CAL - Unit Testing - Cross Thread Event Invocation

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.NET3.5

C#

Windows

.NET

C#4.0

, +

Hi,
I am Using Composite Application Library for My Windows Application Development
and i am Facing problem in Unit Testing
This is what going on
1.I am inheriting the Bootstrapper and running it from by test class and then i will have the Container available to me and now i resolve the required object to test
2. i will test each functionality like initiating the command assigning values to properties etc
the problem occurs in 2
the problem is on assigning value to the property i am calling RaiseCanExecuteChanged() in Delegate Command
it is throwing error as "The calling thread cannot access this object because a different thread owns it."
how do i resolve this issue??
sample code From my Testing Class

[TestFixtureSetUp]
[RequiresSTA]
public void TestSetup()
{
_thread = new Thread(new ThreadStart(() =>
{
_application = new MockApplication();
//System.Windows.Application.
_application.Run(true);
}));
_thread.SetApartmentState(ApartmentState.STA);
_thread.Start();
_thread.Join(100000);
model = _application.Container.Resolve(typeof(NewCaseViewModel)) as NewCaseViewModel;
}
[Test]
public void TestSearchFunctionality()
{
Assert.True(model != null);
if (model != null)
{
model.MemberToSearch = "raghu";
if (model.SearchCommand.CanExecute(""))
{
model.SearchCommand.Execute("");
}
Assert.True(model.SearchedMembers != null);
}
}
}
here is my code here the nunit framework is calling the test method and i cant make the _thread Execute the line <code>model.MemberToSearch = "raghu";</code>


this is the code written in the Setter of the MemberToSearch Property

<pre lang="cs">
                _memberToSearch = value;
                OnPropertyChanged("MemberToSearch");
                ((DelegateCommand)_searchCommand).RaiseCanExecuteChanged();

Regards
Raghunandan