Converting an absolute path to a node Id|OPC UA Implementation: Stacks, Tools, and Samples|Forum|OPC Foundation

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Converting an absolute path to a node Id
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Dolton Knief
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12/01/2022 - 07:46
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Hello!

I'm trying convert an absolute path to a node id instead of a relative path in .NET, but I can't seem to figure out how to do that.

For example, the path for a node I'm trying to read is Root\Objects\EC\WT\13\WGRI1\Gri1\WMeas\mag

But when I try the below code, it doesn't work, although the starting node is Objects folder. 

var browsePathCollection = new BrowsePathCollection

{
    new BrowsePath
    {
        RelativePath = RelativePath.Parse(@"EC\WT\13\WGRI1\Gri1\WMeas\mag", this._session.TypeTree),
        StartingNode = ObjectIds.ObjectsFolder
    }
};

var paths = await this._session.TranslateBrowsePathsToNodeIdsAsync(null, browsePathCollection , new CancellationToken());

Can you someone guide me in the right direction please?

Thank you.

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Randy Armstrong
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12/02/2022 - 05:24
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The path you show is not complete. Each element in the path has a namespace that qualifies the name.

If you express the path using the NamespaceIndex (from the Server.NamespaceArray Property)

0:Root/0:Objects/1:EC/1:WT/1:13/1:WGRI1/2:Gri1/2:WMeas/2:mag

Then TranslateBrowsePathsToNodeIdsAsync should works as expected.

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Zbyněk Zahradník
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12/02/2022 - 06:30
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Also, you should use '/' instead of '\'.

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Dolton Knief
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12/09/2022 - 05:40
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Thank you Randy and Zbyněk, it worked successfully with your suggestions.

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