c#中int 转string 16进制和16转double的方法

0x发端的16进制没有负数和少量#region change hex to doubleprivate double hexconvertodouble(string hexstring){if (hexstring == ""){return 0;}string data;if (hexstring.startswith("0x")){data = hexstring.substring(2);}else{data = hexstring;}char[] eachdata = data.tochararray();double result = 0;for (int i = 0; i < eachdata.length; i++){char charvalue = eachdata[i];//eachdata[m];double x = 16;//即使是八进制则写成8就不妨double y = system.convert.todouble(eachdata.length - i - 1);switch (charvalue){case '0':break;case '1':result += 1 * math.pow(x,y);break;case '2':result += 2 * math.pow(x,y);break;case '3':result += 3 * math.pow(x,y);break;case '4':result += 4 * math.pow(x,y);break;case '5':result += 5 * math.pow(x,y);break;case '6':result += 6 * math.pow(x,y);break;case '7':result += 7 * math.pow(x,y);break;case '8':result += 8 * math.pow(x,y);break;case '9':result += 9 * math.pow(x,y);break;case 'a':result += 10 * math.pow(x,y);break;case 'b':result += 11 * math.pow(x,y);break;case 'c':result += 12 * math.pow(x,y);break;case 'd':result += 13 * math.pow(x,y);break;case 'e':result += 14 * math.pow(x,y);break;case 'f':result += 15 * math.pow(x,y);break;case 'a':result += 10 * math.pow(x,y);break;case 'b':result += 11 * math.pow(x,y);break;case 'c':result += 12 * math.pow(x,y);break;case 'd':result += 13 * math.pow(x,y);break;case 'e':result += 14 * math.pow(x,y);break;case 'f':result += 15 * math.pow(x,y);break;default :break;}}return result;}#region convert the int32 to hex(string) //这个本领通用性不好，只能是int的转string的16进制private string specinttostring(int source)//被重要本领挪用的一个扶助本领{if(source <10){return source.tostring();}else{switch(source){case 10:return "a";case 11:return "b";case 12:return "c";case 13:return "d";case 14:return "e";case 15:return "f";default:return "";}}}private string inttohex(int source)//重要本领{if(source <10){return "0x" + source.tostring();}else if (source <=15){return "0x" + specinttostring(source);}else{int raisenum = 16;int addnum = 16;int positionnum = 1;while((source - addnum) >= 0){positionnum++;addnum = addnum * raisenum;}int[] valuepositionnum = new int[positionnum];for(int i = 0;i {valuepositionnum[i] = 0;}int[] valueaddnum = new int[positionnum];for(int i = 0;i {valueaddnum[i] = convert.toint32( math.pow(raisenum,i));}int[] decreasesource = new int[positionnum];decreasesource[positionnum -1] = source;for(int i = positionnum -1;i>=0;i--){while((decreasesource[i] - valueaddnum[i] ) >=0){if(i != 0)decreasesource[i -1] = decreasesource[i] - valueaddnum[i] ;valuepositionnum[i]++;valueaddnum[i]= valueaddnum[i] +convert.toint32( math.pow(raisenum,i));}}string[] stringvaluepositionnum = new string[positionnum];for(int i = 0;i {stringvaluepositionnum[i] = specinttostring(valuepositionnum[i]);}string result = "0x";for(int i = positionnum -1;i>=0;i--){result = result + stringvaluepositionnum[i];}return result;// string[] hexlist = new string[positionnum + 1];// hexlist[positionnum] = specinttostring(positionnum); }}#endregion#endregion