[OPM U6 C#]如何添加relationship

Question

如题，现在可以读取relationship， 实在找不到添加relationship的示例，求示例代码。谢谢！

HongQiang Guo · Accepted Answer

如下实例代码供您参考： 
 FindInstancesScope scopeTemp = FindInstancesScope.CreateScope(Session.Instance.GetActiveDgnFile(), new FindInstancesScopeOption());
 int verMaj = 0, verMin = 0;
 IECSchema mySchema = DgnECManager.Manager.LocateSchemaInScope(scopeTemp, "MySchemaName", verMaj, verMin,
 SchemaMatchType.Latest);
 mySchema = DgnECManager.Manager.LocateSchemaInScope(scopeTemp, "MySchemaName", verMaj, verMin,
 SchemaMatchType.Latest);
 if (null == mySchema)
 {
 return;
 }
 IECClass ecClass = mySchema.GetClass("MyClassGhf");
 ECQuery query = new ECQuery(ecClass);
 FindInstancesScope scope = FindInstancesScope.CreateScope(ele1, new FindInstancesScopeOption(DgnECHostType.Element, true));
 using (DgnECInstanceCollection ecInstances = DgnECManager.Manager.FindInstances(scope, query))
 {
 if (0 == ecInstances.Count())
 return;
 IDgnECInstance dgnEcInsA = ecInstances.ElementAt(0);

 ecClass = mySchema.GetClass("MyClassGhq");
 query = new ECQuery(ecClass);
 scope = FindInstancesScope.CreateScope(ele2, new FindInstancesScopeOption(DgnECHostType.Element, true));
 using (DgnECInstanceCollection ecInstancesB = DgnECManager.Manager.FindInstances(scope, query))
 {
 if (0 == ecInstancesB.Count())
 return;
 IDgnECInstance dgnEcInsB = ecInstancesB.ElementAt(0);
 ECRelationshipClass ecRelaClass = mySchema.GetClass("MyRelationshipClass") as ECRelationshipClass;

 DgnECRelationshipEnabler eCRelationshipEnabler = DgnECManager.Manager.ObtainDgnECRelationshipEnabler(Session.Instance.GetActiveDgnFile(), ecRelaClass);
 if (null != eCRelationshipEnabler)
 {
 eCRelationshipEnabler.CreateRelationshipOnElement(dgnEcInsB, dgnEcInsA);
 }

 }
 } 
 另附上Mstn开发基础学习资料供参考： 
 communities.bentley.com/.../microstation-ce-addin

Liaoyuan Zhang · Answer

// 多个dll中存在一模一样的命名空间，使用别名解决冲突

IECRelationshipInstance iecrelationshipInstance = (IECRelationshipInstance)BOMA::Bentley.OpenPlant.Modeler.Api.BMECApi.Instance.InstanceManager.CreateECInstance("EQUIPMENT_HAS_NOZZLE");&#160;
iecrelationshipInstance.Source = sourceInstance;
iecrelationshipInstance.Target = targetInstance;
// 重新写入
Bentley.Plant.Utilities.DgnUtilities dgnUtilities = DgnUtilities.GetInstance();
dgnUtilities.WriteECInstanceToDgn(iecrelationshipInstance, dgnUtilities.GetDGNConnection());

[OPM U6 C#]如何添加relationship

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