Overview of Using Azure Storage API in .NET
- Azure Storage API provides a robust way for .NET applications to store, access, and manage files in scalable cloud storage such as Blob storage.
- It supports various storage types, including Blob, Queue, Table, and File storage.
Install Azure Storage SDK
- Before you can interact with Azure Storage, you need the Azure.Storage.Blobs or Azure.Storage.Files.Shares package installed in your .NET project.
- This can be done via the NuGet Package Manager in Visual Studio or using the .NET CLI.
dotnet add package Azure.Storage.Blobs
Setting Up the Client
- Create a BlobServiceClient instance, which allows you to manipulate Azure Blob storage resources.
- You’ll need a connection string, which you can get from your Azure portal for the storage account you are using.
string connectionString = "<your_connection_string>";
BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
Uploading a File
- The file upload process involves selecting a container in your Blob storage and then uploading the file to this container.
- Use the CreateBlobContainerAsync method to create or access a specific container in your Blob storage.
- Then, use the BlobClient.UploadAsync method to upload the file to Azure Blob storage.
string containerName = "sample-container";
BlobContainerClient containerClient = await blobServiceClient.CreateBlobContainerAsync(containerName);
string fileName = "example.txt";
BlobClient blobClient = containerClient.GetBlobClient(fileName);
using FileStream uploadFileStream = File.OpenRead(fileName);
await blobClient.UploadAsync(uploadFileStream, true);
uploadFileStream.Close();
Handling Errors
- Azure SDK provides extensive error handling capabilities. You may add try-catch blocks to catch any exceptions thrown during the upload or other processes.
- Ensure proper logging and exception management strategies are implemented to handle outages and issues gracefully.
try
{
await blobClient.UploadAsync(uploadFileStream, true);
}
catch (RequestFailedException ex)
{
Console.WriteLine($"Error code: {ex.ErrorCode}");
Console.WriteLine($"Exception Message: {ex.Message}");
}
Conclusion
- Utilize the Azure.Storage.Blobs package in your .NET applications to easily and efficiently interact with Azure blob storage resources.
- Explore advanced features and optimizations like asynchronous operations, SAS tokens, and retry policies for production-ready applications.
