title: How to use placeholder in Azure Storage Blob?
body: <p>I'll be performing some calls to blobs in Azure Storage. There will be some cases where I'll be calling blobs that don't exist.</p>
  
  <p>My question is do I need to check on each call if the blob exists using </p>
  
  <pre><code>public static bool BlobExistsOnCloud(CloudBlobClient client, 
      string containerName, string key)
  {
       return client.GetContainerReference(containerName)
                    .GetBlockBlobReference(key)
                    .Exists();  
  }
  </code></pre>
  
  <p>or can I perform some sort of configuration on the container to show a placeholder in case the specific blob does not exist?</p>
  
  <p>Thanks</p>