I am working on a MVC application in which I need to work with Microsoft Azure storage .I had a requirement to create An Azure storage container from the MVC application. In this post I will share my learning that how I created a container programmatically.

I created the view as shown in below image. User has to enter the azure storage account name, azure storage key and the name of the container to be created.

image

Above View is MVC razor view, and it is created using the cshtml as shown below:

 


@{
    ViewBag.Title = "BLOB Manager";
}
<div class="jumbotron">
    <div class="row">
        <div class="col-md-8">
            <section id="loginForm">
                @using (Html.BeginForm("AzureInfo", "Manage", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
                {
                    @Html.AntiForgeryToken()
                    <h2> Manage BLOB Container</h2>
                    <hr />
                    @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                    <div class="form-group">
                        <div class="col-md-10 input-group input-group-lg">
                            @Html.TextBox("AccountName", "", new { @class = "form-control", @placeholder = "Account Name" })
                            @Html.ValidationMessage("AccountName", "", new { @class = "text-danger" })
                        </div>
                    </div>
                    <div class="form-group">

                        <div class="col-md-10 input-group input-group-lg">
                            @Html.TextBox("AccountKey", "", new { @class = "form-control", @placeholder = "Account Key" })
                            @Html.ValidationMessage("AccountKey", "", new { @class = "text-danger" })
                        </div>
                    </div>
                    <div class="form-group">

                        <div class="col-md-10 input-group input-group-lg">
                            @Html.TextBox("ContainerName", "", new { @class = "form-control", @placeholder = "Container Name" })
                            @Html.ValidationMessage("containername", "", new { @class = "text-danger" })
                        </div>
                    </div>
                    <div class="form-group input-group input-group-lg">
                        <div class="col-md-offset-2 col-md-10">
                            <input type="submit" value="Create Container" class="btn btn-lg btn-success" />
                        </div>
                    </div>

                }
            </section>
        </div>
    </div>
</div>

Above I am creating,

  • Three text boxes with the placeholder and the class set to bootstrap form-control
  • A submit button with the class set to bootstrap btn-lg and btn-success
  • All the controls are inside the form.
  • On form post operation, AzureInfo action of the Manage controller will be called.

Once the View is ready, let us go ahead and create an azure utility class. In this class we will put all the operations related to the azure storage. But before that you need to add Azure storage library to the project. Either you can use NuGet package manager or console to add the library. I am using console to install Azure storage library. I have taken the 4.3 version because at the time of writing this post, this was the latest stable version available.

image

Once package is successfully installed, add following namespaces.

 


using Microsoft.WindowsAzure.Storage;
using Microsoft.WindowsAzure.Storage.Auth;
using Microsoft.WindowsAzure.Storage.Blob;
using Microsoft.WindowsAzure;

To create the container in the Azure storage, I have created a function CreateContainer. This function takes three input parameters, account name, account key and the container name.

 


public static class AzureUtility
    {
        public static string  CreateContainer(string AccountName, string AccountKey, string ContainerName)
        {

            string UserConnectionString = string.Format("DefaultEndpointsProtocol=https;AccountName={0};AccountKey={1}", AccountName, AccountKey);
            CloudStorageAccount storageAccount = CloudStorageAccount.Parse(UserConnectionString);
            CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
            CloudBlobContainer container = blobClient.GetContainerReference(ContainerName.ToLower());
            if (container.CreateIfNotExists())
            {
                container.SetPermissions(new BlobContainerPermissions { PublicAccess = BlobContainerPublicAccessType.Blob });
                return container.Name;
            }
            else
            {
                return string.Empty;
            }
        }
    }

Now let us examine the above code line by line.

  • In first line I created the connection string for the azure storage. It takes two parameters, account name and the account key. These values are passed as input parameter to the function. I am using these two parameter to create connection string.
  • Using CloudStorageAccount to parse the connection string from the constructed string.
  • Creating the CloudBlobClient
  • Getting the container reference of the BLOB.
  • If container reference does not exist, creating new container.
  • On successful creation of the container function returns name of the container else empty string.

 


[HttpPost]
        public ActionResult AzureInfo(string AccountName, string AccountKey, string ContainerName)
        {

           var result= AzureUtility.CreateContainer(AccountName, AccountKey, ContainerName);

           if (result != string.Empty)
             {

                 return RedirectToAction("Index", "Home");
             }
             else
             {
                 return RedirectToAction("Index");
             }
        }

In the action we are using the utility class to create the container. In this way an azure container can be created from the MVC application.

I hope it is useful. Thanks for reading. Happy Coding.

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