/// <summary>
/// Call this static method to start a time-consuming operation that DOES NOT involve user interface (the operation may NOT access form controls).
/// For example, you may call this method to execute an entity adapter method that takes several seconds to complete.
/// The user is notified through "Please wait..." window.
/// </summary>
public static void StartNonUIOperation(LongOperationEventHandler operation)
{
LongOperation dlg = new LongOperation(null, operation);
dlg.ShowDialog();
if (dlg.longOperationException != null)
{
throw new Exception(null, dlg.longOperationException);
}
}
/// <summary>
/// Call this static method to start a time-consuming operation involving user interface (the operation may access form controls). The user is notified through "Please wait..." window.
/// </summary>
public static void StartUIOperation(Control parent, LongOperationEventHandler operation)
{
LongOperation dlg = new LongOperation(parent, operation);
dlg.ShowDialog();
if (dlg.longOperationException != null)
{
throw dlg.longOperationException;
}
}
/// <summary>
/// Call this static method to start a time-consuming operation.
/// The user is notified through a hourglass icon.
/// </summary>
public static void StartUIOperationWithHourglass(Control ctrl, LongOperationEventHandler operation)
{
Cursor oldCursor = ctrl.Cursor;
ctrl.Cursor = Cursors.WaitCursor;
try
{
operation();
}
finally
{
ctrl.Cursor = oldCursor;
}
}
public LongOperation(Control parent, LongOperationEventHandler operation)
{
InitializeComponent();
this.operation = operation;
this.parent = parent;
}
