Trabajar con atributos de tareas extendidas

En el proyecto Microsoft, un atributo de tarea extendido es un elemento utilizado para capturar datos para un campo de tareas personalizado. Aspose.Tasks puede crear y recuperar información de atributos extendidos para todas las versiones de Microsoft Project: 2003, 2007, 2010 y 2013.

Agregar información de atributo extendida para una tarea

Crear un atributo extendido requiere los siguientes pasos:

1. Create [ExtendedAttributeDefinition[(https://reference.aspose.com/tasks/net/aspose.tasks/extendedattributedefinition) for the Attribute with necessary parameters

2. Create ExtendedAttribute from the definition in the previous step

3. Add the created ExtendedAttribute to the task

// Create new project
Project project = new Project("New Project.mpp");

// Create an Extended Attribute Definition of Text1 type
var taskExtendedAttributeText1Definition = ExtendedAttributeDefinition.CreateTaskDefinition(CustomFieldType.Text, ExtendedAttributeTask.Text1, "Task City Name");

// Add it to the project's Extended Attributes collection
project.ExtendedAttributes.Add(taskExtendedAttributeText1Definition);

// Add a task to the project
Task task = project.RootTask.Children.Add("Task 1");

// Create an Extended Attribute from the Attribute Definition
var taskExtendedAttributeText1 = taskExtendedAttributeText1Definition.CreateExtendedAttribute();

// Assign a value to the generated Extended Attribute. The type of the attribute is "Text", the "TextValue" property should be used.
taskExtendedAttributeText1.TextValue = "London";

// Add the Extended Attribute to task
task.ExtendedAttributes.Add(taskExtendedAttributeText1);

project.Save("PlainTextExtendedAttribute_out.mpp", SaveFileFormat.MPP);

Project project = new Project("New Project.mpp");

// Create an Extended Attribute Definition of Text2 type
var taskExtendedAttributeText2Definition = ExtendedAttributeDefinition.CreateLookupTaskDefinition(CustomFieldType.Text, ExtendedAttributeTask.Text2, "Task Towns Name");

// Add lookup values for the extended attribute definition
taskExtendedAttributeText2Definition.AddLookupValue(new Value { Id = 1, StringValue = "Town1", Description = "This is Town1" });
taskExtendedAttributeText2Definition.AddLookupValue(new Value { Id = 2, StringValue = "Town2", Description = "This is Town2" });

// Add it to the project's Extended Attributes collection
project.ExtendedAttributes.Add(taskExtendedAttributeText2Definition);

// Add a task to the project
var task2 = project.RootTask.Children.Add("Task 2");

// Crate an Extended Attribute from the Text2 Lookup Definition for Id 1
var taskExtendedAttributeText2 = taskExtendedAttributeText2Definition.CreateExtendedAttribute(taskExtendedAttributeText2Definition.ValueList[1]);

// Add the Extended Attribute to task
task2.ExtendedAttributes.Add(taskExtendedAttributeText2);

project.Save("TextExtendedAttributeWithLookup_out.mpp", SaveFileFormat.MPP);

Project project2 = new Project("New Project.mpp");

// Create an Extended Attribute Definition of Duration2 type
var taskExtendedAttributeDuration2Definition = ExtendedAttributeDefinition.CreateLookupTaskDefinition(CustomFieldType.Duration, ExtendedAttributeTask.Duration2, "Some duration");

// Add lookup values for extended attribute definition
taskExtendedAttributeDuration2Definition.AddLookupValue(new Value { Id = 2, Duration = project2.GetDuration(4, TimeUnitType.Hour), Description = "4 hours" });
taskExtendedAttributeDuration2Definition.AddLookupValue(new Value { Id = 3, Duration = project2.GetDuration(1, TimeUnitType.Day), Description = "1 day" });
taskExtendedAttributeDuration2Definition.AddLookupValue(new Value { Id = 4, Duration = project2.GetDuration(1, TimeUnitType.Hour), Description = "1 hour" });
taskExtendedAttributeDuration2Definition.AddLookupValue(new Value { Id = 7, Duration = project2.GetDuration(10, TimeUnitType.Day), Description = "10 days" });

// Add the definition to the project's Extended Attributes collection
project2.ExtendedAttributes.Add(taskExtendedAttributeDuration2Definition);

// Add a task to the project
var task3 = project2.RootTask.Children.Add("Task 3");

// Create an Extended Attribute from the Duration2 Lookup Definition for Id 3
var taskExtendedAttributeDuration2 = taskExtendedAttributeDuration2Definition.CreateExtendedAttribute(taskExtendedAttributeDuration2Definition.ValueList[3]);

// Add the Extended Attribute to task
task3.ExtendedAttributes.Add(taskExtendedAttributeDuration2);

project2.Save("DurationExtendedAttributeWithLookup_out.mpp", SaveFileFormat.MPP);

Project project3 = new Project("New Project.mpp");

// Create an Extended Attribute Definition of Finish2 Type
var taskExtendedAttributeFinish2Definition = ExtendedAttributeDefinition.CreateLookupTaskDefinition(CustomFieldType.Finish, ExtendedAttributeTask.Finish2, "Some finish");

// Add lookup values for extended attribute defintion
taskExtendedAttributeFinish2Definition.AddLookupValue(new Value { Id = 2, DateTimeValue = new DateTime(1984, 01, 01, 00, 00, 01), Description = "This is Value2" });
taskExtendedAttributeFinish2Definition.AddLookupValue(new Value { Id = 3, DateTimeValue = new DateTime(1994, 01, 01, 00, 01, 01), Description = "This is Value3" });
taskExtendedAttributeFinish2Definition.AddLookupValue(new Value { Id = 4, DateTimeValue = new DateTime(2009, 12, 31, 00, 00, 00), Description = "This is Value4" });
taskExtendedAttributeFinish2Definition.AddLookupValue(new Value { Id = 7, DateTimeValue = DateTime.Now, Description = "This is Value6" });

// Add the definition to the project's Extended Attributes collection
project3.ExtendedAttributes.Add(taskExtendedAttributeFinish2Definition);

// Add a task to the project
var task4 = project3.RootTask.Children.Add("Task 4");

// Create an Extended Attribute from the Finish2 Lookup Definition for Id 3
var taskExtendedAttributeFinish2 = taskExtendedAttributeFinish2Definition.CreateExtendedAttribute(taskExtendedAttributeFinish2Definition.ValueList[3]);

// Add the Extended Attribute to task
task4.ExtendedAttributes.Add(taskExtendedAttributeFinish2);

project3.Save("FinishExtendedAttributeWithLookup_out.mpp", SaveFileFormat.MPP);

Reading Extended Task Attributes Information

The ExtendedAttribute property exposed by the Task class is used to manage a task’s extended attributes. This property reads and writes an ArrayList of ExtendedAttribute objects to deal with a task’s extended attributes. The ExtendedAttribute object further exposes the relevant properties.

The following example shows how to view a task’s extended attributes with Aspose.Tasks.

Project project = new Project("New Project.mpp");

// Read extended attributes for tasks
foreach (Task task in project.RootTask.Children)
{
    foreach (ExtendedAttribute ea in task.ExtendedAttributes)
    {
        Console.WriteLine(ea.FieldId);
        Console.WriteLine(ea.ValueGuid);

        switch (ea.AttributeDefinition.CfType)
        {
            case CustomFieldType.Date:
            case CustomFieldType.Start:
            case CustomFieldType.Finish:
                Console.WriteLine(ea.DateValue);
                break;

            case CustomFieldType.Text:
                Console.WriteLine(ea.TextValue);
                break;

            case CustomFieldType.Duration:
                Console.WriteLine(ea.DurationValue.ToString());
                break;

            case CustomFieldType.Cost:
            case CustomFieldType.Number:
                Console.WriteLine(ea.NumericValue);
                break;

            case CustomFieldType.Flag:
                Console.WriteLine(ea.FlagValue);
                break;
        }
    }
}