|
public GetItemAsync ( [ name ) : IAsyncOperation |
||
| name | [ | |
| return | IAsyncOperation |
|
/// <summary>
/// It checks if the specified folder exists.
/// </summary>
/// <param name="storageFolder">The container folder</param>
/// <param name="subFolderName">The sub folder name</param>
/// <returns></returns>
private static async Task<bool> IfFolderExistsAsync(StorageFolder storageFolder, string subFolderName) {
try {
IStorageItem item = await storageFolder.GetItemAsync(subFolderName);
return (item != null);
}
catch {
// Should never get here
return false;
}
}
public static async Task <T> DeserializeAsync <T>(Windows.Storage.StorageFolder folder, string fileName, System.Threading.SemaphoreSlim semaphore) where T : class
{
try
{
return(await DeserializeAsync <T>((await folder.GetItemAsync(fileName)) as Windows.Storage.StorageFile, semaphore));
}
catch
{
return(null);
}
}
private async Task avatarpaint()
{
if ((string)localSettings.Containers[username.Text].Values["avatar"] != "null") //判断是否有头像,有则填充头像图像
{
imgpath = localSettings.Containers[username.Text].Values["avatar"].ToString();
ImageBrush brush = new ImageBrush();
BitmapImage bitmap = new BitmapImage();
Windows.Storage.StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
Windows.Storage.StorageFile sf = (StorageFile)await storageFolder.GetItemAsync(imgpath);
using (var stream = await sf.OpenAsync(FileAccessMode.ReadWrite))
{
bitmap.SetSource(stream);
}
brush.ImageSource = bitmap;
Avator.Fill = brush;
}
}
private void deleteFile(StorageFolder store, string f) //or Folder
{
try {
if (f.Length == 0 || (f.Length == 1 && f[0] == '\\'))
return; //root folder
var item = store.GetItemAsync(f).AsTask().ConfigureAwait(false).GetAwaiter().GetResult();
item.DeleteAsync().AsTask().ConfigureAwait(false).GetAwaiter().GetResult();
}
catch (System.Exception err) {
//ignore file deletion errors
err.ToJavaException().printStackTrace();
}
}
