| public static GetAttributeDisplayText ( Session session, uint attributeId, Variant value ) : string | ||
| session | Session | The currently active session. |
| attributeId | uint | The id of the attribute. |
| value | Variant | The value of the attribute. |
| return | string | |
/// <summary>
/// Reads the attributes for the node.
/// </summary>
private void ReadAttributes(NodeId nodeId)
{
// build list of attributes to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
foreach (uint attributeId in Attributes.GetIdentifiers())
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = nodeId;
nodeToRead.AttributeId = attributeId;
nodesToRead.Add(nodeToRead);
}
// read the attributes.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// add the results to the display.
for (int ii = 0; ii < results.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
}
// add the metadata for the attribute.
uint attributeId = nodesToRead[ii].AttributeId;
ListViewItem item = new ListViewItem(Attributes.GetBrowseName(attributeId));
item.SubItems.Add(Attributes.GetBuiltInType(attributeId).ToString());
if (Attributes.GetValueRank(attributeId) >= 0)
{
item.SubItems[0].Text += "[]";
}
// add the value.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.SubItems.Add(results[ii].StatusCode.ToString());
}
else
{
item.SubItems.Add(ClientUtils.GetAttributeDisplayText(m_session, attributeId, results[ii].WrappedValue));
}
item.Tag = results[ii];
// display in list.
AttributesLV.Items.Add(item);
}
// set the column widths.
for (int ii = 0; ii < AttributesLV.Columns.Count; ii++)
{
AttributesLV.Columns[ii].Width = -2;
}
}