If you have any questions during development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the API Reference

You can call ObsClient.SetBucketNotification to set event notification for a bucket. Sample code is as follows:

// Create an instance of ObsClient.
ObsClient client = new ObsClient("*** Provide your Access Key ***", "*** Provide your Secret Key ***", "https://your-endpoint");
// Configure event notification.
try
{
    FilterRule filterRule1 = new FilterRule();
    filterRule1.Name = FilterNameEnum.Prefix;
    filterRule1.Value = "smn";
    TopicConfiguration topicConfiguration1 = new TopicConfiguration();
    topicConfiguration1.Id = "Id001";
    topicConfiguration1.Topic = "your topic1 URN";
    topicConfiguration1.Events.Add(EventTypeEnum.ObjectCreatedAll);
    topicConfiguration1.FilterRules.Add(filterRule1);
    FilterRule filterRule2 = new FilterRule();
    filterRule2.Name = FilterNameEnum.Suffix;
    filterRule2.Value = ".jpg";
    TopicConfiguration topicConfiguration2 = new TopicConfiguration();
    topicConfiguration2.Id = "Id002";
    topicConfiguration2.Topic = "your topic2 URN";
    topicConfiguration2.Events.Add(EventTypeEnum.ObjectCreatedAll);
    topicConfiguration2.FilterRules.Add(filterRule2);
    NotificationConfiguration notificationConfiguration = new NotificationConfiguration();
    notificationConfiguration.TopicConfigurations.Add(topicConfiguration1);
    notificationConfiguration.TopicConfigurations.Add(topicConfiguration2);

    FilterRule filterRule3 = new FilterRule();
    filterRule3.Name = FilterNameEnum.Prefix;
    filterRule3.Value = "xxx";
    FunctionGraphConfiguration functionGraphConfiguration = new FunctionGraphConfiguration();
    functionGraphConfiguration.Id = "Id001";
    functionGraphConfiguration.Topic = "your function graph URN";
    functionGraphConfiguration.Events.Add(EventTypeEnum.ObjectCreatedAll);
    functionGraphConfiguration.FilterRules.Add(filterRule3);
    notificationConfiguration.FunctionGraphConfigurations.Add(functionGraphConfiguration);
    SetBucketNotificationRequest request = new SetBucketNotificationRequest
    {
        BucketName = "bucketname",
        Configuration = notificationConfiguration,
    };
    SetBucketNotificationResponse response = client.SetBucketNotification(request);
    Console.WriteLine("Set bucket notification response: {0}", response.StatusCode);
}

catch (ObsException ex)
{
    Console.WriteLine("ErrorCode: {0}", ex.ErrorCode);
    Console.WriteLine("ErrorMessage: {0}", ex.ErrorMessage);
}