C# | Char。GetUnicodeCategory(String，Int32)方法示例
原文:https://www . geeksforgeeks . org/c-sharp-char-getunicodecategorystring-int 32-method-with-examples/
此方法用于将指定字符串中指定位置的字符分类到由其中一个 UnicodeCategory 值标识的组中。
语法:
公共静态系统。UnicodeCategory GetUnicodeCategory(字符串 s，int index)；
参数:
- s :是弦。
- 索引:是 s 中的人物位置。
返回值:该方法返回一个 UnicodeCategory 枚举常量，该常量标识包含位于的中位置索引处的字符的组。
异常:
- 参数空异常:如果 s 为空。
- argumentout of range exception:如果指数小于零或者大于 s 中的最后一个位置。
以下程序说明了字符的使用。GetUnicodeCategory(String，Int32) 方法:
例 1:
// C# program to demonstrate the
// Char.GetUnicodeCategory(String,
// Int32) Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// calling check() Method
check("1234", 3);
check("Tsunami", 0);
check("psyc0lo", 2);
}
catch (ArgumentNullException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
catch (ArgumentOutOfRangeException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
// Defining check() method
public static void check(string s, int i)
{
// checking condition
// using GetNumericValue() Method
UnicodeCategory val = Char.GetUnicodeCategory(s, i);
// Display the values
Console.WriteLine("the letter present at "+
"index {0} is {1} ", i, val);
}
}
Output:
the letter present at index 3 is DecimalDigitNumber
the letter present at index 0 is UppercaseLetter
the letter present at index 2 is LowercaseLetter
示例 2: 适用于参数异常
// C# program to demonstrate the
// Char.GetUnicodeCategory(String,
// Int32) Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// calling check() Method
check("1234", 3);
check("Tsunami", 0);
check("psyc0lo", 2);
Console.WriteLine("");
Console.WriteLine("s is null");
check(null, 2);
}
catch (ArgumentNullException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
catch (ArgumentOutOfRangeException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
// Defining check() method
public static void check(string s, int i)
{
// checking condition
// using GetNumericValue() Method
UnicodeCategory val = Char.GetUnicodeCategory(s, i);
// Display the values
Console.WriteLine("the letter present at "+
"index {0} is {1} ", i, val);
}
}
Output:
the letter present at index 3 is DecimalDigitNumber
the letter present at index 0 is UppercaseLetter
the letter present at index 2 is LowercaseLetter
s is null
Exception Thrown: System.ArgumentNullException
例 3: 为argumentout of range exception
// C# program to demonstrate the
// Char.GetUnicodeCategory(String,
// Int32) Method
using System;
using System.Globalization;
class GFG {
// Main Method
public static void Main()
{
try {
// calling check() Method
check("1234", 3);
check("Tsunami", 0);
check("psyc0lo", 2);
Console.WriteLine("");
Console.WriteLine("index is less than zero");
check("null", -1);
}
catch (ArgumentNullException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
catch (ArgumentOutOfRangeException e) {
Console.Write("Exception Thrown: ");
Console.Write("{0}", e.GetType(), e.Message);
}
}
// Defining check() method
public static void check(string s, int i)
{
// checking condition
// using GetNumericValue() Method
UnicodeCategory val = Char.GetUnicodeCategory(s, i);
// Display the values
Console.WriteLine("the letter present at "+
"index {0} is {1} ", i, val);
}
}
Output:
the letter present at index 3 is DecimalDigitNumber
the letter present at index 0 is UppercaseLetter
the letter present at index 2 is LowercaseLetter
index is less than zero
Exception Thrown: System.ArgumentOutOfRangeException
参考:
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