在C#编程中字母与ASCII码的转换源码：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace WindowsFormsApplication1{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            Encoding enc = Encoding.GetEncoding("unicode");            if(textBox1.Text!=string.Empty)            {                if(enc.GetBytes(new char[] {textBox1.Text[0]})[1]==0)                {                    textBox2.Text = enc.GetBytes(textBox1.Text)[0].ToString();                }                else                {                    textBox2.Text = string.Empty;                    MessageBox.Show("请输入字母","信息提示");                }            }        }        private void button2_Click(object sender, EventArgs e)        {            if(textBox3.Text!=string.Empty)            {                int a;                if(int.TryParse(textBox3.Text,out a))                {                    textBox4.Text = ((char)a).ToString();                }                else                {                    MessageBox.Show("请重新输入ASCII码","信息提示");                }            }        }    }}

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