LoggingContext.SyntheticParentId Property

When this property returns a non-null value, the SyntheticId property shall use the value of the SyntheticParentId property as the parent identifier, instead of recursively building the synthetic identifier based on ParentContext. You can set this property when you open a custom activity by configuring the OpenActivityOptions object.

public virtual string SyntheticParentId { get; }