Access Adroit Tags From External Visual Studio Application

[mcelliers]

Hi I have to rewrite an Application (C#) that connects to Adroit 10 and retrieve TagValues that gets Pushed into a Video Management System.
The previous app was written in VB and I used the following to connect to Adroit:

   SCADAServer = CreateObject("AdroitServer")
    Try
        p = SCADAServer.connect(mComputerName, mServerName)
        mIsConnected = True
    Catch ex As Exception
        'MessageBox.Show(ex.Message, "SCADA Connect Error")
   End Try

I see i cant use the createobject in VS ( C#) So I have added a reference in my Application to AdroitCOMLib

In my source i added:

using AdroitCOMLib;

in a Class function I added the Following:

bool errorState = false;
object ErrorMessage = new object();
Adroit AdrObj = new Adroit();
AdrObj .Connect(mComputerName, mServerName, errorState, ErrorMessage);

But I get the Following Error:

System.Runtime.InteropServices.COMException: ‘Retrieving the COM class factory for component with CLSID {C118226E-2BA1-4D43-9CFC-13C16488BA44} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).’

Am I going the wrong route here ?

[damiand]

Hi Marius,

1. Make sure Your project is for x86 platform as AdroitCOMLib will work only in 32-bit environment.
2. You can use in C# VIZNET dlls for third party connections. Check the example from following topic:
   https://adroittechnologiesautomation.com/t/how-to-connect-to-the-smartui-server-from-a-third-party-application/12
3. AdroitCOM is little bit different, however check following example:

using AdroitCOMLib;

Variable declarations:

private AdroitCOMLib.AdroitClass _ASD = new AdroitClass();
private bool _Connected = false;
private bool _Error = false;
private object _ErrorMsg= new object();

and then function:

if(!_Connected)
{
_ASD.Connect("", “”, ref _Error, ref _ErrorMsg);
if (_Error)
{
toolStripLabel1.Text = “Failed to connect to local server:” + _ErrorMsg as String;
return;
}
else
{
_Connected = true;
}
}
_ASD.CreateAgent(textBox1.Text, textBox2.Text, textBox3.Text, ref _Error, ref _ErrorMsg);
if (_Error)
{
toolStripLabel1.Text = “Failed to create Agent:” + _ErrorMsg as String;
return;
}
else
{
toolStripLabel1.Text = “Succesfully created Agent”;
}

Where the CreateAgent function in Intellisense will show You it is name of Agent, type of Agent and description for the Connect function, the first parameter is Your connection string (computername and agentserver name).

[mcelliers]

Hi. Thank you for the Info. For this Project I need to Connect Directly to the AS. SmartUI server not Running. Changing my Build to x86 removed the error I received.
I have tried the example as above, but if I create an instance of AdroitClass, I get a compilation error:
Interop type ‘AdroitClass’ cannot be embedded. Use the applicable interface instead

If I use the Interface; Adroit, I get no error:
AdroitCOMLib.Adroit AdrObj = new Adroit();

When I use the Connect Function, I get no Error in the response, But it is also not working.
( I have created a manifests file to run the App in administrator to ensure it is not a security Issue)

I made a simple application to test this issue.(please see attached)

AdroitReadTest.zip (68.0 KB)

[damiand]

Hi Marius,
This is because You are trying to embed dll in Your project, which actually should reside in Adroit folder and be used there.

In your Project, expand the “References”, find the AdroitCOMLib reference. Right click it and select properties, and change “Embed Interop Types” to false. Then You can use my method.

[mcelliers]

Thank you. I have have changed the “Embed Interop Types” to false.
I see, I must have the “Copy local” property to true otherwise the Application gets an issue.

When I run a GetSlot function : ( After Connection)

AdrObj.GetSlot(“systemInfo”, “currentTime”, _result,_errorState, _errorMsg);

my ErrorState is false, but my _result is empty ( also _errorMsg is empty)

So for some reason I still can get the Tag Values, And I also don’t get any errors.

[damiand]

Hi Marius,
Remember to check the type of result object. In case of systemInfo.second it will be int32.

This is very rough example but it works:

public partial class Form1 : Form
{
    private AdroitCOMLib.AdroitClass _ASD = new AdroitClass();
    private bool _Connected = false;
    private bool _Error = false;
    private object _ErrorMsg= new object();
    private object _Result = new object();

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        if(!_Connected)
        {
            _ASD.Connect("127.0.0.1", "Adroit", ref _Error, ref _ErrorMsg);
            if (_Error)
            {
                toolStripLabel1.Text = "Failed to connect to local server:" + _ErrorMsg as String;
                return;
            }
            else
            {
                _Connected = true;
            }
        }
        
        _ASD.GetSlot("systemInfo","second", ref _Result, ref _Error, ref _ErrorMsg);
        if (_Error)
        {
            toolStripLabel1.Text = "Failed to read Agent:" + _ErrorMsg as String;
            return;
        }
        else
        {
            toolStripLabel1.Text = "Succesfully read Agent";
            int ResultNumber = (int)_Result;
            ResultLabel.Text = ResultNumber.ToString();
        }

    }
}