// Create a NetworkAttribute object for the Shape length network attribute from the UtilityNetworkDefinition
using (NetworkAttribute shapeLengthNetworkAttribute = utilityNetworkDefinition.GetNetworkAttribute("Shape length"))
{
// Create a function that adds up shape length
Add lengthFunction = new Add(shapeLengthNetworkAttribute);
// Create a function barrier that stops traversal after 1000 feet
FunctionBarrier distanceBarrier = new FunctionBarrier(lengthFunction, Operator.GreaterThan, 1000.0);
// Set this function barrier
traceConfiguration.Traversability.FunctionBarriers = new List<FunctionBarrier>() { distanceBarrier };
}