csharp 文字置换と入力制限

Posted 2021-05-12

using System;

class Test
{
	static void Main()
	{
		string s = "あ い　うえお";
		char[] removeChars = new char[] { ' ', '　' };
		
		// test
		Console.WriteLine(s); // あ い　うえお
		
		if (s.Contains(" ") || s.Contains("　"))
		{
		  // test
			int counter = 1;
			
			foreach (char c in removeChars)
			{
				s = s.Replace(c.ToString(), "");
				
				// test
				Console.WriteLine(counter + "："  + s);
				
				counter++;
			}
		}
		
		// test
		Console.WriteLine(s); // あいうえお
	}
}

using System;
using System.Text;

class Test
{
	static void Main()
	{
		string s = "あ い　うえお";
		string[] removeStr = new string[] { " ", "　" };
		
		StringBuilder sb = new StringBuilder(s);
		
		foreach (string rs in removeStr)
		{
			sb.Replace(rs, "");
		}
		
		// test
		Console.WriteLine(s);  // あ い　うえお
		Console.WriteLine(sb); // あいうえお
	}
}