net.sf.mpxj 11.5.1

MPXJ

MPXJ is a Java library which allows a variety of project file formats and databases to be read and written. This NuGet package uses IKVM to translate the Java library into a .Net assembly. You can find details of the classes and methods in the Javadocs, and more general documentation on the MPXJ website.

This package is a direct conversion of the Java version of MPXJ into a .Net assembly. As a result you'll notice the use of getter and setter methods rather than properties, and method names starting with lower case letters. Two additional versions of this assembly are available from NuGet: MPXJ for C# and MPXJ for VB which use properties and naming conventions which will be more familiar to you when working in C# and VB respectively.

After installing this package you can either work with some of the simple built-in utilities provided by MPXJ for tasks like file format conversion:

using net.sf.mpxj.sample;

new MpxjConvert().process("example.mpp", "example.mpx");

or you can interact directly with the object model exposed by MPXJ to extract data:

using net.sf.mpxj.reader;
using Task = net.sf.mpxj.Task;

var project = new UniversalProjectReader().read("example.mpp");

System.Console.WriteLine("Tasks");
foreach (Task task in project.getTasks())
{
    System.Console.WriteLine(task.getID().toString() + "\t" + task.getName());
}

or finally you can generate your own schedule:

using java.text;
using net.sf.mpxj;
using net.sf.mpxj.writer;

// The helper class we use later to actually write the file
// selects the file type based on the extension of the
// filename. In the example below we'll be generating an MSPDI
// file which we can import into Microsoft Project.
var filename = "example.xml";

// Create a simple date format to allow us to easily set date values.
var df = new SimpleDateFormat("dd/MM/yyyy");

// Create a ProjectFile instance
var file = new ProjectFile();

// Add a default calendar called "Standard"
var calendar = file.addDefaultBaseCalendar();

// Add a holiday to the calendar to demonstrate calendar exceptions
calendar.addCalendarException(df.parse("13/03/2006"), df.parse("13/03/2006"));

// Retrieve the project properties and set the start date. Note Microsoft
// Project appears to reset all task dates relative to this date, so this
// date must match the start date of the earliest task for you to see
// the expected results. If this value is not set, it will default to
// today's date.
var properties = file.getProjectProperties();
properties.setStartDate(df.parse("01/01/2003"));

// Set a couple more properties just for fun
properties.setProjectTitle("Created by MPXJ");
properties.setAuthor("Jon Iles");

// Let's create an alias for TEXT1
var customFields = file.getCustomFields();
var field = customFields.getOrCreate(TaskField.TEXT1);
field.setAlias("My Custom Field");

// Add resources
var resource1 = file.addResource();
resource1.setName("Resource1");

var resource2 = file.addResource();
resource2.setName("Resource2");
resource2.setMaxUnits(java.lang.Double.valueOf(50.0));

// Create a summary task
var task1 = file.addTask();
task1.setName("Summary Task");

// Create the first sub task
var task2 = task1.addTask();
task2.setName("First Sub Task");
task2.setDuration(Duration.getInstance(10.5, TimeUnit.DAYS));
task2.setStart(df.parse("01/01/2003"));
task2.setText(1, "My Custom Value 1");

// We'll set this task up as being 50% complete. If we have no resource
// assignments for this task, this is enough information for MS Project.
// If we do have resource assignments, the assignment record needs to
// contain the corresponding work and actual work fields set to the
// correct values in order for MS project to mark the task as complete
// or partially complete.
task2.setPercentageComplete(java.lang.Double.valueOf(50.0));
task2.setActualStart(df.parse("01/01/2003"));

// Create the second sub task
var task3 = task1.addTask();
task3.setName("Second Sub Task");
task3.setStart(df.parse("11/01/2003"));
task3.setDuration(Duration.getInstance(10, TimeUnit.DAYS));
task3.setText(1, "My Custom Value 2");

// Link these two tasks
task3.addPredecessor(task2, RelationType.FINISH_START, null);

// Add a milestone
var milestone1 = task1.addTask();
milestone1.setName("Milestone");
milestone1.setStart(df.parse("21/01/2003"));
milestone1.setDuration(Duration.getInstance(0, TimeUnit.DAYS));
milestone1.addPredecessor(task3, RelationType.FINISH_START, null);

// This final task has a percent complete value, but no
// resource assignments. This is an interesting case it it requires
// special processing to generate the MSPDI file correctly.
var task4 = file.addTask();
task4.setName("Next Task");
task4.setDuration(Duration.getInstance(8, TimeUnit.DAYS));
task4.setStart(df.parse("01/01/2003"));
task4.setPercentageComplete(java.lang.Double.valueOf(70.0));
task4.setActualStart(df.parse("01/01/2003"));

// Assign resources to tasks
var assignment1 = task2.addResourceAssignment(resource1);
var assignment2 = task3.addResourceAssignment(resource2);

// As the first task is partially complete, and we are adding
// a resource assignment, we must set the work and actual work
// fields in the assignment to appropriate values, or MS Project
// won't recognise the task as being complete or partially complete
assignment1.setWork(Duration.getInstance(80, TimeUnit.HOURS));
assignment1.setActualWork(Duration.getInstance(40, TimeUnit.HOURS));

// If we were just generating an MPX file, we would already have enough
// attributes set to create the file correctly. If we want to generate
// an MSPDI file, we must also set the assignment start dates and
// the remaining work attribute. The assignment start dates will normally
// be the same as the task start dates.
assignment1.setRemainingWork(Duration.getInstance(40, TimeUnit.HOURS));
assignment2.setRemainingWork(Duration.getInstance(80, TimeUnit.HOURS));
assignment1.setStart(df.parse("01/01/2003"));
assignment2.setStart(df.parse("11/01/2003"));

// Write a 100% complete task
var task5 = file.addTask();
task5.setName("Last Task");
task5.setDuration(Duration.getInstance(3, TimeUnit.DAYS));
task5.setStart(df.parse("01/01/2003"));
task5.setPercentageComplete(java.lang.Double.valueOf(100.0));
task5.setActualStart(df.parse("01/01/2003"));

// Write a 100% complete milestone
var task6 = file.addTask();
task6.setName("Last Milestone");
task6.setDuration(Duration.getInstance(0, TimeUnit.DAYS));
task6.setStart(df.parse("01/01/2003"));
task6.setPercentageComplete(java.lang.Double.valueOf(100.0));
task6.setActualStart(df.parse("01/01/2003"));

// Write the file
var writer = ProjectWriterUtility.getProjectWriter(filename);
writer.write(file, filename);