ASP.NET framework 4.8 code for file uploding into Azure storage/container using FileUpload control

Question

Hello

For file uploading into Azure Storage / containers using the FileUpload control—preferably upon button click—ASP.NET framework 4.8 code is required.

Thanks in advance

Regards

Chandrakant

Answer 1

Hello Chandrakant Pawle,

Thank you for posting your query here!

First, you need to make sure that you have the Azure.Storage.Blobs NuGet package installed:

You can install it via NuGet Package Manager in Visual Studio.

Install-Package Azure.Storage.Blobs

Can you please try with the following updated code and let us know if it helps:

using Azure.Storage.Blobs;
using System;
using System.IO;
using System.Web.UI;
using System.Web.UI.WebControls;

protected void UploadButton_Click(object sender, EventArgs e)
{
    try
    {
        // Retrieve the connection string from configuration (e.g., Web.config)
        string storageConnectionString = System.Configuration.ConfigurationManager.AppSettings["StorageConnectionString"];

        // Name of your container
        string containerName = "your-container-name";

        // Create a BlobServiceClient
        BlobServiceClient blobServiceClient = new BlobServiceClient(storageConnectionString);

        // Get the container client object
        BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(containerName);

        // Create the container if it does not exist
        containerClient.CreateIfNotExists();

        // Get a reference to a blob
        BlobClient blobClient = containerClient.GetBlobClient(Path.GetFileName(FileUploadControl.FileName));

        if (FileUploadControl.HasFile && FileUploadControl.PostedFile.ContentLength > 0)
        {
            // Upload the file content
            using (Stream uploadFileStream = FileUploadControl.PostedFile.InputStream)
            {
                blobClient.Upload(uploadFileStream, overwrite: true);
            }

            // Provide feedback to the user
            UploadStatusLabel.Text = "File uploaded successfully!";
        }
        else
        {
            // Inform user that a file was not selected or file is empty
            UploadStatusLabel.Text = "Please select a file to upload.";
        }
    }
    catch (Exception ex)
    {
        // Handle any errors that occurred during upload
        UploadStatusLabel.Text = "Upload failed. Error: " + ex.Message;
    }
}

Do let us know if you have any further queries. I’m happy to assist you further.

Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

Answer 2

Certainly! Below is a basic example of how you can upload a file from an ASP.NET FileUpload control to an Azure Storage container using the .NET Framework 4.8:

using Microsoft.Azure.Storage;

using Microsoft.Azure.Storage.Blob;

using System;

using System.IO;

using System.Web.UI.WebControls;

protected void UploadButton_Click(object sender, EventArgs e)

{

    // Retrieve the connection string for your Azure Storage account

    string storageConnectionString = "YourStorageConnectionString";

    // Retrieve reference to the container

    CloudStorageAccount storageAccount = CloudStorageAccount.Parse(storageConnectionString);

    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

    CloudBlobContainer container = blobClient.GetContainerReference("your-container-name");

    // Create the container if it doesn't exist

    container.CreateIfNotExists();

    // Retrieve reference to a blob

    CloudBlockBlob blockBlob = container.GetBlockBlobReference(Path.GetFileName(FileUploadControl.FileName));

    // Upload the file from the FileUpload control to the blob

    using (Stream fileStream = FileUploadControl.FileContent)

    {

        blockBlob.UploadFromStream(fileStream);

    }

    // Optionally, provide feedback to the user upon successful upload

    UploadStatusLabel.Text = "File uploaded successfully!";

}

Make sure to replace "YourStorageConnectionString" with the actual connection string for your Azure Storage account and "your-container-name" with the name of the container where you want to upload the file.

This code assumes you have an ASP.NET FileUpload control named FileUploadControl and a Button control named UploadButton on your ASPX page. The UploadButton_Click event handler is triggered upon clicking the button and performs the file upload operation to Azure Storage.

Answer 3

Thanks Umar for your efforts

But, I guess Microsoft.Azure.Storage.Blob is old and deprecated as per documentation.

Hence, using Azure.Storage.blobs libraries in the code as following:

using Azure.Storage.Blobs;

using Azure.Storage.Blobs.Models;

If possible, could you pls help me in sharing same code using above libraries. Thanks

Regards

Chandrakant

Answer 4

Hello Anand

Thanks for your efforts. The code you shared works perfectly for me

Thanks again...

Regards

Chandrakant