IArchive reference

[MSahun]

I am trying to access archive data from AddIns and I've found some examples in the help tab. 
They use IArchiveFilterVariable data type and by adding "using Scada.AddIn.Contracts;" is not working.
I've tried with all the posible extensions that are available from typing "." after Contracts and none seems to work.

Thanks in advanced,

[FredrikV]

Hi!

If you check the Object Model for Addin, there is a summary in the top of the description of each object.
For example:

IRuntimeArchiveFilterVariableCollection

Summary

Returns an "ArchiveFilterVariables" object, containing a collection of the filtered archive variables.

Namespace: Scada.AddIn.Contracts.Historian

Assembly: Scada.AddIn.Contracts (in Scada.AddIn.Contracts.dll) Version=10.0.0.0

Try with "using Scada.AddIn.Contracts.Historian;"

[MSahun]

Yup I've seen this one now. But it does not work for the IArchive datatype only works for the IRuntimeArchive datatype.
Eitherway I am using the IRuntimeArchive to develop my code and its kinda working.

Thanks,

[MSahun]

Hi!

So, I am now able to see all archives of my projects and filter any variable.
But I am not able to query the value list for a variable that have been inserted into the .arx file.

Is this even posible via AddIn?

Thnks in advanced as always,

[MSahun]

Hi!

This is my code, hope it helps to further understand my question.

Thnxs

[FredrikV]

Hi!

I think you want to apply the filter before reading values.

[MSahun]

Hi!

Not working still. 
I've tried to retrive the values using this new method showed on the image attached and applying the filter before but still null.



Thxs,

[FredrikV]

Hi!

Try this example from the help file in zenon 8.10:

using System;
using Scada.AddIn.Contracts;
using Scada.AddIn.Contracts.Historian;
using System.Diagnostics;

namespace Samples
{
    [AddInExtension("Historian.RuntimeArchiveValue", "Project Wizard to create a filter, add variables to it and print out the values", "Samples")]
    public class ProjectWizardExtension_Historian_RuntimeArchiveValue : IProjectWizardExtension
    {
        public void Run(IProject context, IBehavior behavior)
        {
            IRuntimeArchive runtimeArchive = context.RuntimeArchiveCollection[0];

            if (runtimeArchive == null)
            {
                //There is no archive, the user will be informed...
                Debug.Print("No archive available!");
                return;
            }
            IRuntimeArchiveFilter ArchiveFilter = runtimeArchive.FilterCollection.Create();

            for (int i = 0; i < runtimeArchive.VariableCollection.Count; ++i)
            {
                //Add every archive variable to the archive filter
                ArchiveFilter.AddVariable(runtimeArchive.VariableCollection[i]);
            }

            IRuntimeArchiveFilterVariableCollection ArchiveVariables = ArchiveFilter.Query();

            //Get the first available filtered variable
            IRuntimeArchiveFilterVariable ArchiveFilterVariable = ArchiveVariables[0];

            if (ArchiveFilterVariable == null)
            {
                //If there is no variable available, inform the user
                Debug.Print("No filtered archive variable available!");
                return;
            }

            ArchiveFilterVariable.ArchiveValueCollection.Create();
            IRuntimeArchiveValue ArchiveValue = ArchiveFilterVariable.ArchiveValueCollection[0];

            if (ArchiveValue == null)
            {
                //No value available
                Debug.Print("No value available!");
            }
            else
            {
                //Output some information of the value
                Debug.Print("Date / Time: " + ArchiveValue.Time.ToString());

                Debug.Print("Recorded Value: " + ArchiveValue.Value);

                Debug.Print("State: &H" + ArchiveValue.HigherState.ToString());
            }
        }
    }
}

Remember that your AddIn might have an effect on the performance, if it handles a large amount of data!

[MSahun]

Hi, I've used the code and it gets me to a similar place.

Find attached a screenshot of a screen with the archive displayed to ensure that there is data stored and a screenshot of the addin debug where it is not existant. 

Thnxs for the support,

[mst]

You missed this part:

            IRuntimeArchiveFilter ArchiveFilter = runtimeArchive.FilterCollection.Create();

            for (int i = 0; i < runtimeArchive.VariableCollection.Count; ++i)
            {
                //Add every archive variable to the archive filter
                ArchiveFilter.AddVariable(runtimeArchive.VariableCollection[i]);
            }

            IRuntimeArchiveFilterVariableCollection ArchiveVariables = ArchiveFilter.Query();