ExtendedAttribute.DurationValue

ExtendedAttribute.DurationValue property

Gets or sets value for attributes with ‘Duration’ type.

public Duration DurationValue { get; set; }

Exceptions

exceptioncondition
InvalidOperationExceptionThrown if the AttributeDefinition property is not initialized or custom field type of AttributeDefinition property is not a Duration instance.

Examples

Shows how to add extended attributes that uses MS Project date/time formulas.

var project = new Project();
var task = project.RootTask.Children.Add("Task");

var numberDefinition = ExtendedAttributeDefinition.CreateTaskDefinition(ExtendedAttributeTask.Number1, null);
project.ExtendedAttributes.Add(numberDefinition);

var numberAttribute = numberDefinition.CreateExtendedAttribute();
task.ExtendedAttributes.Add(numberAttribute);

// Set ProjDateDiff formula and print extended attribute value
numberDefinition.Formula = "ProjDateDiff(\"03/23/2015\",\"03/18/2015\")";
Console.WriteLine(numberAttribute.NumericValue);
numberDefinition.Formula = "ProjDateDiff(\"03/23/2015\",\"03/25/2015\")";
Console.WriteLine(numberAttribute.NumericValue);

var dateDefinition = ExtendedAttributeDefinition.CreateTaskDefinition(ExtendedAttributeTask.Date1, null);
project.ExtendedAttributes.Add(dateDefinition);
var dateAttribute = dateDefinition.CreateExtendedAttribute();
task.ExtendedAttributes.Add(dateAttribute);

var durationDefinition = ExtendedAttributeDefinition.CreateTaskDefinition(ExtendedAttributeTask.Duration4, "Custom duration field");
project.ExtendedAttributes.Add(durationDefinition);
var durationAttribute = durationDefinition.CreateExtendedAttribute();
task.ExtendedAttributes.Add(durationAttribute);

var textDefinition = ExtendedAttributeDefinition.CreateTaskDefinition(ExtendedAttributeTask.Text5, "Custom text field");
project.ExtendedAttributes.Add(textDefinition);
var textAttribute = textDefinition.CreateExtendedAttribute();
task.ExtendedAttributes.Add(textAttribute);

// Set ProjDateSub formula and print extended attribute value
dateDefinition.Formula = "ProjDateSub(\"3/19/2015\", \"1d\")";
Console.WriteLine(dateAttribute.DateValue);

// We can set ProjDurConv formula to duration-valued attribute as well as to text-valued attribute.
// Set ProjDurConv formula to duration-valued extended attribute and print its value.
durationDefinition.Formula = "ProjDurConv([Duration], pjHours)";
Console.WriteLine(durationAttribute.DurationValue);

// Set ProjDurConv formula to text-valued extended attribute and print its value.
textDefinition.Formula = "ProjDurConv([Duration], pjWeeks)";
Console.WriteLine(textAttribute.TextValue);

// Set Second formula and print extended attribute value
numberDefinition.Formula = "Second(\"4/21/2015 2:53:41 AM\")";
Console.WriteLine(numberAttribute.NumericValue);

// Set Weekday formula and print extended attribute value
numberDefinition.Formula = "Weekday(\"24/3/2015\", 1)";
Console.WriteLine(numberAttribute.NumericValue);
numberDefinition.Formula = "Weekday(\"24/3/2015\", 2)";
Console.WriteLine(numberAttribute.NumericValue);
numberDefinition.Formula = "Weekday(\"24/3/2015\", 3)";
Console.WriteLine(numberAttribute.NumericValue);

See Also

ExtendedAttribute.DateValue ExtendedAttribute.FieldId