private void btnGetTagInfo_Click(object sender, EventArgs e)
{
//Enable time-range picker
btnGetTagData.Enabled = true;
piStartTime.Enabled = true;
piEndTime.Enabled = true;
//Prefill time-range
piStartTime.Text = "*-12h";
piEndTime.Text = "*";
//Clear chart
piDataChart.Series["dataSeries"].Points.Clear();
//Clear list of data
lbPIData.Items.Clear();
//Connect to server
PIServers servers = new PIServers();
PIServer server = servers[piServerPicker1.PIServer.ToString()];
try
{
//Connect to server
server.Connect();
//Extract tag name
string tagname = tbEnterTag.Text;
//Search for tag
IList<PIPoint> points = PIPoint.FindPIPoints(server, new List<string>() { tagname });
if (points.Count == 1)
{
lbTagFound.Text = "PI tag found!";
//Obtain pi point.
PIPoint point = PIPoint.FindPIPoint(server, tagname);
//Extract point attributes
IDictionary<string, object> pointAttribs = point.GetAttributes();
//Extract tag attributes
string tag = pointAttribs["tag"].ToString();
string descriptor = pointAttribs["descriptor"].ToString();
string engunits = pointAttribs["engunits"].ToString();
string pointtype = pointAttribs["pointtype"].ToString();
string pointsource = pointAttribs["pointsource"].ToString();
string creationdate = pointAttribs["creationdate"].ToString();
string creator = pointAttribs["creator"].ToString();
string location1 = pointAttribs["location1"].ToString();
string location2 = pointAttribs["location2"].ToString();
string location3 = pointAttribs["location3"].ToString();
string location4 = pointAttribs["location4"].ToString();
string location5 = pointAttribs["location5"].ToString();
string instrumenttag = pointAttribs["instrumenttag"].ToString();
//Set tag attributes in relevant text fields
piTag.Text = tag;
piDescriptor.Text = descriptor;
piEngUnits.Text = engunits;
piPointType.Text = pointtype;
piPointSource.Text = pointsource;
piCreationDate.Text = creationdate;
piCreator.Text = creator;
piLocation1.Text = location1;
piLocation2.Text = location2;
piLocation3.Text = location3;
piLocation4.Text = location4;
piLocation5.Text = location5;
piInstrumentTag.Text = instrumenttag;
piCurrentValue.Text = point.CurrentValue().ToString();
piCurrentTimestamp.Text = point.CurrentValue().Timestamp.ToString();
//Get data for the tag
btnGetTagData.PerformClick();
} else if (points.Count > 1)
{
//If more than one tag is found matching that name, skip.
//Application is designed to handle only one tag at a time.
lbTagFound.Text = "Single tag use only.";
}
else
{
//If tag cannot be found display message
lbTagFound.Text = "PI tag not found.";
}
} catch (OSIsoft.AF.PI.PIAuthenticationException)
{
//If there is an authentication error trying to connect to the server, display message
lbTagFound.Text = "Permissions Error!";
}
}
