Develop Reference

Any way to make use of ImageClassificationInstance in C#?

I keep getting Grpc.Core.RpcException: Status(StatusCode="Unimplemented" ... exception when I try to use the ImageClassificationInstance objects to classify using a model I have created in the Vertex AI. Is there any way (either by using Google AiPlatform library or using HttpRequest ) to perform ImageClassification with some given image?
The following is the code that I am using
var client = builder.Build();
var instance = new ImageClassificationPredictionInstance() { Content = rawdata };
var parameters = new ImageClassificationPredictionParams() { ConfidenceThreshold = 0.5f, MaxPredictions = 5 };
var pv = ValueConverter.ToValue(parameters);
var iv = new[] { ValueConverter.ToValue(instance) };
var ep = new EndpointName("My project ID", "us-central1", "My endpoint id"); // Of course I have set the string to my project ID and my endpoint ID
var returnobj = client.Predict(ep, iv, pv); // This is where the exception pops up
I can confirm that my vertex AI AutoML model is working on the web browser to classify any uploaded picture.

You must set Endpoint on PredictionServiceClientBuilder :
var client = new PredictionServiceClientBuilder
{
Endpoint = "us-central1-aiplatform.googleapis.com"
}.Build();

ElasticSearch.NET passing AWS Signature v4 in POST requests?

I am very new to ElasticSearch, and have set up an AWS Lambda function in c# to take the content of S3 object(s) (which contain JSON data) with the hopes of posting them to ES to be searchable.
I'm using the Elasticsearch.Net nuget library.
In the documentation here - https://github.com/elastic/elasticsearch-net there is samples of configuring the node URI etc, but my understanding is that any requests to ES need to be signed with AWS Signature V4 (based on Access/Secret key). I have created an IAM user for this purpose, but nowhere in the documentation can I find how to sign the POST requests. The samples show post methods, but no place to include the signature?
E.g.
var person = new Person
{
FirstName = "Martijn",
LastName = "Laarman"
};
var indexResponse = lowlevelClient.Index<BytesResponse>("people", "person", "1", PostData.Serializable(person));
byte[] responseBytes = indexResponse.Body;
var asyncIndexResponse = await lowlevelClient.IndexAsync<StringResponse>("people", "person", "1", PostData.Serializable(person));
string responseString = asyncIndexResponse.Body;
Even when instantiating the connection, nowhere is there a place to add your credentials?
var settings = new ConnectionConfiguration(new Uri("http://example.com:9200"))
.RequestTimeout(TimeSpan.FromMinutes(2));
var lowlevelClient = new ElasticLowLevelClient(settings);
I have checked ConnectionConfiguration object but there's no methods or properties that seem related. What have I missed?

Using the elasticsearch-net-aws package you should be able to set up the low level client like so:
var httpConnection = new AwsHttpConnection("us-east-1"); // or whatever region you're using
var pool = new SingleNodeConnectionPool(new Uri(TestConfig.Endpoint));
var config = new ConnectionConfiguration(pool, httpConnection);
config.DisableDirectStreaming();
var client = new ElasticLowLevelClient(config);
// ...

// if using an access key
var httpConnection = new AwsHttpConnection("us-east-1", new StaticCredentialsProvider(new AwsCredentials
{
AccessKey = "My AWS access key",
SecretKey = "My AWS secret key",
}));
// if using app.config, environment variables, or roles
var httpConnection = new AwsHttpConnection("us-east-1");
var pool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
var config = new ConnectionSettings(pool, httpConnection);
var client = new ElasticClient(config);

SOAP service on Java returns incorrect types in Response

I use a third-party server written in Java.
WSDL is taken with the style of rpc/literal.
Connection to the service is initialized as follows:
private static MLPortChannel GetMerlionClient()
{
BasicHttpsBinding binding = new BasicHttpsBinding(BasicHttpsSecurityMode.Transport);
binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Basic;
binding.MaxReceivedMessageSize = 4096000;
EndpointAddress adress = new EndpointAddress(new Uri(#"https://apitest.merlion.com/rl/mlservice3"));
ChannelFactory<MLPortChannel> factory = new ChannelFactory<MLPortChannel>(binding, adress);
factory.Credentials.UserName.UserName = mlLogin;
factory.Credentials.UserName.Password = mlPassword;
return factory.CreateChannel();
}
It is works correctly only for one method and returns the correct data type and the data.
When I call other methods, they returns error as:
"Can not convert an object of type " ... MLService3RLTest.CatalogResult [] " of the type " ... MLService3RLTest.ShipmentDatesResult []"
In this example return type must be ShipmentDatesResult[].
I tested the service via special tool. All requests and responses is correct and returned correct XML.
What may be the cause of this error? Perhaps something needs to be configured for SOAP service. Maybe some magic option with right value?

If, instead of referring to the service, make a web link which uses the technology of web services .Net FrameWork 2.0 what works
var client = new WpfApplication1.com.merlion.apitest.MLService();
var myCredentials = new System.Net.NetworkCredential(Логин, Пароль);
// Create a webrequest with the specified URL.
var url = "https://apitest.merlion.com/rl/mlservice3";;
client.Credentials = myCredentials.GetCredential(new Uri(url), "Basic");
textBox.AppendText(client.helloWorld("Привет"));
var ответ = client.getCatalog("N1");
var массив = new string[] { "" };
var rz = client.getItems("N10100", массив, "", 0, 2, "");

add
client.PreAuthenticate = true;

Connect CouchDB with asp.net C# application

How to connect couchDB with ASP.NET C# application? If any one can you give a sample application.

I had the same need and after evaluating the options available, to meet the requirements of my application, I created any components that helped me a lot and maybe they can help you and also others. I make it clear that I have no intention of promoting myself here, just sharing something that may be useful.
The detailed explanation of how to configure and use it is on Github.
Link: Nuget Package |
Github
Example of use for retrieving documents with mango-querie:
IList<User> users;
var sts = new List<String> { "ACTIVE", "LOCKED" };
using (UserRepository db = new UserRepository())
{
var query = db.FindOf("list-status", new { id = "OwnerIdloop.user.7", statuses = sts });
users = db.List<User>(query);
}
Array.ForEach(users.ToArray(), Console.WriteLine);
Example of adding documents:
User user = createUser("email#email.com");
using (UserRepository db = new UserRepository())
{
var result = db.Insert<User>(user); // add document and return instance changed with operation revision id
Console.WriteLine(result.Revision);
}
Example of changing documents:
using (UserRepository db = new UserRepository())
{
// Load document data by ID
var user = db.Get<User>("email#email.com");
user.Name = user.Name + "::CHANGED";
var result = db.Update<User>(user); // update document and return instance changed with operation revision id
Console.WriteLine(result.Revision);
}
Example of deleting documents:
using (UserRepository db = new UserRepository())
{
// Load document data by ID
var user = db.Get<User>("email#email.com");
var result = db.Delete<User>(user); // delete document from database. Return true case sucess or false case not deleted
Console.WriteLine($"Sucesso: {result}");
}

After installing the NuGet, just create an instance of MyCouch.Client and pass it the URL of your database.
using (var client = new MyCouchClient("http://127.0.0.1:5984/test"))
{
//Consume here
}
The format is: {scheme}://[{username}:{password}]/{authority}/{localpath}. From v0.11.0, there's a specific MyCouchUriBuilder that you can use for building the Uri. It will automatically e.g. apply Uri.EscapeDataString to username and password when calling SetBasicCredentials.
var uriBuilder = new MyCouchUriBuilder("http://localhost:5984/")
.SetDbName(TestConstants.TestDbName)
.SetBasicCredentials("foob#r", "p#ssword");
return new MyCouchClient(uriBuilder.Build());
For more details Click Here

Is it possible to call Dynamics CRM 2011 late-bound WCF Organization service without the SDK - straight customized binding?

I'm trying to implement a pure WCF scenario where I want to call Dynamics CRM WCF service without relying on the SDK helper classes. Basically, I would like to implement federated authentication against Dynamics CRM 2011 using only native WCF support from the .net framework.
The reason I'm doing this is that I would like to port this scenario later-on to BizTalk.
I've successfully generated proxy classes with SvcUtil, but the part of the policies and security assertions are not compatible with the configuration schema. SvcUtil suggests to build the binding from code instead, which is what I'm trying to do.
The resulting code is here:
private static void CallWcf()
{
OrganizationServiceClient client = null;
try
{
// Login Live.com Issuer Binding
var wsHttpBinding = new WSHttpBinding();
wsHttpBinding.Security = new WSHttpSecurity();
wsHttpBinding.Security.Mode = SecurityMode.Transport;
// Endpoint Binding Elements
var securityElement = new TransportSecurityBindingElement();
securityElement.DefaultAlgorithmSuite = SecurityAlgorithmSuite.TripleDes;
securityElement.IncludeTimestamp = true;
securityElement.KeyEntropyMode = SecurityKeyEntropyMode.CombinedEntropy;
securityElement.MessageSecurityVersion = MessageSecurityVersion.WSSecurity11WSTrust13WSSecureConversation13WSSecurityPolicy12BasicSecurityProfile10;
securityElement.SecurityHeaderLayout = SecurityHeaderLayout.Strict;
var securityTokenParameters = new IssuedSecurityTokenParameters();
securityTokenParameters.InclusionMode = SecurityTokenInclusionMode.AlwaysToRecipient;
securityTokenParameters.ReferenceStyle = SecurityTokenReferenceStyle.Internal;
securityTokenParameters.RequireDerivedKeys = false;
securityTokenParameters.TokenType = null;
securityTokenParameters.KeyType = SecurityKeyType.SymmetricKey;
securityTokenParameters.KeySize = 192;
securityTokenParameters.IssuerAddress = new EndpointAddress("https://login.live.com/extSTS.srf");
securityTokenParameters.IssuerMetadataAddress = null;
securityTokenParameters.DefaultMessageSecurityVersion = null;
securityTokenParameters.IssuerBinding = wsHttpBinding;
securityElement.EndpointSupportingTokenParameters.Signed.Add(securityTokenParameters);
var textMessageEncodingElement = new TextMessageEncodingBindingElement();
textMessageEncodingElement.MaxReadPoolSize = 64;
textMessageEncodingElement.MaxWritePoolSize = 16;
textMessageEncodingElement.MessageVersion = MessageVersion.Default;
textMessageEncodingElement.WriteEncoding = System.Text.Encoding.UTF8;
textMessageEncodingElement.ReaderQuotas.MaxStringContentLength = 8192;
textMessageEncodingElement.ReaderQuotas.MaxArrayLength = 16384;
textMessageEncodingElement.ReaderQuotas.MaxBytesPerRead = 4096;
textMessageEncodingElement.ReaderQuotas.MaxNameTableCharCount = 16384;
var httpsTransportElement = new HttpsTransportBindingElement();
httpsTransportElement.ManualAddressing = false;
httpsTransportElement.AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous;
CustomBinding binding = new CustomBinding();
binding.Elements.Add(securityElement);
binding.Elements.Add(textMessageEncodingElement);
binding.Elements.Add(httpsTransportElement);
client = new OrganizationServiceClient(binding, new EndpointAddress(EndpointUri));
client.ClientCredentials.UserName.UserName = Username;
client.ClientCredentials.UserName.Password = Password;
client.Open();
var columnSet = new schemas.microsoft.com.xrm._2011.Contracts.ColumnSet();
var identifier = new Guid("fbf8240e-2c85-e011-ad55-1cc1de0878eb");
columnSet.Columns = new string[] { "name" };
var entity = client.Retrieve("account", identifier, columnSet);
}
finally
{
if (client != null)
client.Close();
}
}
I'm new to federated authentication and am having a hard time figuring out the potential differences between the many available bindings, so I would be grateful for any help in this regard.

It is probably possible, but hugely complicated. We had a project using Dynamics which moved to ADFS, and required adding lots of extra code around refreshing tokens (code form autorefreshsecuritytoken.cs, deviceidmanager.cs and toolserviceproxies.cs from the SDK) and that was still using the SDK for everything.
Bare in mind you also need windows.identification installed in the OS which is another load of functionality to copy.
In the end you can always just use JustDecompile or similar to see what the SDK is doing.