Learning to use the system. char structure of ASP. NET

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/* Field */maxvalue // 65535 minvalue // 0/* Static Method */Char. convertfromutf32 () // convert the Unicode value to the string char. converttoutf32 () // convert to the Unicode value char. equals () // = char. getnumericvalue () // numeric character to the corresponding value, return type is doublechar. getunicodecategory () // get the character class char. iscontrol ()//? Control Character Char. isdigit ()//? Decimal number (0 .. 9) Char. ishighsurrogate ()//? High proxy code bit (U + d800... U + dbff) Char. isletter ()//? Char. isletterordigit ()//? Letter or decimal number? Char. islower ()//? Lowercase letters (A. Z, etc.) Char. islowsurrogate ()//? Low agent code bit (U + dc00... U + dfff) Char. isnumber ()//? Number (0 .. 9, etc.) Char. ispunctuation ()//? Punctuation? Char. isseparator ()//? Delimiter (space, etc.) Char. issurrogate ()//? Proxy code bit Char. issurrow.pair () // determine whether two char objects form a proxy for Char. issymbol ()//? Symbol ($ + = ^ '|, etc.) Char. isupper ()//? Uppercase letters (A. Z, etc.) Char. iswhitespace ()//? Blank char. parse () // convert the string of a single character to charchar. tolower () // converts it to lowercase char. tolowerinvariant () // converts it to lowercase and uses the regional rule char. tostring () // char. toupper () // convert to uppercase char. toupperinvariant () // converts to uppercase and uses the regional rule char. tryparse () // try to convert the string of a single character to Char/* object Method */compareto () // comparison, and return an integer representing the distance

Getnumericvalue ():

 
Protected void button#click (Object sender, eventargs e) {double F1 = char. getnumericvalue ('9'); // 9 double F2 = char. getnumericvalue ('A'); //-1 double F3 = char. getnumericvalue ('wan'); //-1 double F4 = char. getnumericvalue ("a1b2", 3); // 2 textbox1.text = string. concat (F1, "\ n", F2, "\ n", F3, "\ n", F4 );}
 

Convertfromutf32 (), converttoutf32 ():

Protected void button#click (Object sender, eventargs e) {string S1 = char. convertfromutf32 (65); // a string S2 = char. convertfromutf32 (0x4e07); // tens of thousands of int n1 = char. converttoutf32 ("ABC", 1); // 66 int n2 = char. converttoutf32 ("19975", 0); // textbox1.text = string. concat (S1, "\ n", S2, "\ n", N1, "\ n", N2 );}
 

Getunicodecategory ():

Protected void button1_click (Object sender, eventargs e) {char C; string STR = ""; for (INT I = 20; I control21control22control23control24control25control26control27control28control29control30control31control32 spaceseparator33! Pricing "pricing # pricing $ currencysymbol37 % otherpunctuation38 & otherpunctuation39 'otherpunctuation40 (openpunctuation41) closepunctuation42 * otherpunctuation43 + mathsymbol44, OtherPunctuation45-DashPunctuation46.OtherPunctuation47/pricing Decimaldigitnumber557decimaldigitnumber568decimaldigitnumber579decimaldigitnumber58: otherpunctuation59; otherpunctuation60mathsymbol63? Otherpunctuation64 @ Login Login [openpunctuation92 \ otherpunctuation93] closepunctuation94 ^ modifiersymbol95_connectorpunctuation96 'login successful Optional {openpunctuation124 | mathsymbol125} closepunctuation126 ~ Please refer to the following link for more information: [othersymbol167] [othersymbol168] (delete) [delete] [delete] [delete] [delete] [delete] [delete] [delete] [delete] [delete] [delete] [delete] (delete) [delete] · Please refer to our website for accessing othernumber186 ° networks» please refer to othernumber189 when othernumber190 when othernumber191 has been named à á â uppercaseletter195 ä ä~~~~~~~çuppereletter200? when uppercaseletter204 was uppercaseletter205 íî uppercaseletter207 ï ~~~~~~~~~~~~~~× mathsymbol216 ø ~~~~~~~~{uppercaseletter222 then uppercaseletter223 lowercaseletter224 à rálowercaseletter226 â lowercaseletter227 ä älowercaseletter229 ç çlowercaseletterè é ë ****í lowercaselet ter238 *********** ó lowercaseletter244 lowercaseletter245 ö ölowercaseletter247 mathsymbol248 ø lowercaseletter249 lower lowercaseletter250 úlowercaseletterterlowercaseletter252 U lower than lowercaseletterter */