// snippet-start:[Rekognition.dotnetv3.ListCollectionsExample]
public static async Task Main()
{
var rekognitionClient = new AmazonRekognitionClient();
Console.WriteLine("Listing collections");
int limit = 10;
var listCollectionsRequest = new ListCollectionsRequest
{
MaxResults = limit,
};
var listCollectionsResponse = new ListCollectionsResponse();
do
{
if (listCollectionsResponse is not null)
{
listCollectionsRequest.NextToken = listCollectionsResponse.NextToken;
}
listCollectionsResponse = await rekognitionClient.ListCollectionsAsync(listCollectionsRequest);
listCollectionsResponse.CollectionIds.ForEach(id =>
{
Console.WriteLine(id);
});
}while (listCollectionsResponse.NextToken is not null);
}
public static string Collection(string collectionId)
{
try
{
var rekognitionClient = new AmazonRekognitionClient(RegionEndpoint.APSouth1);
Console.WriteLine("Creating collection: " + collectionId);
var createCollectionRequest = new CreateCollectionRequest()
{
CollectionId = collectionId
};
int limit = 10;
ListCollectionsResponse listCollectionsResponse = null;
String paginationToken = null;
if (listCollectionsResponse != null)
{
paginationToken = listCollectionsResponse.NextToken;
}
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
MaxResults = limit,
NextToken = paginationToken
};
listCollectionsResponse = rekognitionClient.ListCollectionsAsync(listCollectionsRequest).Result;
foreach (var resultId in listCollectionsResponse.CollectionIds)
{
if (resultId == collectionId)
{
return("OK");
}
else
{
var createCollectionResponse =
rekognitionClient.CreateCollectionAsync(createCollectionRequest);
Console.WriteLine("CollectionArn : " + createCollectionResponse.Result.CollectionArn);
if (createCollectionResponse.Result.StatusCode == 200)
{
return("OK");
}
}
}
}
catch (Exception ex)
{
Console.WriteLine("Exception occurred" + ex);
return("");
}
return("");
}
private async Task <List <string> > GetCollections(AmazonRekognitionClient rekognitionClient)
{
ListCollectionsResponse listCollectionsResponse = null;
ListCollectionsRequest listCollectionsRequest = new ListCollectionsRequest()
{
//MaxResults = limit, //declare a limit
//NextToken = paginationToken
};
listCollectionsResponse = await rekognitionClient.ListCollectionsAsync(listCollectionsRequest);
return(listCollectionsResponse.CollectionIds);
}
