C# 字符串进制转换
/// <summary>
/// 进制转换
/// </summary>
/// <param name="input"></param>
/// <param name="fromType">原来的进制格式</param>
/// <param name="toType">要转换成的进制格式</param>
/// <returns></returns>
public string ConvertGenericBinary(string input, byte fromType, byte toType)
{
string output = input;
switch (fromType)
{
case 2:
output = ConvertGenericBinaryFromBinary(input, toType);
break;
case 8:
output = ConvertGenericBinaryFromOctal(input, toType);
break;
case 10:
output = ConvertGenericBinaryFromDecimal(input, toType);
break;
case 16:
output = ConvertGenericBinaryFromHexadecimal(input, toType);
break;
default:
break;
}
return output;
}
/// <summary>
/// 从二进制转换成其他进制
/// </summary>
/// <param name="input"></param>
/// <param name="toType"></param>
/// <returns></returns>
private string ConvertGenericBinaryFromBinary(string input, byte toType)
{
switch (toType)
{
case 8:
//先转换成十进制然后转八进制
input = Convert.ToString(Convert.ToInt32(input, 2), 8);
break;
case 10:
input = Convert.ToInt32(input, 2).ToString();
break;
case 16:
input = Convert.ToString(Convert.ToInt32(input, 2), 16);
break;
default:
break;
}
return input;
}
/// <summary>
/// 从八进制转换成其他进制
/// </summary>
/// <param name="input"></param>
/// <param name="toType"></param>
/// <returns></returns>
private string ConvertGenericBinaryFromOctal(string input, byte toType)
{
switch (toType)
{
case 2:
input = Convert.ToString(Convert.ToInt32(input, 8), 2);
break;
case 10:
input = Convert.ToInt32(input, 8).ToString();
break;
case 16:
input = Convert.ToString(Convert.ToInt32(input, 8), 16);
break;
default:
break;
}
return input;
}
/// <summary>
/// 从十进制转换成其他进制
/// </summary>
/// <param name="input"></param>
/// <param name="toType"></param>
/// <returns></returns>
private string ConvertGenericBinaryFromDecimal(string input, int toType)
{
string output = "";
int intInput = Convert.ToInt32(input);
switch (toType)
{
case 2:
output = Convert.ToString(intInput, 2);
break;
case 8:
output = Convert.ToString(intInput, 8);
break;
case 16:
output = Convert.ToString(intInput, 16);
break;
default:
output = input;
break;
}
return output;
}
/// <summary>
/// 从十六进制转换成其他进制
/// </summary>
/// <param name="input"></param>
/// <param name="toType"></param>
/// <returns></returns>
private string ConvertGenericBinaryFromHexadecimal(string input, int toType)
{
switch (toType)
{
case 2:
input = Convert.ToString(Convert.ToInt32(input, 16), 2);
break;
case 8:
input = Convert.ToString(Convert.ToInt32(input, 16), 8);
break;
case 10:
input = Convert.ToInt32(input, 16).ToString();
break;
default:
break;
}
return input;
}
C#进制转换方法汇总
进制转换汇总
1.十进制数转二进制数(结果：11)
string s1 = Convert.ToString(3, 2);
2.十进制数转二进制数(结果：0011) (左侧补位方法，转八进制，转十六进制……与之类似)
string s2 = Convert.ToString(3, 2).PadLeft(4, '0');
3.十进制数转二进制数(结果：1100) (右侧补位方法，转八进制，转十六进制……与之类似)
string s3 = Convert.ToString(3, 2).PadRight(4, '0');
4.十六进制转二进制数(结果：00001111)
string s4 = Convert.ToString(0xf, 2).PadLeft(8, '0');
string s5 = Convert.ToString(0xF, 2).PadLeft(8, '0'); //不区分大小写，结果一样。
5.十六进制转十进制数
string s6 = Convert.ToString(0xf, 10); //结果：15,string类型
string s7 = Convert.ToString(0xf, 10).PadLeft(4, '0'); //结果：0015,string类型
int s8 = Convert.ToInt32("f", 16); //结果：15，int类型
6.二进制转十进制(结果：15)
int s9 = Convert.ToInt32("1111", 2);
7.十六进制转十进制(结果：48)
int s10 = Convert.ToInt32("30", 16);
8.十进制转十六进制(结果：f)
string s12 = string.Format("{0:x0}", 15);
// 第2种方法：
string s12 = convert.ToString(15,16);
9.二进制转十六进制(结果：f)
string s13 = string.Format("{0:x}", Convert.ToInt32("1111", 2));
10.字符转十进制数（结果：65）
int s14 = Convert.ToInt32('A');
11.将字符串中第1个字符转成十进制数（结果：65）
string s15 = "AB";
int s16 = Convert.ToInt32(Convert.ToChar(s15[0]));
Console.WriteLine(s16);
12.十六进制转浮点数（结果：0.68）
byte[] bt = new byte[4] { 0x7b, 0x14, 0x2e, 0x3f };
float ff = BitConverter.ToSingle(bt, 0);
13,浮点数转十六进制数
float f = 0.68f;
string str1 = BitConverter.ToString(BitConverter.GetBytes(f)).Replace("-", ""); //结果：7B142E3F
string str2 = BitConverter.ToString(BitConverter.GetBytes(f)); //结果：7B-14-2E-3F
14.int 转字符串
int n = 49;
string str1 = n.ToString(); //结果：49
string str2 = n.ToString("x"); //结果：0x31
15.字符串转int
string str = "31";
int i = Convert.ToInt32(str); //结果：31
16.byte 转 int
byte bt = 0x31;
int i = Convert.ToInt32(bt); //结果;49
17.ushort[]转换为float类型
ushort[] val ;
List<byte> result = new List<byte>();
result.AddRange(BitConverter.GetBytes(val[0]));
result.AddRange(BitConverter.GetBytes(val[1]));
float JG= BitConverter.ToSingle(result.ToArray(), 0);
18.float转换为ushort[]类型
float value;
ushort lowOrderValue = BitConverter.ToUInt16(BitConverter.GetBytes(value), 2);
ushort highOrderValue = BitConverter.ToUInt16(BitConverter.GetBytes(value), 0);
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