Get the Latest Modified File Azure Blob Storage using .NET

Today in this article, we shall see how to get latest modified File Azure Blob Storage using .NET .

We will use Storage blob Client library v12 for .NET.

We will also see how to get details on the date when the azure blob got created or deleted or leased etc.

Azure Blob storage is used for storing the data in the cloud.

Blob storage is optimized for storing unstructured data supporting multiple formats of files such as text or binary data.

Today in this article, we will cover below aspects,

Let’s see step by step all the above operation and understand how it works.

Prerequisites

• Create Azure subscription 

• Create Storage Account in Azure Portal

Getting Started

Create any .NET application. Here I am using the Console .NET Core application,

Please install Nuget packages,

PM> Install-Package Azure.Storage.Blobs -Version 12.6.0

Or Using Nuget Package Manager

Please note that the Blob class provides a few properties related to blob time-specific attributes

Example

Get the last modified date for The Blob

Property name : LastModified 

This gives you Blob’s last modified dates

Getting the date of the blob got created

Property name : CreatedOn 

This property gives you a Blob Created date

Blob Deleted date

This property gives Blob Deleted date

Property name:  DeletedOn 

Blob LeaseDuration, LeaseState

Property name: LeaseDuration

This property gives Blob lease duration

We can get a list of all blobs for the given search criteria using the below one-liner,

var resultBlob = container.GetBlobs().OrderByDescending(m => m.Properties.LastModified).ToList();

Here below is the complete code base.

I have a total of 3 files in the storage account created at different timestamps.

            string stAccountconnectionString = configuration["StorageAccountConString"];

            string blobName = configuration["BlobName"];

            string containerName = configuration["ContainerName"];

            // Get a reference to a container
            BlobContainerClient container = new BlobContainerClient(stAccountconnectionString, containerName);

       
            var resultBlob = container.GetBlobs().OrderByDescending(m => m.Properties.LastModified).ToList();


            foreach (BlobItem blobSt in resultBlob)
            {
                Console.WriteLine(blobSt.Name);

                //Perform your business logic here
            }

I get the list of all blobs based on last modified dates(descending order) as below,

You can use the below code and use additional properties as discussed above depending upon the requirements you are dealing with.

blobSt.Properties.DeletedOn


blobSt.Properties.LastModified


blobSt.Properties.CreatedOn

References:

• Azure Blob – Upload and Download data using C#.NET

Do you have any comments or ideas or any better suggestions to share?

Please sound off your comments below.

Happy Coding !!

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