stringbuilder.cs

这是学习java基础的好的源代码的学习资料

using System;
using System.Text;  //StringBuilder

namespace N1
{
	class App 
	{
		static void Main() 
		{
			StringBuilder MyStringBuilder = new StringBuilder("Hello Abcd!");

			MyStringBuilder.Append("How are you?");
			Console.WriteLine(MyStringBuilder);
			int MyInt = 25;
			MyStringBuilder.Append(MyInt);
			Console.WriteLine(MyStringBuilder);

			MyStringBuilder.AppendFormat("{0:C}",MyInt);
			Console.WriteLine(MyStringBuilder);

			
			Insert_Remove_Replace();
			Matrix();

			Console.Write("Press Enter to close window...");
			Console.Read();
		}

		static void Matrix() 
		{
			Console.WriteLine("\nMatrix Demo");

			// Create a matrix of StringBuilder references
			StringBuilder[,] sba = new StringBuilder[2, 3];

			// Initialize the references in the matrix to point to real StringBuilder objects
			for (int x = 0; x <= sba.GetUpperBound(0); x++) 
			{
				for (int y = 0; y <= sba.GetUpperBound(1); y++) 
				{
					sba[x, y] = new StringBuilder(String.Format("({0}, {1})", x, y));
				}
			}

			// Display the Matrix elements
			for (int x = 0; x <= sba.GetUpperBound(0); x++) 
			{
				for (int y = 0; y <= sba.GetUpperBound(1); y++) 
				{
					Console.Write(sba[x, y] + "      ");
				}
				Console.WriteLine();
			}
			Console.WriteLine();  
		}

		static void Insert_Remove_Replace()
		{
			Console.WriteLine("Insert_Remove_Replace()");
			StringBuilder MyStringBuilder = new StringBuilder("Hello Abcd!");
			MyStringBuilder.Insert(6,'a');
			Console.WriteLine(MyStringBuilder);
			MyStringBuilder.Replace('!','?');
            Console.WriteLine(MyStringBuilder);
			MyStringBuilder.Remove(5,6);
			Console.WriteLine(MyStringBuilder);
		}
	}
}