/// <summary>
/// 创建实体到 LocalFolder中
/// 若存在则替换
/// </summary>
/// <typeparam name="T">数据对象</typeparam>
/// <param name="t"></param>
/// <param name="fileName">文件名称</param>
/// <returns></returns>
public static async Task CreatEntity <T>(T t, string fileName)
{
var folder = ApplicationData.Current.LocalFolder;
try
{
StorageFile file = await folder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
using (IRandomAccessStream randomAccessSteam = await file.OpenAsync(FileAccessMode.ReadWrite))
using (IOutputStream outputStream = randomAccessSteam.GetOutputStreamAt(0))
{
await XmlSerializationHelper.XMLSerialize(t, outputStream.AsStreamForWrite());
await outputStream.FlushAsync();
}
}
catch (Exception)
{
throw;
}
}
/// <summary>
/// 从LocalFolder ,出文件保存的对象
/// </summary>
/// <typeparam name="TResult">返回类型</typeparam>
/// <param name="fileName">文件名称</param>
/// <returns></returns>
public static async Task <TResult> GetContent <TResult>(string fileName) where TResult : class, new()
{
StorageFolder folder = ApplicationData.Current.LocalFolder;
try
{
if (await CheckFileExist(folder, fileName))
{
StorageFile file = await folder.GetFileAsync(fileName);
using (IRandomAccessStream randomAccessStream = await file.OpenAsync(FileAccessMode.Read))
using (IInputStream inPutStream = randomAccessStream.GetInputStreamAt(0))
{
return(await XmlSerializationHelper.XMLDeserialize <TResult>(inPutStream.AsStreamForRead()));
}
}
else
{
return(null);
}
}
catch (Exception ex) { throw ex; }
}