "unicode "). getBytes (txt_char.Text) [0]. toString (); MessageBox. show (txt_char.Text [0]. toString ();} else {txt_ASCII.Text = string. empty; // output the Empty string MessageBox. show ("enter a letter! "," Prompt! "); // Prompt User information} private void btn_ToChar_Click (object sender, EventArgs e) {if (txt_ASCII2.Text! = String. empty) // determines whether the input is null {int P_int_Num; // defines the integer local variable if (int. tryParse (// convert the input characters to numbers txt_ASCII2.Text, out P_int_Num) {txt_Char2.Text = (char) P_int_Num ). toString (); // convert ASCII code to character} else {MessageBox. show (// If the input does not meet the requirements, the prompt box "enter the correct ASCII code value. "," Error! ") ;}} String P_str_temp =" abc "; string P_str = Encoding. getEncoding ("unicode "). getBytes (new char [] {P_str_temp [0]}) [0]. toString ();}}}

3. Obtain the location code of Chinese Characters

Using System; using System. collections. generic; using System. componentModel; using System. data; using System. drawing; using System. linq; using System. text; using System. windows. forms; namespace ChineseCode {public partial class Frm_Main: Form {public Frm_Main () {InitializeComponent ();} private void btn_Get_Click (object sender, EventArgs e) {if (txt_Chinese.Text! = String. empty) // judge whether the input is null {try {txt_Num.Text = // obtain the Chinese character location code (getCode (txt_Chinese.Text);} catch (IndexOutOfRangeException ex) {MessageBox. show (// use the message dialog box to prompt for exception information ex. message + "enter correct Chinese characters", "error! ");}}} /// <Summary> /// method for obtaining the Chinese character location code /// </summary> /// <param name = "strChinese"> Chinese Character </param> /// <returns> return the Chinese character location code </returns> public string getCode (string Chinese) {// (the 'location code is the one-to-one encoding corresponding to Chinese characters. It is represented by four digits. // The first two are the ID codes from 01 to 94, and the last two are the ID codes from 01 to 94. The first half of a Chinese character is the character with the ASC Ⅱ code being "160 + code", and the second half is the character with the ASC Ⅱ code being "160 + bits. 'Example: the location code of "Liu" is 3385, // It indicates the location code 33, 85, it consists of two characters, ASC Ⅱ code 160 + 33 = 193 and 160 + 85 = 245. Byte [] P_bt_array = Encoding. default. getBytes (Chinese); // get the Byte array of Chinese characters int front = (short) (P_bt_array [0]-'\ 0 '); // convert the first byte array to the short type. Here (short) code [0] is also applicable to int back = (short) (P_bt_array [1]-'\ 0'); // converts the second byte array to return (front-160) of the short type ). toString () + (Return-160 ). toString (); // calculates and returns the location code }}}