I use the example from 0A0D and changed 'FileMode. Create' to 'FileMode. Parse hex. Substring i, 2 , NumberStyles. Prashant Pimpale 9, 7 7 gold badges 35 35 silver badges 73 73 bronze badges. Thx, this also works fine. You convert the hex string to a byte array.
Khepri Khepri 9, 5 5 gold badges 42 42 silver badges 60 60 bronze badges. If you're referencing an existing Stack Overflow answer as the answer to this question, then it's a pretty safe bet that this is a duplicate question and should be flagged as such.
In this case it only answered part of his question, so I felt it didn't need to be marked as a dupe. He'd only get halfway there with that knowledge. Write b1, 0, 6 ; f1. Open, FileAccess. Read ; f1. Read b2, 0, 6 ; f1. Write b2, 0, 6 ; f1. Read b3, 0, 6 ; f1. Write b4, 0, 6 ; f1. Sign up or log in Sign up using Google. Sign up using Facebook. Not only does that seek to the end for you, it also creates the file if it doesn't exist yet in your code that'll throw an exception, which will crash your program because you're not catching it.
Append myImpPoints ; While string builders are often more efficient than string concatenation, in this case you're only concatenating two strings this header and the result of that string.
Join call , so a string builder won't help here - it might even be less efficient. Note that string. Join uses a string builder internally, and with floats it certainly is useful there.
Again, no need for a local variable myImpPoints - just pass it into Append directly. Append points ; There's no need for that Select call - one of the overloads of string. On the other hand, this only gives you 7 digits of precision. If that's a problem, then you should keep the Select part, but be sure to specify "R" round-trip or "G9" recommended for performance reasons as the to-string format. Again, no need for a local variable points. Note that formatting and parsing string representations of floats is slower than writing and reading them as binary data.
Close ; Consider using a StreamWriter instead. That takes care of encoding and buffering, so you don't have to mess with string builder buffers and byte arrays and all that. With a using statement around the file stream, you don't need to call Close manually here. Either way, you don't need an 'elvis operator' here - inputFileStream obviously won't be null. Either catch it and return false but then the caller won't know why it failed , or don't return anything and let the method throw but document it.
Alternatives floats isn't a whole lot, so unless you need to create a lot of these files, the following code should be fast enough: File. Join ",", values , Encoding. Download Microsoft Edge More info. Contents Exit focus mode. File Stream. Please rate your experience Yes No.
Any additional feedback? Namespace: System. NotSupportedException: The path is in an invalid format. SecurityException: The caller does not have the required permission. Below are the programs to illustrate the File. WriteAllBytes String, Byte[] method. Program 1: Initially, no file was created. Below code, itself creates a file file. Text namespaces using System; using System.
IO; using System. WriteAllBytes path, data ; Console. WriteLine "The data has been written to the file. Above code gives the output as shown above and creates a file with some specified contents shown below- Program 2: Initially, a file was created with some contents shown below: Below code, overwrites the above file contents with a specified byte array data.
WriteLine "The data has been overwritten to the file. After running above code, the above output is shown and the file contents get overwritten which is shown below-.
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