字母转换成数字
byte[] array = new byte[1]; //定义一组数组array
array = System.Text.Encoding.ASCII.GetBytes(string); //string转换的字母
int asciicode = (short)(array[0]);
ASCII码 = Convert.ToString(asciicode); //将转换一的ASCII码转换成string型
数字转换成字母
byte[] array = new byte[1];
array[0] = (byte)(Convert.ToInt32(ASCII码)); //ASCII码强制转换二进制
转换后的字母= Convert.ToString(System.Text.Encoding.ASCII.GetString(array));
在编码的过程中很多时候会用到将某些数字的索引转化为字母,比方说Excel的单元格的列数在Excel中就用大写字母来表示,要把数字转换成字母可以使用C#的ASCIIEncoding类里的GetString方法。请参见以下示例:
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private string NunToChar(int number) { if (65 <= number && 90 >= number) { System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding(); byte[] btNumber = new byte[] { (byte)number }; return asciiEncoding.GetString(btNumber); } return "数字不在转换范围内"; }
private string NunberToChar(int number) { if (1 <= number && 36 >= number) { int num = number+64; System.Text.ASCIIEncoding asciiEncoding = new System.Text.ASCIIEncoding(); byte[] btNumber = new byte[] { (byte)num }; return asciiEncoding.GetString(btNumber); } return "数字不在转换范围内"; }
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转自:https://www.cnblogs.com/roucheng/p/csascii.html