SimpleFileVersioningBlobTrigger.csx

#r "Microsoft.Azure.WebJobs.Extensions.Storage"

public static async Task Run(Stream myBlob, Binder binder, string name, ILogger log)
{
    if (name.Contains("_")) return;

    log.LogInformation($"C# Blob trigger function Processed blob\n Name:{name} \n Size: {myBlob.Length} Bytes");

    var fileName = Path.GetFileNameWithoutExtension(name);
    var fileExtension = Path.GetExtension(name);

    var duplicateName = $"{fileName}_{DateTime.UtcNow.ToString("yyyyMMddHHmmss")}{fileExtension}";

    var blobAttribute = new BlobAttribute($"samples-workitems/{duplicateName}", FileAccess.Write);

    using (var output = await binder.BindAsync<Stream>(blobAttribute))
    {
        await myBlob.CopyToAsync(output);
    }
}