How to Rename a blob on Azure

I came across something today that I think it is good to share, blob names are case-sensitive in windows Azure. So I had to write a program to rename all blobs and change them to lower case. here is the code.

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.WindowsAzure;
using Microsoft.WindowsAzure.StorageClient;

namespace MyBlobRenameApp
{
    public class Process
    {
        private static void RenameBlobs()
        {
            string blobConName = ConfigHelper.BlobContainerName;

            string dataCenterSettingKey = "DefaultEndpointsProtocol=" + 
                                           ConfigHelper.DefaultEndpointsProtocol +
                                          ";AccountName=" + 
                                          ConfigHelper.AccountName +
                                          ";AccountKey=" + 
                                          ConfigHelper.AccountKey;

            CloudStorageAccount cloudStorageAccount = 
                                  CloudStorageAccount.Parse(dataCenterSettingKey);

            CloudBlobClient blobClient = cloudStorageAccount.CreateCloudBlobClient();

            CloudBlobContainer container = 
                                   blobClient.GetContainerReference(blobConName);
            // Create the container if it does not exist.
            container.CreateIfNotExist();

            // Set permissions on the container.
            BlobContainerPermissions permissions = new BlobContainerPermissions();

            containerPermissions.PublicAccess = BlobContainerPublicAccessType.Blob;
            container.SetPermissions(permissions);

           //For example we have 2 blobs VSN/b1 and VSN/b2
            var blobs = container.GetDirectoryReference("VSN").ListBlobs();
            foreach (var item in blobs)
            {
                string blobUri = item.Uri.ToString();

                CloudBlob existBlob = container.GetBlobReference(blobUri);
                CloudBlob newBlob = container.GetBlobReference(blobUri.ToLower());

                newBlob.CopyFromBlob(existBlob);

                existBlob.Delete();
            }
        }
    }
}

Hopefully this post will be useful to somebody who runs into the same problem.