private void bCompare_Click(object sender, RoutedEventArgs e)
{
//load directory content
WindowsFileSystem fileSystem = new WindowsFileSystem();
IEnumerable <IDirectoryViewItem> leftItems = fileSystem.GetDirectoryContent(LeftDir);
List <IDirectoryViewItem> rightItems = fileSystem.GetDirectoryContent(RightDir).ToList();//list need for remove functionality
comparisonResult = new List <DirectoryComparison>();
IDirectoryViewItem rightItem;
foreach (IDirectoryViewItem item in leftItems)
{
if (item == null || item.IsMoveUp)
{
continue;
}
rightItem = rightItems.SingleOrDefault(dvi => dvi != null && dvi.Name == item.Name);//right item that matches left name
if (rightItem != null)
{
if (item.IsDirectory)
{
comparisonResult.Add(new DirectoryComparison(item, rightItem, DirectoryComparisonResult.Equal));
}
else if (item.LastModifiedTime > rightItem.LastModifiedTime)
{
comparisonResult.Add(new DirectoryComparison(item, rightItem, DirectoryComparisonResult.LeftNewer));
}
else if (item.LastModifiedTime < rightItem.LastModifiedTime)
{
comparisonResult.Add(new DirectoryComparison(item, rightItem, DirectoryComparisonResult.RightNewer));
}
else
{
comparisonResult.Add(new DirectoryComparison(item, rightItem, DirectoryComparisonResult.Equal));
}
rightItems.Remove(rightItem);//no need in futher comparison
}
else
{
comparisonResult.Add(new DirectoryComparison(item, null, DirectoryComparisonResult.LeftNewer));
}
}
//every item from right collection don't exist in left
foreach (IDirectoryViewItem item in rightItems)
{
if (item == null || item.IsMoveUp)
{
continue;
}
comparisonResult.Add(new DirectoryComparison(null, item, DirectoryComparisonResult.RightNewer));
}
lvCompare.ItemsSource = comparisonResult;
}