CodexBloom - Programming Q&A Platform

Azure Blob Storage Upload scenarios with 'The specified blob already exists' scenarios

๐Ÿ‘€ Views: 15 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-11
azure blob-storage azure-functions csharp C#

I'm working on an Azure Function that uploads files to Azure Blob Storage, but I'm working with a 'The specified blob already exists' behavior even when I'm trying to upload a file with a different name. Hereโ€™s the code snippet Iโ€™m using: ```csharp public static async Task<IActionResult> Run(HttpRequest req, ILogger log) { string blobName = req.Query["filename"]; string content = await new StreamReader(req.Body).ReadToEndAsync(); BlobServiceClient blobServiceClient = new BlobServiceClient("<your_connection_string>"); BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient("<your_container_name>"); BlobClient blobClient = containerClient.GetBlobClient(blobName); using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(content))) { await blobClient.UploadAsync(stream, true); } return new OkResult(); } ``` I've tried setting `true` for the `overwrite` parameter, as shown in the `UploadAsync` method, but I still get the same behavior. Iโ€™ve also confirmed that the `filename` query parameter is indeed different for each request. Additionally, I've tried changing the access tier of my Blob Storage from Hot to Cool to see if it had any effect, but that didnโ€™t help either. Iโ€™m using Azure Functions runtime version 3.0 and the latest Azure.Storage.Blobs library version 12.10.0. Any insights on what might be causing this scenario or how I can debug it further would be greatly appreciated!