(non-hacky) way to upload file to PageBlob using C# Azure SDK - azure

Question

I use this Python code to upload to PageBlob by manually chunking the file. It works. I translated that logic to C#. I am wondering is there a simpler solution built into Azure SKD? less hacky solution.
byte[] bytes = (encoding ?? Encoding.UTF8).GetBytes(content);
int fileSize = bytes.Length;
int blockSize = fileSize;
int boundary = blockSize % 512;
if (boundary != 0)
{
byte[] padding = Enumerable.Repeat((byte)0x0, 512 - boundary).ToArray();
bytes = bytes.Concat(padding).ToArray();
blockSize = blockSize + 512 - boundary;
}
// Allocate pages
cloudPageBlob.Create(
blockSize,
accessCondition,
options,
operationContext);
var CHUNK_MAX_SIZE = 4 * 1024 * 1024;
var count = (int)Math.Ceiling(1.0 * bytes.Length / CHUNK_MAX_SIZE);
int remaining = bytes.Length;
for (var i = 0; i < count; i++)
{
int chunkSize = Math.Min(CHUNK_MAX_SIZE, remaining);
cloudPageBlob.UploadFromByteArray(
bytes,
i,
chunkSize,
accessCondition,
options,
operationContext);
remaining -= chunkSize;
}

Answer 1

I tried in my system able to upload chunks and slightly modify your code , taken dummy bytes to testing purpose
using System;
using System.Linq;
using System.Text;
using Microsoft.Azure.Storage;
using Microsoft.Azure.Storage.Auth;
using Microsoft.Azure.Storage.Blob;
namespace UploadPageChunck
{
class Program
{
static void Main(string[] args)
{
Uri uri = new Uri("blob uri");
Console.WriteLine("Hello World!");
AccessCondition data =null;
byte[] bytes= { 0x32, 0x00, 0x1E, 0x00 , 0x00 , 0x00 , 0x00 , 0x00 };
//byte[] bytes= { 0x32, 0x00, 0x1E, 0x00 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00, 0x00, 0x00, };
var storage = new StorageCredentials("testsnapshotex", "Storage key ”)
int fileSize = bytes.Length;
int blockSize = fileSize;
int boundary = blockSize % 512;
if (boundary != 0)
{
byte[] padding = Enumerable.Repeat((byte)0x0, 512 - boundary).ToArray();
bytes = bytes.Concat(padding).ToArray();
blockSize = blockSize + 512 - boundary;
}
// Allocate pages
CloudPageBlob cloudPageBlob = new CloudPageBlob(uri,storage);
//cloudPageBlob.Create(
// blockSize,
// null,
// null,
// null);
var CHUNK_MAX_SIZE = 4 * 1024 * 1024;
var count = (int)Math.Ceiling(1.0 * bytes.Length / CHUNK_MAX_SIZE);
int remaining = bytes.Length;
for (var i = 0; i < count; i++)
{
int chunkSize = Math.Min(CHUNK_MAX_SIZE, remaining);
cloudPageBlob.UploadFromByteArray(
bytes,
i,
chunkSize,
null,
data,
null);
remaining -= chunkSize;
}
}
}
}
OUTPUT