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  1. Forum
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  5. QuickOPC-Classic in .NET
  7. Browsing, Browse Dialogs and Controls
  9. Browsing a tree leaf with 20,000 items fails with Exception (timeout)

Browsing a tree leaf with 20,000 items fails with Exception (timeout)

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23 Dec 2020 15:25 #9314 by micham
Replied by micham on topic Browsing a tree leaf with 20,000 items fails with Exception (timeout)
Hi,

We are using the DAItemDialog component. Please let me know when the next version is available.

Thank you.

Michael

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22 Dec 2020 06:34 #9305 by support
Replied by support on topic Browsing a tree leaf with 20,000 items fails with Exception (timeout)
If you were calling a "Browse" method from your code, it would be possible to increase the timeout, in easyDAClient.InstanceParameters.Timeouts.BrowseNodes.

The DAItemDialog, however, currently only works with all parameters set to default, and there is no way to change them. So, it is not currently possible to change the timeout for DAItemDialog.

It would not be a big deal to expose these settings for DAItemDialog (and other dialogs as well), but only as a planned change to the next version (2021.1), which will take some months.

Regards

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21 Dec 2020 17:39 #9302 by micham
Browsing a tree leaf with 20,000 items fails with Exception (timeout) was created by micham
When browsing a tree leaf with 20,000 OPC items, I get an error:

Timeout browsing nodes.
+ The client method called was 'BrowseNodes'.

When I try the same with Matrikon OPC Explorer, I can browse and see all 20,000 items.

The exception details are below:
Exceptions

Type: OpcLabs.BaseLib.Browsing.BrowseException
Data:
HelpLink:
HResult: -2146233088 (0x80131500)
InnerException:
System.Runtime.InteropServices.COMException (0xC004C004): Timeout browsing nodes.
+ The client method called was 'BrowseNodes'.
Data: OpcLabs.EasyOpc.DataAccess.Implementation.ExceptionEnhancingEasyDAClient.Processed: True
ErrorCode: -1073430524
HelpLink:
HResult: -1073430524 (0xc004c004)
InnerException:
Message:
Timeout browsing nodes.
+ The client method called was 'BrowseNodes'.
Source: OpcLabs.EasyOpcRaw.DataAccess.RawEasyDAClient
StackTrace:
TargetSite:
Message: Problem browsing OPC Data Access (OPC-DA) branches.
Source:
StackTrace:
TargetSite:



Any idea how to avoid this error?
Thank you.
Michael
Attachments:

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  1. Forum
  3. Discussions
  5. QuickOPC-Classic in .NET
  7. Browsing, Browse Dialogs and Controls
  9. Browsing a tree leaf with 20,000 items fails with Exception (timeout)
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