However, after some testing I have found that Convert.ToByte is significantly faster than byte.Parse so I have modified my previous post to use this method. The vast majority of cases will use the format FFFF.FF or 0xFFFF.FF. This would be useful if and only if you are passing in a string of the format FF-FF-.-FF (imagine that ba_as_string is an argument rather than generated inside the method and ba2 is returned from the method). This generates a sequence of bytes, converts them to a string, splits them into a string and then individually converts them. This does not do what it says on the tin, i.e. The key function provided by the framework to convert a hexadecimal string to a single byte is this: Notice the ‘-‘ characters are now missing. He圎ncoding.ToString(byte) returns the newly converted byte array back into string form. This includes dashes, whitespace, and letters after ‘F’. He圎ncoding.GetBytes(string hexString, out int discarded) returns the byte array converted from the hexString, and the second parameter returns the number of non-hexadecimal characters that were ignored in the string. GetByteCount(string hexString) returns the number of bytes that will be generated from the hexString. TxtHex2.Text = He圎ncoding.ToString(byteArray) Temp += byteArray.ToString( " D3") + " " TxtLength.Text = () īyte byteArray = He圎ncoding.GetBytes(hexString, out discarded) TxtByteCount.Text = (( int)He圎ncoding.GetByteCount(hexString)).ToString()
ONLINE EMAIL PARSER BYTES CODE
Here’s a sample of how it is used, when the Convert button is clicked like on the screenshot:Ĭopy Code private void button1_Click( object sender, System.EventArgs e) He圎ncoding is the name of the class I created with static functions for hexadecimal string conversion. string “01FFA0” is equivalent to byte Using the code A hexadecimal character has a value of (A-F, 0-9).Į.g. In a hexadecimal string, one byte is represented two hexadecimal characters. It also contains functions which lets you check the formatting of the string before conversion, and how many bytes a given string will produce. The He圎ncoding class provided here, contains functions which allow for the conversion of a string in hexadecimal format into a byte array, and back. Such a function is useful when you need to backup data from your application on paper, such as an encryption key, and later, convert it back into data after the user types it in. NET framework provides methods to convert a byte array into a Hexadecimal string ( byte.ToString(“X”) ), it is not so easy to convert a hexadecimal string back into a byte array.
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