error CS0122: 'AmazonS3Client.DeleteObject(DeleteObjectRequest)' is inaccessible due to its protection level

[dburtsev]

Describe the bug

Can't compile C# code from the example:
https://docs.aws.amazon.com/sdkfornet/v3/apidocs/items/S3/TDeleteObjectRequest.html

Expected Behavior

delete s3 object

Current Behavior

error CS0122: 'AmazonS3Client.DeleteObject(DeleteObjectRequest)' is inaccessible due to its protection level

Reproduction Steps

// Create a client
AmazonS3Client client = new AmazonS3Client();

// Create a DeleteObject request
DeleteObjectRequest request = new DeleteObjectRequest
{
BucketName = "SampleBucket",
Key = "Item1"
};

// Issue request
Amazon.S3.Model.DeleteObjectResponse deleteObjectResponse = client.DeleteObject(request);

Possible Solution

No response

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

3.7.7.17

Targeted .NET Platform

NET 6

Operating System and version

Windows 10

[ashishdhingra]

Hi @dburtsev,

Good afternoon.

The DeleteObject (synchronous) version is available for applications targeting .NET Framework (refer). For applications targeting NetStandard (.NET Core or .NET 6), only asynchronous version DeleteObjectAsync is available. This is true for any Amazon service client, not just AmazonS3Client.

Thanks,
Ashish

[dburtsev]

Hi @ashishdhingra

AmazonS3Client client = new AmazonS3Client();
Amazon.S3.Model.DeleteObjectResponse resp =  client.DeleteObjectAsync(bucketName,keyName);

error CS0029: Cannot implicitly convert type 'System.Threading.Tasks.Task<Amazon.S3.Model.DeleteObjectResponse>' to 'Amazon.S3.Model.DeleteObjectResponse'

[ashishdhingra]

@dburtsev Asynchronous versions return Task<T>, instead of T (where T is an object type). For this scenario, to get the original response object,

• You could await on the execution. In such case, your enclosing method should be decorated with async keyword:

AmazonS3Client client = new AmazonS3Client();
Amazon.S3.Model.DeleteObjectResponse resp = await  client.DeleteObjectAsync(bucketName,keyName);

OR

• You could force synchronous call by accessing the Result property (this is not recommended due to obvious reasons):

AmazonS3Client client = new AmazonS3Client();
Amazon.S3.Model.DeleteObjectResponse resp =  client.DeleteObjectAsync(bucketName,keyName).Result;

For more details about async/await pattern, please check Microsoft's documentation at Asynchronous programming with async and await.

[dburtsev]

AmazonS3Client client = new AmazonS3Client();
Amazon.S3.Model.DeleteObjectResponse resp = await client.DeleteObjectAsync(bucketName,keyName);

error CS4032: The 'await' operator can only be used within an async method. Consider marking this method with the 'async' modifier and changing its return type to 'Task'

[ashishdhingra]

Please check Microsoft's documentation at Asynchronous programming with async and await. For example below:

static async Task Main(string[] args)
{
    Coffee cup = PourCoffee();
    Console.WriteLine("coffee is ready");

    Egg eggs = await FryEggsAsync(2);
    Console.WriteLine("eggs are ready");

    Bacon bacon = await FryBaconAsync(3);
    Console.WriteLine("bacon is ready");

    Toast toast = await ToastBreadAsync(2);
    ApplyButter(toast);
    ApplyJam(toast);
    Console.WriteLine("toast is ready");

    Juice oj = PourOJ();
    Console.WriteLine("oj is ready");
    Console.WriteLine("Breakfast is ready!");
}

Kindly raise questions in appropriate forums if you need guidance on topics related to C# programming concepts.

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