Method: ConvertGuidToBase64

uSafi

The code in question creates a span of bytes to hold the GUID. It then copies the bytes of the GUID to the span. Finally, it converts the span to a base64 string.

// this code created by ChatGPT.
// Method that accepts a guid as a string and return a base64 version of the guid, it handle invalid input and it's optimized to not have heap allocations by create a span of bytes to hold the guid.
public string ConvertGuidToBase64(string input)
{
  // Validate the input string
  if (!Guid.TryParse(input, out Guid guid))
  {
    throw new ArgumentException("Input string is not a valid GUID.");
  }

  // Create a span to hold the bytes of the GUID
  Span<byte> bytes = stackalloc byte[16];

  // Copy the bytes of the GUID to the span
  guid.TryWriteBytes(bytes);

  // Convert the span to a base64 string
  return Convert.ToBase64String(bytes);
}

// used like this.
try
{
    string input = "12345678-9ABC-DEF0-1234-56789ABCDEF0";
    string base64 = ConvertGuidToBase64(input);
    Console.WriteLine(base64);
}
catch (ArgumentException ex)
{
    Console.WriteLine(ex.Message);
}