16进制字符串转整数（16进制颜色值如#f0f011）

2019-11-08 01:17:51

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using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace BaseServer{ public static class StringHexToInt { public static int StrHexToInt(string str) { char[] chars = str.ToCharArray(); int len = chars.Length; int i=0; int result=0; for (i = 0; i < len;i++ ) { if (!(chars[i] == 'a' || chars[i] == 'A'|| chars[i] == 'b' || chars[i] == 'B' || chars[i] == 'c' || chars[i] == 'C' || chars[i] == 'd' || chars[i] == 'D' || chars[i] == 'e' || chars[i] == 'E' || chars[i] == 'f' || chars[i] == 'F') ) { int P16 = (int) Math.Pow(16,len-1-i ); result += int.Parse(chars[i].ToString()) * P16; } else { if(chars[i] == 'a' || chars[i] == 'A') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 10 * P16; } else if (chars[i] == 'b' || chars[i] == 'B') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 11 * P16; } else if (chars[i] == 'c' || chars[i] == 'C') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 12 * P16; } else if (chars[i] == 'd' || chars[i] == 'D') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 13* P16; } else if (chars[i] == 'e' || chars[i] == 'E') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 14 * P16; } else if (chars[i] == 'f' || chars[i] == 'F') { int P16 = (int)Math.Pow(16, len - 1 - i); result += 15 * P16; } } } return result; } }}

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