class1.cs

C#2005 实例源代码

using System;
using System.Text;

namespace Example_StringBuilder
{
	/// <summary>
	/// MainTest 的摘要说明。
	/// </summary>
	class MainTest
	{
		public void test()
		{
			//声明StringBuilder对象
			//注意：不要遗漏文件开始的using System.Text;
			StringBuilder myStringBuilder=new StringBuilder("Hello");

			//容量设置
			//使用构造函数
			StringBuilder sb2=new StringBuilder("Hello",100);
			//使用Capacity属性
			StringBuilder sb3=new StringBuilder("Hello");
			sb3.Capacity=100;

			//追加
			//Append
			StringBuilder sb4=new StringBuilder("Hello");
			sb4.Append(" World!");
			Console.WriteLine(sb4);		//"Hello World!"

			//AppendFormat
			StringBuilder sb5=new StringBuilder("Today is ");
			sb5.AppendFormat("{0:yyyy-MM-dd}",System.DateTime.Now);
			Console.WriteLine(sb5);		//形如："Heeeello"

			//插入
			//Insert
			StringBuilder sb6=new StringBuilder("Hello");
			sb6.Insert(2,"eee");
			Console.WriteLine(sb6);		//"Heeello"

			//删除
			//Remove
			StringBuilder sb7=new StringBuilder("Heeello");
			sb7.Remove(2,3);			//在”He”后面删除3个字符
			Console.WriteLine(sb7);		//"Hello!"

			//替换
			//Replace
			StringBuilder sb8=new StringBuilder("Hello");
			sb8=sb8.Replace("ll","r");			
			Console.WriteLine(sb8);		//Hero


		}

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main(string[] args)
		{
			//
			// TODO: 在此处添加代码以启动应用程序
			//
			MainTest t=new MainTest();
			t.test();
		}
	}
}