public override long Seek(long offset, SeekOrigin origin)
{
return(_inner.Seek(offset, origin));
}
static async Task BlobAsync()
{
try
{
CloudStorageAccount sa = CloudStorageAccount.Parse(connectionString);
CloudBlobClient bc = sa.CreateCloudBlobClient();
const string CON_NAME = "smart-blob-container";
CloudBlobContainer con = bc.GetContainerReference(CON_NAME);
bool rr = await con.CreateIfNotExistsAsync();
const string blobName = "my.txt";
CloudPageBlob blob = con.GetPageBlobReference(blobName);
bool del = await blob.DeleteIfExistsAsync();
await blob.CreateAsync(64 *1024, AccessCondition.GenerateIfNotExistsCondition(), new BlobRequestOptions(), new OperationContext());
using (CloudBlobStream blobStream = await blob.OpenWriteAsync(null, AccessCondition.GenerateEmptyCondition(), new BlobRequestOptions(), new OperationContext()))
{
byte[] sector = new byte[512];
for (int ii = 0; ii < sector.Length; ++ii)
{
sector[ii] = (byte)(ii % 26 + 'A');
}
MemoryStream mm = new MemoryStream(sector);
//byte[] buffer = Encoding.UTF8.GetBytes("zzz宏发科技恢复健康哈尔月UI风雅颂的法尔加zzz----");
//await blobStream.WriteAsync(buffer, 0, buffer.Length);
//await blobStream.WriteAsync(sector, 0, sector.Length - buffer.Length);
await blobStream.WriteAsync(sector, 0, sector.Length);
if (blobStream.CanSeek)
{
blobStream.Seek(1024, System.IO.SeekOrigin.Begin);
}
//buffer = Encoding.UTF8.GetBytes("this is some test");
//await blobStream.WriteAsync(buffer, 0, buffer.Length);
//await blobStream.WriteAsync(sector, 0, sector.Length - buffer.Length);
await blobStream.WriteAsync(sector, 0, sector.Length);
await blobStream.FlushAsync();
}
using (Stream blobStream = await blob.OpenReadAsync())
{
byte[] buffer = new byte[2048];
const int firstReadCount = 8;
int rc = await blobStream.ReadAsync(buffer, 0, firstReadCount);
if (blobStream.CanSeek)
{
blobStream.Seek(rc, SeekOrigin.Begin);
}
rc = await blobStream.ReadAsync(buffer, 8, buffer.Length - firstReadCount);
string text = Encoding.UTF8.GetString(buffer);
Console.WriteLine(text);
}
}
catch (Exception ex)
{
Console.WriteLine($"{ex}");
}
}