C# int to byte[]

C# int to byte[]

To convert an int to a byte array in C#, you can use the BitConverter.GetBytes method. This method takes an int as a parameter and returns a byte array that represents the integer value in little-endian byte order.

Here's an example that demonstrates how to convert an int to a byte array:

 int num = 12345; byte[] bytes = BitConverter.GetBytes(num); 

In this example, the num variable stores the integer value that you want to convert to a byte array. The BitConverter.GetBytes method is used to convert the integer value to a byte array, which is stored in the bytes variable.

Note that the BitConverter.GetBytes method always returns a byte array of length 4, which corresponds to the size of an int in bytes. If you need to convert a larger integer value to a byte array, you can use the BitConverter.GetBytes method in conjunction with bit shifting and masking operations to extract the individual bytes of the integer value and store them in a byte array.

Examples

  1. "C# convert int to byte array"

    int number = 42; byte[] byteArray = BitConverter.GetBytes(number); // 'byteArray' now contains the byte representation of 'number' 
  2. "C# int to byte array big-endian"

    int number = 42; byte[] byteArray = BitConverter.GetBytes(number); if (BitConverter.IsLittleEndian) Array.Reverse(byteArray); // 'byteArray' now contains the big-endian byte representation of 'number' 
  3. "C# convert byte array to int"

    byte[] byteArray = new byte[] { /* byte values here */ }; int number = BitConverter.ToInt32(byteArray, 0); // 'number' now contains the integer representation of 'byteArray' 
  4. "C# int to byte array with specific endianness"

    int number = 42; byte[] byteArray = BitConverter.GetBytes(number); // 'byteArray' now contains the byte representation of 'number' with the system's endianness 
  5. "C# reverse byte order in int to byte array conversion"

    int number = 42; byte[] byteArray = BitConverter.GetBytes(number); Array.Reverse(byteArray); // 'byteArray' now contains the byte representation of 'number' with reversed byte order 
  6. "C# int to byte array and back"

    int originalNumber = 42; byte[] byteArray = BitConverter.GetBytes(originalNumber); int convertedNumber = BitConverter.ToInt32(byteArray, 0); // 'convertedNumber' now contains the integer representation of 'originalNumber' 
  7. "C# custom int to byte array conversion"

    int number = 42; byte[] byteArray = new byte[sizeof(int)]; for (int i = 0; i < sizeof(int); i++) { byteArray[i] = (byte)(number >> (i * 8)); } // 'byteArray' now contains the byte representation of 'number' 
  8. "C# handle endianness in int to byte array conversion"

    int number = 42; byte[] byteArray = BitConverter.GetBytes(number); if (BitConverter.IsLittleEndian) Array.Reverse(byteArray); // 'byteArray' now contains the byte representation of 'number' with the correct endianness 
  9. "C# int to byte array and vice versa with memory stream"


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