Nhibernate Merge with new object graph No row with the given identifier exists?

You may use cascade or merge the child separately.

You may use cascade or merge the child separately: ... Merging the children separately: foreach(Child child in parent. Children) { session. Merge(child); } var mergedParent = session.

Merge(parent); I'm actually not sure what happens if the children are already in the session cache but the parent is not. You probably need to build an instance with all the merged data yourself.

I tired, cascade. All, and merge child before parent, but it doesn't work either. In that case I receive exception on merging child that parent doesn't exist.

– Alex Burtsev Jan 17 at 9:51 and cascade=all without merging the children before? – Stefan Steinegger Jan 18 at 7:20.

Adding cascade="merge" or cascade="all" on parent does the job.

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