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C# IReadOnlyList Items laden

 

Wie kann man manuell Items in eine IReadOnlyList laden

 

Lösung

Man kann die Elemente einer IReadOnlyListe in eine ObservableList  mit .Add(Element) laden

Die ObservableList oder IEnumerable List kann man mit OrderBy sortieren.

 

//< get Files sorted >

ObservableCollection<StorageFile> fileList = new ObservableCollection<StorageFile>();

           

IReadOnlyList<StorageFile> files = null;

files = await folder.GetFilesAsync();

 

foreach (StorageFile file in files)

{

   fileList.Add(file);

}

fileList.OrderByDescending((x) => x.DisplayName);

 

 

Code Beispiel C#

IReadOnly List, ObservableCollection, sortieren

 

        public async void fpReadFiles_CameraFolder(StorageFolder folder)

        {

            //------------< fxReadFiles_inFolder()------------

            ctlFiles.Items.Clear();

            //< check >

            if (folder == null) return;

            //</ check >

 

            //< get Files sorted >

            ObservableCollection<StorageFile> fileList = new ObservableCollection<StorageFile>();

            if (IsAndroid == true)

            {

                IReadOnlyList<StorageFile> files = null;

                files = await folder.GetFilesAsync();

 

                foreach (StorageFile file in files)

                {

                    fileList.Add(file);

                }

            }

            else

            {

                foreach (StorageFolder appleFolder in await folder.GetFoldersAsync())

                {

                    if (appleFolder.Name.Contains("APPLE"))

                    {

                        IReadOnlyList<StorageFile> files = null;

                        files = await appleFolder.GetFilesAsync();

 

                        foreach (StorageFile file in files)

                        {

                            fileList.Add(file);

                        }

                        

                    }

                }               

            }

            //*order List

            fileList.OrderByDescending((x) => x.DisplayName);

            //IEnumerable<StorageFile> sortedFiles = files.OrderByDescending((x) => x.DisplayName);

            //</ get Files sorted >

 

            fpLoadItems_in_Drive(fileList);

            //------------</ fxReadFiles_inFolder()------------

        }

 

 

Überleitung Sortieren einer Readable Liste

IReadOnlyList<StorageFile> files = await folder.GetFilesAsync();

                IEnumerable<StorageFile> sortedFiles = files.OrderByDescending((x) => x.DisplayName);

 

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