I want to get a thumbnail image of all photo files in a specific folder.
(Example: My C: \ Mypic)
I found another way to get a single thumbnail image, but this isn't exactly what i want
async private Task<BitmapImage> Thumbnail_call()
{
var files = await KnownFolders.PicturesLibrary.GetFilesAsync();
var thumb = await files[0].GetThumbnailAsync(Windows.Storage.FileProperties.ThumbnailMode.PicturesView);
var bitm = new BitmapImage();
bitm.SetSource(thumb);
return bitm;
}
I think that i have to use foreach sentence
Can you give me a solution to this problem?
In UWP app, you can access certain file system locations by default. Apps can also access additional locations through the file or folder picker, or by declaring capabilities. See File access permissions for more details about accessing the folders or files.
After you get the specific folders, you can get all thumbnails in it as the following code.
async private Task<List<BitmapImage>> GetThumbnails(StorageFolder folder)
{
List<BitmapImage> BitmapImageList = new List<BitmapImage>();
var files = await folder.GetFilesAsync();
foreach (var file in files)
{
var thumb = await file.GetThumbnailAsync(Windows.Storage.FileProperties.ThumbnailMode.PicturesView);
var bitmap = new BitmapImage();
bitmap.SetSource(thumb);
BitmapImageList.Add(bitmap);
}
return BitmapImageList;
}
Related
Here is my code........
public MediaPlaybackItem GetMediaPlaybackItemFromPath(string path)
{
//StorageFile file = await StorageFile.GetFileFromPathAsync(path);
var source = MediaSource.CreateFromUri(new Uri(path));
return new MediaPlaybackItem(source);
}
If I use this method I cannot play music. But if I try this I can play music.
public async Task<MediaPlaybackItem> GetMediaPlaybackItemFromPathAsync(string path)
{
StorageFile file = await StorageFile.GetFileFromPathAsync(path);
var source = MediaSource.CreateFromStorageFile(file);
return new MediaPlaybackItem(source);
}
Whats the problem with this? I am using mediaplaybacklist for MediaPlayer.Source . How can I get proper MediaSource using my first method? Help me please.
You could not pass file path parameter to CreateFromUri directly. In general, the Uri parameter is http protocol address such as http://www.testvideo.com/forkvideo/test.mp4. But we could pass the file path with uwp file access uri scheme.
For example:
Media file stored in the installation folder.
ms-appx:///
Local folder.
ms-appdata:///local/
Temporary folder.
ms-appdata:///temp/
For more you could refer this document.
I'm wondering that how to get thumbnails in UWP using C#
I want to get all thumbnail images of image files (gif, jpg etc) in my folder
I read quite codes about getting thumbnails and refered to this and the other samples
But i couldn't fully understand the process with Xaml
Can you please tell me how to get thumbnail from my library folder?
Once you have access to a folder through user selection with a FolderPicker.you can retrieve the thumbnails from the system. You can use the GetScaledImageAsThumbnailAsync() for that.
For instance:
private async Task<BitmapImage> GetThumbnail(StorageFile file)
{
if (file != null)
{
StorageItemThumbnail thumb = await file.GetScaledImageAsThumbnailAsync(ThumbnailMode.VideosView);
if (thumb != null)
{
BitmapImage img = new BitmapImage();
await img.SetSourceAsync(thumb);
return img;
}
}
return null;
}
coding xamarin form project and also using pcl storage. have problem with saving image or file on device all examples i found show how to save stream of byte array into file but non of them show how to turn convert image into usable format for saving.
var webImage = new Image();
webImage.Source = new UriImageSource
{
CachingEnabled = false,
Uri = new Uri("http://server.com/image.jpg"),
};
byte[] image = ????(what i need)????(webImage.Source);
// get hold of the file system
IFolder folder = rootFolder ?? FileSystem.Current.LocalStorage;
// create a file, overwriting any existing file
IFile file = await folder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
// populate the file with image data
using (System.IO.Stream stream = await file.OpenAsync(FileAccess.ReadAndWrite))
{
stream.Write(image, 0, image.Length);
}
In other words looking for code to save image/file on device from url.
Tried ffimageloading since it contain converter to byte[], but always get error:"Object reference not set to an instance of an object." for GetImageAsJpgAsync and GetImageAsPngAsync method. problem might be that image isn't fully loaded. but finish event and finish command never get called even trough image is fully loaded on screen and bound to cachedImage.
var cachedImage = new CachedImage()
{
Source = "https://something.jpg",
FinishCommand = new Command(async () => await TEST()),
};
cachedImage.Finish += CachedImage_Finish;
var image = await cachedImage.GetImageAsJpgAsync();
With FFImageLoading (I noticed you use it):
await ImageService.Instance.LoadUrl("https://something.jpg").AsJpegStream();
If you want to get original file location, use this:
await ImageService.Instance.LoadUrl("https://something.jpg").Success((imageInfo) => { //TODO imageInfo.FilePath } ).DownloadOnly();
I have no problems when I want to create a new folder
I'm working with
Directory.CreateDirectory
Now I'm trying to get all image files from my desktop and I want to move all images to that folder which was created with Directory.CreateDirectory
I've testet file.MoveTo
from here
FileInfo file = new FileInfo(#"C:\Users\User\Desktop\test.txt");
to here
file.MoveTo(#"C:\Users\User\Desktop\folder\test.txt");
This works perfect.
Now I want to do that with all the image files from my dekstop
(Directory.CreateDirectory(#"C:\Users\User\Desktop\Images");)
How could I do that?
Example code of getting images with certain extentions from one root folder:
static void Main(string[] args)
{
// path to desktop
var desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
//get file extentions by speciging the needed extentions
var images = GetFilesByExtensions(new DirectoryInfo(desktopPath) ,".png", ".jpg", ".gif");
// loop thrue the found images and it will copy it to a folder (make sure the folder exists otherwise filenot found exception)
foreach (var image in images)
{
// if you want to move it to another directory without creating a copy use:
image.MoveTo(desktopPath + "\\folder\\" + image.Name);
// if you want to move a copy of the image use this
File.Copy(desktopPath + "\\"+ image.Name, desktopPath + "\\folder\\" + image.Name, true);
}
}
public static IEnumerable<FileInfo> GetFilesByExtensions(DirectoryInfo dir, params string[] extensions)
{
if (extensions == null)
throw new ArgumentNullException("extensions");
var files = dir.EnumerateFiles();
return files.Where(f => extensions.Contains(f.Extension));
}
Please try this:
You can filter files in a specific directory and then looop through search results to move each file, you might be able to modify search pattern to match on a number of different image file formats
var files = Directory.GetFiles("PathToDirectory", "*.jpg");
foreach (var fileFound in files)
{
//Move your files one by one here
FileInfo file = new FileInfo(fileFound);
file.MoveTo(#"C:\Users\User\Desktop\folder\" + file.Name);
}
I am ABLE to take a picture, but I am having trouble saving it to one of the KnownFolders.
Yes, I have declared the Picture Library Access Capability in Package.appxmanifest.
var ui = new CameraCaptureUI();
ui.PhotoSettings.CroppedAspectRatio = new Size(4, 3);
StorageFile file = await ui.CaptureFileAsync(CameraCaptureUIMode.Photo);
if (file != null)
{
var stream = await file.OpenAsync(FileAccessMode.Read);
var bitmap = new BitmapImage();
bitmap.SetSource(stream);
Photo.Source = bitmap;
StorageFolder storageFolder = KnownFolders.PicturesLibrary;
var result = await file.CopyAsync(storageFolder, "tps.jpg");
}
The code stops on the last line. What am I doing wrong?
I think you also need declare the file types!
In the Declarations tab, choose File Type Associations from Available
Declarations and click Add.
Under Properties, set the Name property to image.
In the Supported File Types box, add .jpg as a supported file type by
entering .jpg in the FileType field.