public OpcDaItemProperties[] GetProperties(IList <string> itemIds, bool returnPropertyValues,
IList <int> propertyIds)
{
var properties = new OpcDaItemProperties[itemIds.Count];
var itemProperties = new IntPtr();
if (propertyIds == null)
{
propertyIds = new int[0];
}
string[] pszItemIDs = itemIds.ToArray();
int[] pdwPropertyIDs = propertyIds.ToArray();
DoComCall(ComObject, "IOpcBrowser::GetProperties", () =>
ComObject.GetProperties(pszItemIDs.Length, pszItemIDs, returnPropertyValues, pdwPropertyIDs.Length,
pdwPropertyIDs, out itemProperties), pszItemIDs.Length,
pszItemIDs, returnPropertyValues, pdwPropertyIDs.Length, pdwPropertyIDs);
IntPtr current = itemProperties;
for (int i = 0; i < itemIds.Count; i++)
{
var opcItemProperties = (OPCITEMPROPERTIES)Marshal.PtrToStructure(current, typeof(OPCITEMPROPERTIES));
properties[i] = ReadItemProperties(ref opcItemProperties);
Marshal.DestroyStructure(current, typeof(OPCITEMPROPERTIES));
current += Marshal.SizeOf(typeof(OPCITEMPROPERTIES));
}
Marshal.FreeCoTaskMem(itemProperties);
return(properties);
}
public static OpcDaItemProperties[] CreateEmptyItemProperties(int size)
{
var result = new OpcDaItemProperties[size];
for (int i = 0; i < result.Length; i++)
{
result[i] = new OpcDaItemProperties {Properties = new OpcDaItemProperty[0]};
}
return result;
}
private static OpcDaItemProperties ReadItemProperties(ref OPCITEMPROPERTIES itemProperties)
{
var result = new OpcDaItemProperties
{
ErrorId = itemProperties.hrErrorID,
Properties = ReadItemProperties(ref itemProperties.pItemProperties, itemProperties.dwNumProperties)
};
return(result);
}
public List <String> BrowseChildren(IOpcDaBrowser browser, string itemId = null, int indent = 0)
{
List <string> result = new List <string>();
// When itemId is null, root elements will be browsed.
OpcDaBrowseElement[] elements = browser.GetElements(itemId);
// Output elements.
foreach (OpcDaBrowseElement element in elements)
{
if (!element.HasChildren)
{
//Console.WriteLine(element);
OpcDaItemProperties[] ppts = browser.GetProperties(new [] { element.ItemId }, new OpcDaPropertiesQuery(true, new int[] { 1 }));
OpcDaItemProperties ppt = (OpcDaItemProperties)ppts.GetValue(0);
/*
* Console.WriteLine(element.ItemId);
* Console.WriteLine(ppt.Properties[0].DataType);
*/
/*
*
* 1 Item Canonical DataType (ItemId: #MonitorACLFile, DataType System.Int16, Value: , ErrorId: S_OK: Success code)
* 2 Item Value (ItemId: #MonitorACLFile, DataType TitaniumAS.Opc.Client.Common.IllegalType, Value: , ErrorId: S_OK: Success code)
* 3 Item Quality (ItemId: #MonitorACLFile, DataType System.Int16, Value: , ErrorId: S_OK: Success code)
* 4 Item Timestamp (ItemId: #MonitorACLFile, DataType System.DateTime, Value: , ErrorId: S_OK: Success code)
* 5 Item Access Rights (ItemId: #MonitorACLFile, DataType System.Int32, Value: , ErrorId: S_OK: Success code)
* 6 this.server Scan Rate (ItemId: #MonitorACLFile, DataType System.Single, Value: , ErrorId: S_OK: Success code)
* 7 Item EU Type (ItemId: #MonitorACLFile, DataType System.Int32, Value: , ErrorId: S_OK: Success code)
* 8 Item EUInfo (ItemId: #MonitorACLFile, DataType System.String[], Value: , ErrorId: S_OK: Success code)
*/
/*
* foreach(OpcDaItemProperty _prop in ppt.Properties)
* {
* Console.WriteLine(_prop);
* }
*/
//element.ItemProperties.Properties.DataType; elemento mais tag datatype
result.Add(element.ItemId + "," + tagTypeConvert((Int16)ppt.Properties[0].Value));
continue;
}
// Output children of the element.
if (element.ItemId != "_Hints")
{
result.AddRange(BrowseChildren(browser, element.ItemId, indent + 2));
}
}
return(result);
}
public static OpcDaItemProperties[] CreateEmptyItemProperties(int size)
{
var result = new OpcDaItemProperties[size];
for (int i = 0; i < result.Length; i++)
{
result[i] = new OpcDaItemProperties {
Properties = new OpcDaItemProperty[0]
};
}
return(result);
}
public static OpcDaItemProperties QueryAvailableProperties(this OpcItemProperties opcItemProperties,
string itemId)
{
string[] ppDescriptions;
VarEnum[] ppvtDataTypes;
var pdwPropertyIDs = opcItemProperties.QueryAvailableProperties(itemId, out ppDescriptions,
out ppvtDataTypes);
var props = new OpcDaItemProperties {Properties = new OpcDaItemProperty[pdwPropertyIDs.Length]};
for (var i = 0; i < pdwPropertyIDs.Length; i++)
{
var property = new OpcDaItemProperty
{
PropertyId = pdwPropertyIDs[i],
Description = ppDescriptions[i],
DataType = TypeConverter.FromVarEnum(ppvtDataTypes[i])
};
props.Properties[i] = property;
}
return props;
}
/// <summary>
/// Gets properties of items by specified item identifiers.
/// </summary>
/// <param name="itemIds">The item identifiers.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of properties of items.
/// </returns>
/// <exception cref="System.InvalidOperationException">Interface IOPCItemProperties not supported.</exception>
public OpcDaItemProperties[] GetProperties(IList <string> itemIds, OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcItemProperties == null)
{
throw new InvalidOperationException("Interface IOPCItemProperties not supported.");
}
if (propertiesQuery == null)
{
propertiesQuery = new OpcDaPropertiesQuery();
}
var result = new OpcDaItemProperties[itemIds.Count];
for (var i = 0; i < result.Length; i++)
{
var itemId = itemIds[i];
try
{
OpcDaItemProperties itemProperties = OpcItemProperties.QueryAvailableProperties(itemId);
if (!propertiesQuery.AllProperties) // filter properties
{
itemProperties.IntersectProperties(propertiesQuery.PropertyIds);
}
if (propertiesQuery.ReturnValues) // read property values
{
OpcItemProperties.GetItemProperties(itemId, itemProperties);
}
OpcItemProperties.LookupItemIDs(itemId, itemProperties);
result[i] = itemProperties;
}
catch (Exception ex)
{
Log.ErrorFormat("Cannot get properties for item '{0}'.", ex, itemId);
result[i] = OpcDaItemProperties.CreateEmpty();
}
}
return(result);
}
/// <summary>
/// Browse the server using specified criteria.
/// </summary>
/// <param name="parentItemId">Indicates the item identifier from which browsing will begin. If the root branch is to be browsed then a null should be passed.</param>
/// <param name="filter">The filtering context.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of browsed elements.
/// </returns>
/// <exception cref="System.InvalidOperationException">Interface IOPCBrowseServerAddressSpace not supported.</exception>
virtual public OpcDaBrowseElement[] GetElements(string parentItemId, OpcDaElementFilter filter = null,
OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcBrowseServerAddressSpace == null)
{
throw new InvalidOperationException("Interface IOPCBrowseServerAddressSpace not supported.");
}
if (parentItemId == null)
{
parentItemId = string.Empty;
}
if (filter == null)
{
filter = new OpcDaElementFilter();
}
var elements = GetElementsImpl(parentItemId, filter);
if (propertiesQuery != null)
{
var properties = GetProperties(elements.Select(e => e.ItemId).ToArray(), propertiesQuery);
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = properties[i];
}
}
else
{
for (var i = 0; i < elements.Length; i++)
{
elements[i].ItemProperties = OpcDaItemProperties.CreateEmpty();
}
}
return(elements);
}
public static OpcDaItemProperties QueryAvailableProperties(this OpcItemProperties opcItemProperties,
string itemId)
{
string[] ppDescriptions;
VarEnum[] ppvtDataTypes;
var pdwPropertyIDs = opcItemProperties.QueryAvailableProperties(itemId, out ppDescriptions,
out ppvtDataTypes);
var props = new OpcDaItemProperties {
Properties = new OpcDaItemProperty[pdwPropertyIDs.Length]
};
for (var i = 0; i < pdwPropertyIDs.Length; i++)
{
var property = new OpcDaItemProperty
{
PropertyId = pdwPropertyIDs[i],
Description = ppDescriptions[i],
DataType = TypeConverter.FromVarEnum(ppvtDataTypes[i])
};
props.Properties[i] = property;
}
return(props);
}
public static OpcDaItemProperties GetItemProperties(this OpcItemProperties opcItemProperties, string itemId,
OpcDaItemProperties properties)
{
opcItemProperties.GetItemProperties(itemId, properties.Properties);
return(properties);
}
public static OpcDaItemProperties LookupItemIDs(this OpcItemProperties opcItemProperties, string itemId,
OpcDaItemProperties properties)
{
opcItemProperties.LookupItemIDs(itemId, properties.Properties);
return(properties);
}
/// <summary>
/// Gets properties of items by specified item identifiers.
/// </summary>
/// <param name="itemIds">The item identifiers.</param>
/// <param name="propertiesQuery">The properties query.</param>
/// <returns>
/// Array of properties of items.
/// </returns>
/// <exception cref="System.InvalidOperationException">Interface IOPCItemProperties not supported.</exception>
public OpcDaItemProperties[] GetProperties(IList<string> itemIds, OpcDaPropertiesQuery propertiesQuery = null)
{
if (OpcItemProperties == null)
throw new InvalidOperationException("Interface IOPCItemProperties not supported.");
if (propertiesQuery == null)
propertiesQuery = new OpcDaPropertiesQuery();
var result = new OpcDaItemProperties[itemIds.Count];
for (var i = 0; i < result.Length; i++)
{
var itemId = itemIds[i];
try
{
OpcDaItemProperties itemProperties = OpcItemProperties.QueryAvailableProperties(itemId);
if (!propertiesQuery.AllProperties) // filter properties
{
itemProperties.IntersectProperties(propertiesQuery.PropertyIds);
}
if (propertiesQuery.ReturnValues) // read property values
{
OpcItemProperties.GetItemProperties(itemId, itemProperties);
}
OpcItemProperties.LookupItemIDs(itemId, itemProperties);
result[i] = itemProperties;
}
catch (Exception ex)
{
Log.ErrorFormat("Cannot get properties for item '{0}'.", ex, itemId);
result[i] = OpcDaItemProperties.CreateEmpty();
}
}
return result;
}
public static OpcDaItemProperties GetItemProperties(this OpcItemProperties opcItemProperties, string itemId,
OpcDaItemProperties properties)
{
opcItemProperties.GetItemProperties(itemId, properties.Properties);
return properties;
}
public static OpcDaItemProperties LookupItemIDs(this OpcItemProperties opcItemProperties, string itemId,
OpcDaItemProperties properties)
{
opcItemProperties.LookupItemIDs(itemId, properties.Properties);
return properties;
}
private static OpcDaItemProperties ReadItemProperties(ref OPCITEMPROPERTIES itemProperties)
{
var result = new OpcDaItemProperties
{
ErrorId = itemProperties.hrErrorID,
Properties = ReadItemProperties(ref itemProperties.pItemProperties, itemProperties.dwNumProperties)
};
return result;
}
public OpcDaItemProperties[] GetProperties(IList<string> itemIds, bool returnPropertyValues,
IList<int> propertyIds)
{
var properties = new OpcDaItemProperties[itemIds.Count];
var itemProperties = new IntPtr();
if (propertyIds == null)
{
propertyIds = new int[0];
}
string[] pszItemIDs = itemIds.ToArray();
int[] pdwPropertyIDs = propertyIds.ToArray();
DoComCall(ComObject, "IOpcBrowser::GetProperties", () =>
ComObject.GetProperties(pszItemIDs.Length, pszItemIDs, returnPropertyValues, pdwPropertyIDs.Length,
pdwPropertyIDs, out itemProperties), pszItemIDs.Length,
pszItemIDs, returnPropertyValues, pdwPropertyIDs.Length, pdwPropertyIDs);
IntPtr current = itemProperties;
for (int i = 0; i < itemIds.Count; i++)
{
var opcItemProperties = (OPCITEMPROPERTIES) Marshal.PtrToStructure(current, typeof (OPCITEMPROPERTIES));
properties[i] = ReadItemProperties(ref opcItemProperties);
Marshal.DestroyStructure(current, typeof (OPCITEMPROPERTIES));
current += Marshal.SizeOf(typeof (OPCITEMPROPERTIES));
}
Marshal.FreeCoTaskMem(itemProperties);
return properties;
}
