I've done so thanks!
Wehn you have time to answer my question regarding the "types" of the returned values that would be great.
Thanks again.

Thanks for your help!
My results are now exactly what I require.

Key: Data Type Examples.16 Bit Device.R Registers.WordArray Value: System.Int32[]
Key: Data Type Examples.16 Bit Device.R Registers.Boolean1 Value: False
Key: Data Type Examples.16 Bit Device.R Registers.Boolean2 Value: False
Key: Data Type Examples.16 Bit Device.R Registers.Long1 Value: 99391


Code:

int index = 0;

foreach (OpcLabs.EasyOpc.DataAccess.DAVtqResult tag in allTags)
{
ret += string.Format(
"Key: {0} Value: {1}\n",
itemIds.ToArray()[index++].ItemId,
tag.Vtq.Value.ToString()
);
}

Thanks for your reply. I've got this working returning the required values.

Example:

Value: System.Int32[]
Value: False
Value: False
Value: 88016
Value: False
Value: 22482

Some return system data types. Is this because the item has no value?

Lastly I need to have the associated "DANodeElement.itemId " as a key to the value.

Example (key:value):

DANodeElement.itemId : DAVtqResult


Here is the relevant code:



string ret = null;

// itemId's is populated here
BrowseAndReadFromNode("");

OpcLabs.EasyOpc.DataAccess.DAVtqResult[] allTags =
opcClient.ReadMultipleItems(serverDescriptor, itemIds.ToArray())
;

foreach (OpcLabs.EasyOpc.DataAccess.DAVtqResult tag in allTags)
{
ret += string.Format("Value: {0}\n", tag.Vtq.Value.ToString());
}


The only way I see is to iterate over "itemId's" and read one at a time which could be an expensive operation?

Any help would be much appreciated.

As you've stated I'm trying to read all of the itemId's so I can access them individualy.
I have created a loop (3 levels deep) to return values like:

Data Type Examples._System._WriteOptimizationDutyCycle
Simulation Examples._System._WriteOptimizationDutyCycle
Simulation Examples._System._EnableDiagnostics
Simulation Examples.Functions.Ramp4
Simulation Examples.Functions.Sine3
Simulation Examples.Functions.Random1
The loop execution is VERY slow.
Here is the code:


string ret = null;

var nodeFilter = new OpcLabs.EasyOpc.DataAccess.DANodeFilter();

Dictionary<string, OpcLabs.EasyOpc.DataAccess.DANodeElement> nodeDictionary = opcClient.BrowseNodes("", server, "", nodeFilter);

foreach (OpcLabs.EasyOpc.DataAccess.DANodeElement nodeElement in nodeDictionary.Values)
{
if (nodeElement.IsLeaf)
{
object value = opcClient.ReadItemValue("", server, nodeElement.ItemId);

ret += value.ToString() + "\n";
}
else if (nodeElement.IsBranch)
{
Dictionary<string, OpcLabs.EasyOpc.DataAccess.DANodeElement> nodeDictionary2 = opcClient.BrowseNodes("", server, nodeElement.ItemId, nodeFilter);

foreach (OpcLabs.EasyOpc.DataAccess.DANodeElement nodeElement2 in nodeDictionary2.Values)
{
if (nodeElement2.IsLeaf)
{
object value = opcClient.ReadItemValue("", server, nodeElement2.ItemId);

ret += nodeElement2.ToString() + "\n";
}
else if (nodeElement2.IsBranch)
{
Dictionary<string, OpcLabs.EasyOpc.DataAccess.DANodeElement> nodeDictionary3 = opcClient.BrowseNodes("", server, nodeElement2.ItemId, nodeFilter);

foreach (OpcLabs.EasyOpc.DataAccess.DANodeElement nodeElement3 in nodeDictionary3.Values)
{
if (nodeElement3.IsLeaf)
{
object value = opcClient.ReadItemValue("", server, nodeElement3.ItemId);

ret += nodeElement3.ToString() + "\n";
}
else if (nodeElement3.IsBranch)
{
//ret += "branch\n";
}
}
}
}
}


This cannot be the best way? Any help would be much appreciated!

Hi All,As of today I'm new to QuickOPC.NET (just bought license).I need to read all "functions" under "Simulation Examples" and read all "values" for all "functions".Here is how I read a single value from "Functions":opcClient.ReadItemValue("", "KEPware.KEPServerEx.V5", "Simulation Examples.Functions.Ramp1");Here is my attempt to iterate ALL "Functions":const string server = "KEPware.KEPServerEx.V5";OpcLabs.EasyOpc.DataAccess.EasyDAClient opcClient = new OpcLabs.EasyOpc.DataAccess.EasyDAClient() ;var branches = opcClient.BrowseBranches("", server);foreach (var key in branches.Keys){ // Not sure what to do here...}Any help would be appreciated!