зеркало из https://github.com/DeGsoft/maui-linux.git
65 строки
2.1 KiB
C#
65 строки
2.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.IO.IsolatedStorage;
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using System.Linq;
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using System.Runtime.Serialization;
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using System.Text;
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using System.Threading.Tasks;
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using Xamarin.Forms.Internals;
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namespace Xamarin.Forms.Platform.WPF
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{
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internal sealed class Deserializer : IDeserializer
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{
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const string PropertyStoreFile = "PropertyStore.forms";
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public Task<IDictionary<string, object>> DeserializePropertiesAsync()
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{
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IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null);
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if (!isoStore.FileExists(PropertyStoreFile))
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return Task.FromResult<IDictionary<string, object>>(new Dictionary<string, object>(4));
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using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(PropertyStoreFile, FileMode.Open, isoStore))
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{
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if (stream.Length == 0)
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return Task.FromResult<IDictionary<string, object>>(new Dictionary<string, object>(4));
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try
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{
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var serializer = new DataContractSerializer(typeof(IDictionary<string, object>));
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return Task.FromResult((IDictionary<string, object>)serializer.ReadObject(stream));
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}
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catch (Exception e)
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{
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Debug.WriteLine("Could not deserialize properties: " + e.Message);
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Log.Warning("Xamarin.Forms PropertyStore", $"Exception while reading Application properties: {e}");
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}
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return Task.FromResult<IDictionary<string, object>>(null);
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}
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}
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public async Task SerializePropertiesAsync(IDictionary<string, object> properties)
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{
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try
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{
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IsolatedStorageFile isoStore = IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null);
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using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(PropertyStoreFile, FileMode.Create, isoStore))
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{
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var serializer = new DataContractSerializer(typeof(IDictionary<string, object>));
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serializer.WriteObject(stream, properties);
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await stream.FlushAsync();
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}
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}
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catch (Exception e)
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{
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Debug.WriteLine("Could not move new serialized property file over old: " + e.Message);
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}
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}
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}
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}
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