Filter begin and end characters from a string

I receive the following string every time I open the serial port, this string is for checking which bios version and which firmware version the connected device is running. String: ``` v03400216000000001FC5H240108206B-RAMBOX=[03] ``` Now the only important charachters for checking the Bios version and Firmware version are the following: ``` 03400216 ``` Note: `bytearray` is a `byte[]` converted to a `string` and is filled with: ``` v03400216000000001FC5H240108206B-RAMBOX=[03] ``` I tried achieving this using the following code: ``` string versiontext = bytearray.Trim(); bytearray = versiontext.Remove(0, 2); versiontext = bytearray.Remove(9, bytearray.Length); bytearray = versiontext; ``` But that didn't work out and resulted in the following exception: ``` Index and count must refer to a location within the string. ``` Should I use a `Regex`, Instead of the `.Remove`? EDIT: @lazyberezovsky Helped me out, I just forgot about the `.Substring()`. I achieved the `string result` with the following code: ``` if (bytearray.Contains("RAMBOX")) { string Versionstring = bytearray.Substring(1, 8); bytearray = Versionstring; } ```