/// <summary>
/// Saves data to a file.
/// </summary>
/// <param name="fileName">Name of the file to write to</param>
/// <param name="data">The data to save</param>
public static async Task WriteToDataFileAsync(string directoryName, string fileName, T data)
{
try
{
string output = JsonConvert.SerializeObject(data);
await StorageUtility.WriteToDataFileAsync(directoryName, fileName, output);
}
catch
{
// Add desired error handling for your application
// ApplicationState.ErrorLog.Add(new ErrorLog("SaveToFile", e.Message));
}
}
/// <summary>
/// 將物件資料寫入到檔案中
/// </summary>
public virtual async Task WriteToFileAsync()
{
string data = "";
if (PersistentStorage == PersistentStorage.Single)
{
data = JsonConvert.SerializeObject(this.SingleItem);
}
else
{
data = JsonConvert.SerializeObject(this.Items);
}
await StorageUtility.WriteToDataFileAsync(this.現在資料夾名稱, this.資料檔案名稱, data);
}
/// <summary>
/// Loads data from a file
/// </summary>
/// <param name="fileName">Name of the file to read.</param>
/// <returns>Data object</returns>
public static async Task <T> ReadFromFileAsync(string directoryName, string fileName)
{
//T loadedFile = default(T);
T loadedFile = (T)Activator.CreateInstance(typeof(T));
string tempStr = "";
try
{
tempStr = await StorageUtility.ReadFromDataFileAsync(directoryName, fileName);
loadedFile = JsonConvert.DeserializeObject <T>(tempStr);
}
catch
{
//ApplicationState.ErrorLog.Add(new ErrorLog("LoadFromFile", e.Message));
}
return(loadedFile);
}
/// <summary>
/// 將物件資料從檔案中讀取出來
/// </summary>
public virtual async Task ReadFromFileAsync()
{
if (PersistentStorage == PersistentStorage.Single)
{
SingleItem = (T)Activator.CreateInstance(typeof(T));
}
else
{
Items = (List <T>)Activator.CreateInstance(typeof(List <T>));
}
string data = await StorageUtility.ReadFromDataFileAsync(this.現在資料夾名稱, this.資料檔案名稱);
if (string.IsNullOrEmpty(data) == true)
{
}
else
{
try
{
if (PersistentStorage == PersistentStorage.Single)
{
this.SingleItem = JsonConvert.DeserializeObject <T>(data, new JsonSerializerSettings {
MetadataPropertyHandling = MetadataPropertyHandling.Ignore
});
}
else
{
this.Items = JsonConvert.DeserializeObject <List <T> >(data, new JsonSerializerSettings {
MetadataPropertyHandling = MetadataPropertyHandling.Ignore
});
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}