MongoDB GetCollectionNames

[Samad@Programmer]

Hi,

I am Using MongoDB in LabVIEW.

I am able to retrieve all the data from the Mongo Database.

But unable to retrieve the Collection/Column names from the database.

Error:

Property Node (Arg :1) Error accessing property System.Collections.IEnumerator.Current, (System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
Inner Exception: System.InvalidOperationException: Enumeration has either not started or has already finished.) <append><b>System.InvalidOperationException</b> in code1.vi

For reference I am attaching the VI. Kindly Guide me on this.

Thank You.

[tyk007]

You should be using the output of MoveNext to determine whether there are any further items in the collection before attempting to retrieve an index (https://docs.microsoft.com/en-us/dotnet/api/system.collections.ienumerator.movenext?view=netframewor...).

In terms of debugging - check if there are any items in the backing collection (Count).

[Samad@Programmer]

The output of MoveNext is always 'False' even if there are collections in the database.