Hi,

I am new to PI, I have to update the PI tag value using AFSDK in .net. not directly using PI sdk.
Is it possible to do it? If yes, how?.
I tried this, but now don't know how to proceed further...

DateTime dtQueryDate = dtGetDatePicker.Value;
PISystems myAFSystems = new PISystems();
myAFSystem = myAFSystems[txbPISystem.Text];
myAFDB = myAFSystem.Databases[databasename];
AFDatabase queriedAFDB = myAFDB.ApplyQueryDate(dtQueryDate);
Int32 intElements;
AFNamedCollectionList<AFElement> AFElementsList
= AFElement.FindElements(queriedAFDB,
null,
"*",
AFSearchField.Name,
true,
AFSortField.Name,
AFSortOrder.Ascending,
1000);
lstElements.Items.Clear();
foreach (AFElement item in AFElementsList)
{
lstElements.Items.Add(item.Name);
AFAttributes itemAttr = item.Attributes;
foreach (AFAttribute attr in itemAttr)
{
AFValue val = attr.GetValue();

/*AFDataReference reff = attr.DataReference;
//if (reff.IsConfigured())
if (reff != null)
{
AFPlugIn plg = reff.PlugIn;
}*/

/* How can I get the PIPoint object here */
}

}

Thanks,

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Thanks for your reply, It would be nice if you can post the code also.

Thanks a lot for all your help.
One more question, can we update the value of the PI tag from AFSDK.
I tried below code sometime it works but some time it is giving null pointer exception at 'SelPIPoint.Data line.
Am I doing something wrong here? Would appreciate your help.

AFAttribute attr = AFelem.Attributes("BHT");
if (attr.DataReference.Name =="PI Point) then
{
PIPoint SelPIPoint = (PISDK.PIPoint)attr.RawPIPoint;
PISDK.PIData ptData = SelPIPoint.Data;
ptData.UpdateValue(newValue, 0, PISDK.DataMergeConstants.dmInsertDuplicates, null);
}