在System.Windows.Form的UserControl上未调用UserControl.OnLoad

Question

我有一个ProjectViewForm，一个ProjectView和一个Project。由于缺少初始化和数据，ProjectView.OnLoad方法没有被调用，并且在尝试显示ProjectViewForm时导致应用程序崩溃。

如何获取用ProjectView数据初始化的Project对象，即如何获得OnLoad的呼叫？

[SmartPart]
public partial class ProjectViewForm : Form
{
    public ProjectViewForm()
    {
        InitializeComponent(); // gets here
    }

    protected override void OnLoad(System.EventArgs eventArgs)
    {
        System.Diagnostics.Trace.WriteLine(""); // doesn't get here
    }
}

public partial class ProjectView : System.Windows.Forms.UserControl
{
    public ProjectView()
    {
       InitializeComponent();
       ...
    }
    protected override void OnLoad(System.EventArgs eventArgs)
    {
            this._presenter.OnViewReady();
            base.OnLoad(eventArgs);
            ... populate with Project data ...
    }
}

Project是一个POCO，其数据填充了ProjectView

在ProjectViewForm.Designer.cs中，实例化一个新的Project和ProjectView：

partial class ProjectViewForm
{
    private void InitializeComponent()
    {
        Project project1 = new Project();
        System.ComponentModel.ComponentResourceManager resources = new 
        System.ComponentModel.ComponentResourceManager(typeof(ProjectViewForm));
        this.projectView1 = new ProjectView();
        this.SuspendLayout();

        this.projectView1.SomeComponent1 = null;
        this.projectView1.SomeComponent2 = null;
        ...
        project1.SomeProperty1 = null;
        project1.SomeProperty2 = null;
        ...
        this.Controls.Add(this.projectView1);

        this.ResumeLayout(false);

        }

    private ProjectView projectView1;
}

在Controller中，我有以下代码：

 WorkItem.State["CurrentProject"] = project; // Project to display
 string key = System.String.Concat("ProjectViewForm", project.Id);
 ProjectViewForm projectViewForm = WorkItem.Items.Get<ProjectViewForm>(key);  // calls ProjectViewForm constructor
 if (projectViewForm == null)
 {
     projectViewForm = WorkItem.Items.AddNew<ProjectViewForm>(key);
 }
 else
 {
     projectViewForm.Focus();
 }

 projectViewForm.Enter += ProjectViewForm_Enter;
 projectViewForm.Leave += ProjectViewForm_Leave;

 string formTitle = System.String.Concat (project.Name, " - Status: ", project.ProjectStatusType.Text);
 var info = new Microsoft.Practices.CompositeUI.WinForms.WindowSmartPartInfo();
 info.Location = System.Windows.Forms.Cursor.Position;
 ... yadda yadda yadda ...
 projectViewForm.Dock = System.Windows.Forms.DockStyle.Fill;

WorkItem.Workspaces[Infrastructure.Interface.Constants.WorkspaceNames.WindowsWorkspace].Show (projectViewForm, info);