黑马程序员_使用C#轻松编写.Net组件

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1.新建一个类StringComponent.cs

using System;namespace ComponentCS{    public class StringComponent    {        public StringComponent()        {            StringSet = new String[]            {             "C# String0",             "C# String1",             "C# String2",             "C# String3",            };        }        private string[] StringSet;        public event EventHandler Modified;        public int StringLength        {            get { return StringSet.Length; }        }        public void Modify(int index, string value)        {            if (index < 0 || index >= StringSet.Length)            {                throw new IndexOutOfRangeException();            }                StringSet[index] = value;                OnModify();        }        private void OnModify()         {            EventArgs e = new EventArgs();            if(Modified!=null)            {                Modified(this, e);            }        }        public string GetString(int index)         {            if (index < 0 || index >= StringSet.Length)            {                throw new IndexOutOfRangeException();            }            return StringSet[index];        }    }}

3.使用csc.exe(C:\Windows\Microsoft.NET\Framework\)将上面的cs文件编译成dll

4.测试

using ComponentCS;namespace WebApptest{    public partial class _Default : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {            StringComponent sc = new StringComponent();            Response.Write(sc.StringLength);        }    }}