// Group all the background methods in one place were it's easier to find
#region BackGroundRegion
public void bgw_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
// we cast the sender as being the thing that invokes this method as being a background worker
BackgroundWorker bw = sender as BackgroundWorker;
// used to extract the name of the sort engine name from the argument e.Argument
string SortEngineName = (string)e.Argument;
Type type = Type.GetType("SortingAlgorithmVisualizer." + SortEngineName);
var constructor = type.GetConstructors();
try
{
ISortEngine se = (ISortEngine)constructor[0].Invoke(new object[] { unsortedArray, graphicsPanel, Graphics.Height });
// while the sorting process has not been finished or cancelled we will execute the NextStep method to keep going
while (!se.isSorted() && (!executionThread.CancellationPending))
{
se.NextStep();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public void bgw_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e) //two arguments to event handler, what raised the event, and a block of arguments
{
BackgroundWorker bw = sender as BackgroundWorker; //explicitly identify sender as background worker
string sortEngineName = (string)e.Argument; //now we know the name of the sort engine we would like to run
Type type = Type.GetType("sortingAlgorithmVisualizer." + sortEngineName); //identifying of the class that we are going to create
var ctors = type.GetConstructors(); //get the constructors of that type in our sorting engines
//try-catch block in case something goes wrong
try
{
ISortEngine se = (ISortEngine)ctors[0].Invoke(new object[] { theArray, g, panel1.Height }); //create a sort engine of the type identified and invoke its contructor
/* We are creating a sort engine. We are invoking the first constructor in the list (there should only be one).
* Pass to the constructor the list of the three parameters that we need. */
while (!se.isSorted() && (!bgw.CancellationPending))
{
se.nextStep();
}
}
catch (Exception ex)
{
}
}