using System; using System.Collections.Generic; using System.Linq; using System.Text;

namespace AnyConvertx2x { /// <summary> /// 数字进制转换类 /// </summary> public class AnyConvert { private static char[] rDigits = { ‘0‘, ‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘, ‘7‘, ‘8‘, ‘9‘, ‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘, ‘R‘, ‘S‘, ‘T‘, ‘U‘,‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘ }; /// <summary> /// 将指定基数的数字的 System.String 表示形式转换为等效的 64 位有符号整数。 /// </summary> /// <param name="value">包含数字的 System.String。</param> /// <param name="fromBase">value 中数字的基数，它必须是[2,36]</param> /// <returns>等效于 value 中的数字的 64 位有符号整数。- 或 - 如果 value 为 null，则为零。</returns> private long x2h(string value, int fromBase) { value = http://www.mamicode.com/value.Trim(); if (string.IsNullOrEmpty(value)) { return 0L; } string sDigits = new string(rDigits, 0, fromBase); long result = 0; //value = reverse(value).ToUpper(); 1 value = value.ToUpper();// 2 for (int i = 0; i < value.Length; i++) { if (!sDigits.Contains(value[i].ToString())) { throw new ArgumentException(string.Format("The argument \"{0}\" is not in {1} system.", value[i], fromBase)); } else { try { //result += (long)Math.Pow(fromBase, i) * getcharindex(rDigits, value[i]); 1 result += (long)Math.Pow(fromBase, i) * getcharindex(rDigits, value[value.Length - i - 1]);// 2 } catch { throw new OverflowException("运算溢出."); } } } return result; } private int getcharindex(char[] arr, char value) { for (int i = 0; i < arr.Length; i++) { if (arr[i] == value) { return i; } } return 0; } //long转化为toBase进制 private string h2x(long value, int toBase) { int digitIndex = 0; long longPositive = Math.Abs(value); int radix = toBase; char[] outDigits = new char[63]; for (digitIndex = 0; digitIndex <= 64; digitIndex++) { if (longPositive == 0) { break; } outDigits[outDigits.Length - digitIndex - 1] = rDigits[longPositive % radix]; longPositive /= radix; } return new string(outDigits, outDigits.Length - digitIndex, digitIndex); } /// <summary> /// 任意进制转换,将fromBase进制表示的value转换为toBase进制 /// </summary> /// <param name="value"></param> /// <param name="fromBase">原来进制（2-36进制）</param> /// <param name="toBase">转换后的进制（2-36进制）</param> /// <returns></returns> public string X2X(string value, int fromBase, int toBase) { if (string.IsNullOrEmpty(value.Trim())) { return string.Empty; } if (fromBase < 2 || fromBase > 36) { throw new ArgumentException(String.Format("The fromBase radix \"{0}\" is not in the range 2..36.", fromBase)); } if (toBase < 2 || toBase > 36) { throw new ArgumentException(String.Format("The toBase radix \"{0}\" is not in the range 2..36.", toBase)); } long m = x2h(value, fromBase); string r = h2x(m, toBase); return r; } } }

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using AnyConvertx2x; namespace AnyRadixConvert { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { AnyConvert convert = new AnyConvert(); textBox2 .Text = convert.X2X(textBox1 .Text , 36, 10);//36 To 10 } private void button2_Click(object sender, EventArgs e) { AnyConvert convert = new AnyConvert(); textBox2.Text = convert.X2X(textBox1.Text, 10, 36);//10 To 36 } } }