title: Don't Overwrite Azure Blob Storage
body: <p>I have a method which adds files to a Azure Blob Storage the problem is i'm trying to specify a condition in which it DOES NOT overwrite the blob but simply adds to it. I am trying to use the parameter access condition however VS is saying this method cannot take two parameters-
         async void archiveNewImportedImages(List imageFiles)
          {</p>
  
  <pre><code>        // Saving the images
          // Retrieve reference to a blob named "myblob".
  
  
          // Create or overwrite the "myblob" blob with contents from a local file.
  
          using (var fileStream = System.IO.File.OpenRead(@"C:\Users\rahulchawla\Desktop\FilezilleIMGS\FilezilleIMGS\MTO_Image\CR01-1-20170623-1327.jpg"))
          {
  
              await blockBlob.UploadFromStreamAsync(fileStream, accessCondition: AccessCondition.GenerateIfNoneMatchCondition("*"));
          }
  
          // save url of the image into a variable and later to the database
          ///  fileURL = blockBlob.Uri.ToString();
  
  
  
      }
  </code></pre>
  
  <p>Any suggestions?</p>
  
  <p>end goal:  dont overwrite container - keep adding distinct files ex. img1.jpg, img2.jpg to blob</p>
  
  <p>Additional Details: Want to append the images to a container (in other words keep on adding images to the container). If the file exists, then would not want to overwrite the existing file)</p>