public void Redo()
{
if (redoStack.Count>0)
{
PropertyValue pVal = (PropertyValue)redoStack.Pop();
Type compType = objParent.GetType();
PropertyInfo pinfo = compType.GetProperty(pVal.PropertyName);
//first get the existing value and push to undo stack
object oldVal = pinfo.GetValue(objParent,null);
PropertyValue pUndo = new PropertyValue(pVal.PropertyName, oldVal);
undoStack.Push(pUndo);
// apply the value that was popped off the redo stack
pinfo.SetValue(objParent,pVal.Value, null);
}
}
/// <summary>
/// This method would be called by the parent class
/// in order to store the value of a property prior
/// to it being changed
/// </summary>
/// <param name="propName">Name of the property</param>
/// <param name="propVal">The value prior to change</param>
public void Store (string propName, object propVal)
{
PropertyValue pVal = new PropertyValue(propName, propVal);
undoStack.Push(pVal);
}