/// <summary>
/// 將物件資料寫入到檔案中
/// </summary>
public virtual async Task WriteToFileAsync()
{
string data = "";
if (IsCollectionType == false)
{
data = JsonConvert.SerializeObject(this.SingleItem);
}
else
{
data = JsonConvert.SerializeObject(this.Items);
}
await StorageUtility.WriteToDataFileAsync(this.CurrentFolderName, this.DataFileName, data);
}
/// <summary>
/// 將物件資料從檔案中讀取出來
/// </summary>
public virtual async Task ReadFromFileAsync()
{
#region 先將建立該資料模型的物件，避免檔案讀取不出來之後， Items / SingleItem 的物件值為 null
if (IsCollectionType == false)
{
SingleItem = (T)Activator.CreateInstance(typeof(T));
}
else
{
Items = (List <T>)Activator.CreateInstance(typeof(List <T>));
}
#endregion
string data = await StorageUtility.ReadFromDataFileAsync(this.CurrentFolderName, this.DataFileName);
if (string.IsNullOrEmpty(data) == true)
{
}
else
{
try
{
if (IsCollectionType == false)
{
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)
{
Debug.WriteLine(ex.Message);
}
}
}
