c# - Convert.ToByte Could not find any recognizable digits -

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this question has answer here:

i need somehow convert "xxx" byte got exception

an unhandled exception of type 'system.formatexception' occurred in mscorlib.dll

additional information: not find recognizable digits.

is possible "xxx" value convert byte?

 byte tr  = (byte)(convert.tobyte("xxx", 16) << 4);

it not possible convert "xxx" byte. not representation of byte.


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