private ReferenceDescriptionCollection GetReferenceDescriptionCollection(NodeId sourceId)
{
TaskCompletionSource <ReferenceDescriptionCollection> task = new TaskCompletionSource <ReferenceDescriptionCollection>();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method | NodeClass.ReferenceType | NodeClass.ObjectType | NodeClass.View | NodeClass.VariableType | NodeClass.DataType);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method | NodeClass.View | NodeClass.ReferenceType | NodeClass.ObjectType | NodeClass.VariableType | NodeClass.DataType);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_OpcUaClient.Session, nodesToBrowse, false);
return(references);
}
/// <summary>
/// 浏览一个节点的引用
/// </summary>
/// <param name="tag">节点值</param>
/// <returns>引用节点描述</returns>
public ReferenceDescription[] BrowseNodeReference(string tag)
{
NodeId sourceId = new NodeId(tag);
// 该节点可以读取到方法
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// 该节点无论怎么样都读取不到方法
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
return(references.ToArray());
}
/// <summary>
/// Populates the branch in the tree view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
/// <param name="nodes">The node collect to populate.</param>
private async Task PopulateBranch(NodeId sourceId, TreeNodeCollection nodes)
{
try
{
nodes.Clear();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
Cursor.Current = Cursors.WaitCursor;
// fetch references from the server.
ReferenceDescriptionCollection references = await Task.Run(() => FormUtils.Browse(m_groupLog.Server.Connection.Session, nodesToBrowse, false));
Cursor.Current = Cursors.Default;
// process results.
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription target = references[ii];
// add node.
TreeNode child = new TreeNode(Utils.Format("{0}", target));
child.Tag = target;
child.Nodes.Add(new TreeNode());
nodes.Add(child);
if (target.NodeClass == NodeClass.Variable)
{
child.ImageKey = "label_icon";
child.SelectedImageKey = "label_icon";
}
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>浏览一个节点的引用</summary>
/// <param name="tag"></param>
/// <returns></returns>
public ReferenceDescription[] BrowseNodeReference(string tag)
{
NodeId nodeId = new NodeId(tag);
BrowseDescription browseDescription1 = new BrowseDescription();
browseDescription1.NodeId = nodeId;
browseDescription1.BrowseDirection = BrowseDirection.Forward;
browseDescription1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
browseDescription1.IncludeSubtypes = true;
browseDescription1.NodeClassMask = 7U;
browseDescription1.ResultMask = 63U;
BrowseDescription browseDescription2 = new BrowseDescription();
browseDescription2.NodeId = nodeId;
browseDescription2.BrowseDirection = BrowseDirection.Forward;
browseDescription2.ReferenceTypeId = ReferenceTypeIds.Organizes;
browseDescription2.IncludeSubtypes = true;
browseDescription2.NodeClassMask = 3U;
browseDescription2.ResultMask = 63U;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(browseDescription1);
nodesToBrowse.Add(browseDescription2);
return(FormUtils.Browse(this.m_session, nodesToBrowse, false).ToArray());
}
/// <summary>
/// 读取一个节点的指定属性
/// </summary>
/// <param name="nodeId"></param>
/// <param name="attribute"></param>
/// <returns></returns>
private DataValue ReadNoteDataValueAttributes(NodeId nodeId, uint attribute)
{
NodeId sourceId = nodeId;
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = attribute;
nodesToRead.Add(nodeToRead);
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(CommonMethods.opcUaClient.Session, nodesToBrowse, false);
if (references == null)
{
return(null);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead2 = new ReadValueId();
nodeToRead2.NodeId = (NodeId)references[ii].NodeId;
nodeToRead2.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead2);
}
// read all values.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
CommonMethods.opcUaClient.Session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
return(results[0]);
}
/// <summary>
/// Populates the branch in the tree view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
/// <param name="nodes">The node collect to populate.</param>
private void PopulateBranch(NodeId sourceId, TreeNodeCollection nodes)
{
try
{
nodes.Clear();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
// process results.
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription target = references[ii];
// add node.
TreeNode child = new TreeNode(Utils.Format("{0}", target));
child.Tag = target;
child.Nodes.Add(new TreeNode());
nodes.Add(child);
}
// update the attributes display.
DisplayAttributes(sourceId);
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>读取一个节点的所有属性</summary>
/// <param name="tag"></param>
/// <returns></returns>
//public OpcuaNodeAttribute[] ReadNoteAttributes(string tag)
//{
// NodeId nodeId = new NodeId(tag);
// ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// for (uint index = 2; index <= 22U; ++index)
// nodesToRead.Add(new ReadValueId()
// {
// NodeId = nodeId,
// AttributeId = index
// });
// int count = nodesToRead.Count;
// BrowseDescription browseDescription = new BrowseDescription();
// browseDescription.NodeId = nodeId;
// browseDescription.BrowseDirection = BrowseDirection.Forward;
// browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty;
// browseDescription.IncludeSubtypes = true;
// browseDescription.NodeClassMask = 0U;
// browseDescription.ResultMask = 63U;
// BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
// nodesToBrowse.Add(browseDescription);
// ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false);
// if (descriptionCollection == null)
// return new OpcuaNodeAttribute[0];
// for (int index = 0; index < descriptionCollection.Count; ++index)
// {
// if (!descriptionCollection[index].NodeId.IsAbsolute)
// nodesToRead.Add(new ReadValueId()
// {
// NodeId = (NodeId)descriptionCollection[index].NodeId,
// AttributeId = 13U
// });
// }
// DataValueCollection results = (DataValueCollection)null;
// DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null;
// this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos);
// ClientBase.ValidateResponse((IList)results, (IList)nodesToRead);
// ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead);
// List<OpcNodeAttribute> opcNodeAttributeList = new List<OpcNodeAttribute>();
// for (int index = 0; index < results.Count; ++index)
// {
// OpcNodeAttribute opcNodeAttribute1 = new OpcNodeAttribute();
// BuiltInType builtInType;
// if (index < count)
// {
// if (!(results[index].StatusCode == 2150957056U))
// {
// opcNodeAttribute1.Name = Attributes.GetBrowseName(nodesToRead[index].AttributeId);
// if (StatusCode.IsBad(results[index].StatusCode))
// {
// opcNodeAttribute1.Type = Utils.Format("{0}", (object)Attributes.GetDataTypeId(nodesToRead[index].AttributeId));
// opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode);
// }
// else
// {
// TypeInfo typeInfo = TypeInfo.Construct(results[index].Value);
// OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1;
// builtInType = typeInfo.BuiltInType;
// string str = builtInType.ToString();
// opcNodeAttribute2.Type = str;
// if (typeInfo.ValueRank >= 0)
// opcNodeAttribute1.Type += "[]";
// opcNodeAttribute1.Value = results[index].Value;
// }
// }
// else
// continue;
// }
// else if (!(results[index].StatusCode == 2150891520U))
// {
// opcNodeAttribute1.Name = Utils.Format("{0}", (object)descriptionCollection[index - count]);
// if (StatusCode.IsBad(results[index].StatusCode))
// {
// opcNodeAttribute1.Type = string.Empty;
// opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode);
// }
// else
// {
// TypeInfo typeInfo = TypeInfo.Construct(results[index].Value);
// OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1;
// builtInType = typeInfo.BuiltInType;
// string str = builtInType.ToString();
// opcNodeAttribute2.Type = str;
// if (typeInfo.ValueRank >= 0)
// opcNodeAttribute1.Type += "[]";
// opcNodeAttribute1.Value = results[index].Value;
// }
// }
// else
// continue;
// opcNodeAttributeList.Add(opcNodeAttribute1);
// }
// return opcNodeAttributeList.ToArray();
//}
/// <summary>读取一个节点的所有属性</summary>
/// <param name="tag"></param>
/// <returns></returns>
public DataValue[] ReadNoteDataValueAttributes(string tag)
{
NodeId nodeId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (uint index = 1; index <= 22U; ++index)
{
nodesToRead.Add(new ReadValueId()
{
NodeId = nodeId,
AttributeId = index
});
}
int count = nodesToRead.Count;
BrowseDescription browseDescription = new BrowseDescription();
browseDescription.NodeId = nodeId;
browseDescription.BrowseDirection = BrowseDirection.Forward;
browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty;
browseDescription.IncludeSubtypes = true;
browseDescription.NodeClassMask = 0U;
browseDescription.ResultMask = 63U;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(browseDescription);
ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false);
if (descriptionCollection == null)
{
return(new DataValue[0]);
}
for (int index = 0; index < descriptionCollection.Count; ++index)
{
if (!descriptionCollection[index].NodeId.IsAbsolute)
{
nodesToRead.Add(new ReadValueId()
{
NodeId = (NodeId)descriptionCollection[index].NodeId,
AttributeId = 13U
});
}
}
DataValueCollection results = (DataValueCollection)null;
DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null;
this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos);
ClientBase.ValidateResponse((IList)results, (IList)nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead);
return(results.ToArray());
}
/// <summary>
/// Handles the BeforeExpand event of the BrowseTV control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.Windows.Forms.TreeViewCancelEventArgs"/> instance containing the event data.</param>
private void BrowseTV_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
ReferenceDescription reference = (ReferenceDescription)e.Node.Tag;
e.Node.Nodes.Clear();
// browse HasEventSource to display the sources but it won't be possible to select them.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = Opc.Ua.ObjectTypeIds.BaseEventType;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds.HasSubtype;
nodeToBrowse.IncludeSubtypes = false;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
// add the childen to the control.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodeToBrowse, false);
for (int ii = 0; ii < references.Count; ii++)
{
reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
TreeNode child = new TreeNode(reference.ToString());
child.Nodes.Add(new TreeNode());
child.Tag = reference;
e.Node.Nodes.Add(child);
}
}
catch (Exception exception)
{
MessageBox.Show(exception.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// Displays the attributes and properties in the attributes view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
private void DisplayAttributes(NodeId sourceId)
{
try
{
AttributesLV.Items.Clear();
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// attempt to read all possible attributes.
for (uint ii = Attributes.NodeClass; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return;
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
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);
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
string name = null;
string datatype = null;
string value = null;
// process attribute value.
if (ii < startOfProperties)
{
// ignore attributes which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
// get the name of the attribute.
name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = Utils.Format("{0}", Attributes.GetDataTypeId(nodesToRead[ii].AttributeId));
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// process property value.
else
{
// ignore properties which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadNodeIdUnknown)
{
continue;
}
// get the name of the property.
name = Utils.Format("{0}", references[ii - startOfProperties]);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = String.Empty;
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// add the attribute name/value to the list view.
ListViewItem item = new ListViewItem(name);
item.SubItems.Add(datatype);
item.SubItems.Add(value);
AttributesLV.Items.Add(item);
}
// adjust width of all columns.
for (int ii = 0; ii < AttributesLV.Columns.Count; ii++)
{
AttributesLV.Columns[ii].Width = -2;
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// 读取一个节点的所有属性
/// </summary>
/// <param name="tag">节点值</param>
/// <returns>所有的数据</returns>
public DataValue[] ReadNoteDataValueAttributes(string tag)
{
NodeId sourceId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// attempt to read all possible attributes.
// 尝试着去读取所有可能的特性
for (uint ii = Attributes.NodeId; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return(new DataValue[0]);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
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);
return(results.ToArray());
}
/// <summary>
/// 读取一个节点的所有属性
/// </summary>
/// <param name="tag">节点信息</param>
/// <returns>节点的特性值</returns>
public OpcNodeAttribute[] ReadNoteAttributes(string tag)
{
NodeId sourceId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// attempt to read all possible attributes.
// 尝试着去读取所有可能的特性
for (uint ii = Attributes.NodeClass; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return(new OpcNodeAttribute[0]);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
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);
// process results.
List <OpcNodeAttribute> nodeAttribute = new List <OpcNodeAttribute>();
for (int ii = 0; ii < results.Count; ii++)
{
OpcNodeAttribute item = new OpcNodeAttribute();
// process attribute value.
if (ii < startOfProperties)
{
// ignore attributes which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
// get the name of the attribute.
item.Name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.Type = Utils.Format("{0}", Attributes.GetDataTypeId(nodesToRead[ii].AttributeId));
item.Value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
item.Type = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
item.Type += "[]";
}
item.Value = results[ii].Value;//Utils.Format("{0}", results[ii].Value);
}
}
// process property value.
else
{
// ignore properties which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadNodeIdUnknown)
{
continue;
}
// get the name of the property.
item.Name = Utils.Format("{0}", references[ii - startOfProperties]);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.Type = String.Empty;
item.Value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
item.Type = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
item.Type += "[]";
}
item.Value = results[ii].Value; //Utils.Format("{0}", results[ii].Value);
}
}
nodeAttribute.Add(item);
}
return(nodeAttribute.ToArray());
}
