/// <summary>
/// Save data to file
/// </summary>
/// <param name="attempts">Number of attempts</param>
/// <returns>True, if save was succesful</returns>
public async Task <bool> SaveDataAsync(int attempts = 0)
{
try
{
var serializer = new XmlSerializer(typeof(UpdateHistoryFile));
var version = Package.Current.Id.Version;
Version packageVersion = new Version(version.Major, version.Minor, version.Build, version.Revision);
using (Stream xmlStream = await ApplicationData.Current.LocalFolder.OpenStreamForWriteAsync(FileName, CreationCollisionOption.ReplaceExisting))
{
serializer.Serialize(xmlStream, new UpdateHistoryFile()
{
UpdateList = this.UpdateList, LastVersion = packageVersion.ToString()
});
}
return(true);
}
// When file is unavailable
catch (Exception e) when(e.Message.Contains("is in use") && (attempts < 10))
{
await LogService.AddLogMessageAsync("File is in use\n\n" + e.Message);
return(await SaveDataAsync(attempts + 1));
}
catch (Exception e)
{
throw new Exceptions.Exception("Unhandled exception", e);
}
}
/// <summary>
/// Save data to file
/// </summary>
/// <param name="data">Data to save</param>
/// <param name="fileName">File name</param>
/// <param name="path">Path to file</param>
/// <param name="attempts">Number of attempts</param>
/// <returns>True, if save was succesful</returns>
public static async Task <bool> SaveDataAsync(T data, string fileName, string path, int attempts = 0)
{
Stream xmlStream = null;
try
{
var serializer = new XmlSerializer(typeof(T));
xmlStream = await ApplicationData.Current.LocalFolder.OpenStreamForWriteAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (xmlStream)
{
serializer.Serialize(xmlStream, data);
}
return(true);
}
// When file is unavailable
catch (Exception s) when((s.Message.Contains("denied") || s.Message.Contains("is in use")) && (attempts <= 10))
{
return(await SaveDataAsync(data, fileName, path, attempts + 1));
}
catch (Exception e)
{
await LogService.AddLogMessageAsync(e.Message);
}
finally
{
xmlStream?.Close();
}
return(false);
}
/// <summary>
/// Read data from file
/// </summary>
/// <param name="attempts">Number of attempts</param>
/// <returns>Collection of items of type T</returns>
public async Task ReadDataAsync(int attempts = 0)
{
try
{
XmlSerializer Serializ = new XmlSerializer(typeof(UpdateHistoryFile));
object readedObjects = null;
if ((await ApplicationData.Current.LocalFolder.GetFilesAsync()).FirstOrDefault(x => x.Name == FileName) != null)
{
using (var xmlStream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(FileName))
readedObjects = (UpdateHistoryFile)Serializ.Deserialize(xmlStream);
}
if (readedObjects != null)
{
LastVersion = new Version(((UpdateHistoryFile)readedObjects).LastVersion);
UpdateList = ((UpdateHistoryFile)readedObjects).UpdateList;
}
else
{
LastVersion = new Version(0, 0, 0, 0);
UpdateList = new List <UpdateItem>();
}
}
// When is file unavailable - 10 attempts is enough
catch (Exception e) when(e.Message.Contains("is in use") && attempts < 10)
{
await LogService.AddLogMessageAsync("File is in use\n\n" + e.Message);
await ReadDataAsync(attempts + 1);
}
catch (Exception e)
{
throw new Exceptions.Exception("Unhandled exception", e);
}
finally
{
LastVersion = new Version(0, 0, 0, 0);
UpdateList = new List <UpdateItem>();
}
}
/// <summary>
/// Read data from file
/// </summary>
/// <param name="fileName">File name</param>
/// <param name="path">Path to file</param>
/// <param name="attempts">Number of attempts</param>
/// <returns>Collection of items of type T</returns>
public static async Task <T> ReadDataAsync(string fileName, string path, int attempts = 0)
{
T readedObjects = default(T);
Stream xmlStream = null;
try
{
XmlSerializer serializ = new XmlSerializer(typeof(T));
xmlStream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(fileName);
using (xmlStream)
{
readedObjects = (T)serializ.Deserialize(xmlStream);
}
if (readedObjects != null)
{
return(readedObjects);
}
else
{
return(default(T));
}
}
// When is file unavailable - 10 attempts is enough
catch (Exception s) when((s.Message.Contains("denied")) && (attempts < 10))
{
return(await ReadDataAsync(fileName, path, attempts + 1));
}
catch (Exception e)
{
await LogService.AddLogMessageAsync(e.Message);
}
finally
{
xmlStream?.Close();
}
return(default(T));
}
// Insp
protected async Task GenerateTimelineActivityAsync()
{
try
{
//Get the default UserActivityChannel and query it for our UserActivity. If the activity doesn't exist, one is created.
UserActivityChannel channel = UserActivityChannel.GetDefault();
UserActivity userActivity = await channel.GetOrCreateUserActivityAsync("MainPage");
//Populate required properties
userActivity.VisualElements.DisplayText = "Hello Activities";
userActivity.ActivationUri = new Uri("thedailynotes://page2?action=edit");
//Save
await userActivity.SaveAsync(); //save the new metadata
//Dispose of any current UserActivitySession, and create a new one.
currentActivity?.Dispose();
currentActivity = userActivity.CreateSession();
}
catch (Exception e)
{
await LogService.AddLogMessageAsync(e.Message);
}
}
