【MSCE C#】 如何实现（隐藏/显示）元素附加的属性值？

您好，我想追问是否能实现与原元素属性同样的属性（隐藏/显示）的方法？（如下图所示）

上图是想要实现的效果；

上图为现在实现的效果；

参照帖子：

https://communities.bentley.com/communities/other_communities/chinafirst/f/microstation-projectwise/188940/ec/556173#556173

https://communities.bentley.com/communities/other_communities/chinafirst/f/microstation-projectwise/207218/msce-c

测试代码：

1. 添加代码：

var specification = new InstanceLabelSpecification("false").CreatePopulatedCustomAttributeInstance();
ecClass.SetCustomAttribute(specification);

相关函数：

public static void CreateECDataTable(ECSchema ecSchema, IECClass iecClass)
{
	ECSchema ecSchema = new ECSchema(TestSchema, 1, 0, "Cjxjy");
    IECClass iecClass = ecSchema.AddClass(TestClass);
	iecClass.DisplayLabel = "测试属性表名";
	
	var specification = new InstanceLabelSpecification("false").CreatePopulatedCustomAttributeInstance();
	iecClass.SetCustomAttribute(specification);

	InitializeDataTable();

	foreach (DataRow item in dataTable.Rows)
	{
		string propertyName = item["column1"].ToString() + "_" + item["column2"].ToString() + "(" + item["column3"].ToString() + ")";
		string validName = propertyName;
		ECNameValidation.EncodeToValidName(ref validName);
		IECProperty iecProperty = iecClass.AddProperty(validName, ECObjects.StringType);
		iecProperty.DisplayLabel = propertyName;
	}

	SchemaImportStatus schemaImportStatus = DgnECManager.Manager.ImportSchema(ecSchema, Session.Instance.GetActiveDgnFile(), new ImportSchemaOptions());
	if (schemaImportStatus != SchemaImportStatus.Success) { return; }
}

public void AddInstanceToElement(Element element, Dictionary<string, string> dictionary)
{
	IECSchema iecSchema = GetECSchemaForDgnFile(TestSchema);
	IECClass iecClass = iecSchema.GetClass(TestClass);

	FindInstancesScope scope = FindInstancesScope.CreateScope(element, new FindInstancesScopeOption(DgnECHostType.Element, true));
	ECQuery query = new ECQuery(iecClass);
	using (DgnECInstanceCollection ecInstances = DgnECManager.Manager.FindInstances(scope, query))
	{
		if (ecInstances.Count() > 0) { foreach (IDgnECInstance dgnECInstance in ecInstances) { dgnECInstance.Delete(); } }
		DgnECInstanceEnabler instanceEnabler = DgnECManager.Manager.ObtainInstanceEnabler(Session.Instance.GetActiveDgnFile(), iecClass);
		StandaloneECDInstance instance = instanceEnabler.SharedWipInstance;

		foreach (var item in dictionary)
		{
			string validName = item.Key;
			ECNameValidation.EncodeToValidName(ref validName);
			if (item.Value != null)
			{
				string value = item.Value;
				instance.SetString(validName, value);
			}
		}
		
		instanceEnabler.CreateInstanceOnElement(element, instance, false);
	}
}

实现效果：

测试代码：

2. 添加代码：

var specification = new DisplayOptions(true).CreatePopulatedCustomAttributeInstance();
iecClass.SetCustomAttribute(specification);

相关函数：

public static void CreateECDataTable(ECSchema ecSchema, IECClass iecClass)
{
	ECSchema ecSchema = new ECSchema(TestSchema, 1, 0, "Cjxjy");
    IECClass iecClass = ecSchema.AddClass(TestClass);
	iecClass.DisplayLabel = "测试属性表名";
	
	var specification = new DisplayOptions(true).CreatePopulatedCustomAttributeInstance();
	iecClass.SetCustomAttribute(specification);

	InitializeDataTable();

	foreach (DataRow item in dataTable.Rows)
	{
		string propertyName = item["column1"].ToString() + "_" + item["column2"].ToString() + "(" + item["column3"].ToString() + ")";
		string validName = propertyName;
		ECNameValidation.EncodeToValidName(ref validName);
		IECProperty iecProperty = iecClass.AddProperty(validName, ECObjects.StringType);
		iecProperty.DisplayLabel = propertyName;
	}

	SchemaImportStatus schemaImportStatus = DgnECManager.Manager.ImportSchema(ecSchema, Session.Instance.GetActiveDgnFile(), new ImportSchemaOptions());
	if (schemaImportStatus != SchemaImportStatus.Success) { return; }
}

public void AddInstanceToElement(Element element, Dictionary<string, string> dictionary)
{
	IECSchema iecSchema = GetECSchemaForDgnFile(TestSchema);
	IECClass iecClass = iecSchema.GetClass(TestClass);

	FindInstancesScope scope = FindInstancesScope.CreateScope(element, new FindInstancesScopeOption(DgnECHostType.Element, true));
	ECQuery query = new ECQuery(iecClass);
	using (DgnECInstanceCollection ecInstances = DgnECManager.Manager.FindInstances(scope, query))
	{
		if (ecInstances.Count() > 0) { foreach (IDgnECInstance dgnECInstance in ecInstances) { dgnECInstance.Delete(); } }
		DgnECInstanceEnabler instanceEnabler = DgnECManager.Manager.ObtainInstanceEnabler(Session.Instance.GetActiveDgnFile(), iecClass);
		StandaloneECDInstance instance = instanceEnabler.SharedWipInstance;

		foreach (var item in dictionary)
		{
			string validName = item.Key;
			ECNameValidation.EncodeToValidName(ref validName);
			if (item.Value != null)
			{
				string value = item.Value;
				instance.SetString(validName, value);
			}
		}
		
		instanceEnabler.CreateInstanceOnElement(element, instance, false);
	}
}

实现效果：

测试代码：

3. 添加代码：

IECProperty iecProperty = iecClass.AddProperty(validName, ECObjects.StringType);
iecProperty.DisplayLabel = propertyName;
iecProperty.SetCustomAttribute(Bentley.ECObjects.UI.ECPropertyPane.CreateHidePropertyAttribute(true, true));

相关函数：

public static void CreateECDataTable(ECSchema ecSchema, IECClass iecClass)
{
	ECSchema ecSchema = new ECSchema(TestSchema, 1, 0, "Cjxjy");
    IECClass iecClass = ecSchema.AddClass(TestClass);
	iecClass.DisplayLabel = "测试属性表名";

	InitializeDataTable();

	foreach (DataRow item in dataTable.Rows)
	{
		string propertyName = item["column1"].ToString() + "_" + item["column2"].ToString() + "(" + item["column3"].ToString() + ")";
		string validName = propertyName;
		ECNameValidation.EncodeToValidName(ref validName);
		IECProperty iecProperty = iecClass.AddProperty(validName, ECObjects.StringType);
		iecProperty.DisplayLabel = propertyName;
	}

	SchemaImportStatus schemaImportStatus = DgnECManager.Manager.ImportSchema(ecSchema, Session.Instance.GetActiveDgnFile(), new ImportSchemaOptions());
	if (schemaImportStatus != SchemaImportStatus.Success) { return; }
}

public void AddInstanceToElement(Element element, Dictionary<string, string> dictionary)
{
	IECSchema iecSchema = GetECSchemaForDgnFile(TestSchema);
	IECClass iecClass = iecSchema.GetClass(TestClass);

	FindInstancesScope scope = FindInstancesScope.CreateScope(element, new FindInstancesScopeOption(DgnECHostType.Element, true));
	ECQuery query = new ECQuery(iecClass);
	using (DgnECInstanceCollection ecInstances = DgnECManager.Manager.FindInstances(scope, query))
	{
		if (ecInstances.Count() > 0) { foreach (IDgnECInstance dgnECInstance in ecInstances) { dgnECInstance.Delete(); } }
		DgnECInstanceEnabler instanceEnabler = DgnECManager.Manager.ObtainInstanceEnabler(Session.Instance.GetActiveDgnFile(), iecClass);
		StandaloneECDInstance instance = instanceEnabler.SharedWipInstance;

		foreach (var item in dictionary)
		{
			string validName = item.Key;
			ECNameValidation.EncodeToValidName(ref validName);
			if (item.Value != null)
			{
				string value = item.Value;
				instance.SetString(validName, value);
			}
		}
		
		IEnumerator<IECProperty> propertyEnum = instance.ClassDefinition.GetEnumerator();
		while (propertyEnum.MoveNext())
		{
			IECPropertyValue propertyValue = instance.GetPropertyValue(propertyEnum.Current.Name);
			if (propertyValue != null)
			{
				string strVal;
				propertyValue.TryGetStringValue(out strVal);
				propertyEnum.Current.SetCustomAttribute(ECPropertyPane.CreateHidePropertyAttribute(false, false));
			}
			else
			{
				propertyEnum.Current.SetCustomAttribute(ECPropertyPane.CreateHidePropertyAttribute(true, true));
			}
		}
		
		instanceEnabler.CreateInstanceOnElement(element, instance, false);
	}
}

实现效果：

1. 程序运行完的效果：

2. 再次打开DGN文件的效果