/// <summary>
/// 删除指定的项目并在删除前要求用户确认。
/// </summary>
/// <param name="item">要删除的项目</param>
/// <returns>是否已删除项目</returns>
private async Task <bool> DeleteItemAsync(FluentFTP.FtpListItem item)
{
await ftpSemaphore.WaitAsync();
try
{
ContentDialog dialog = new ContentDialog()
{
Content = string.Format("你确定要删除{0}吗？", item.Name),
PrimaryButtonText = "是",
CloseButtonText = "否"
};
var result = await dialog.ShowAsync();
progressBar.Visibility = Visibility.Visible;
progressBar.IsIndeterminate = true;
if (result != ContentDialogResult.Primary)
{
return(false);
}
switch (item.Type)
{
case FluentFTP.FtpFileSystemObjectType.Directory:
await client.SetWorkingDirectoryAsync(Path.GetDirectoryName(item.FullName));
await client.DeleteDirectoryAsync(item.Name);
break;
case FluentFTP.FtpFileSystemObjectType.File:
await client.SetWorkingDirectoryAsync(Path.GetDirectoryName(item.FullName));
await client.DeleteFileAsync(item.Name);
break;
default:
throw new NotImplementedException("不支持删除除文件夹和文件以外的类型");
}
progressBar.Visibility = Visibility.Collapsed;
ContentDialog resultDialog = new ContentDialog()
{
Content = string.Format("已经成功删除{0}。", item.Name),
CloseButtonText = "确定"
};
await resultDialog.ShowAsync();
}
catch (Exception ex)
{
ContentDialog exceptionDialog = new ContentDialog()
{
Content = string.Format("遇到未知错误。错误信息：{0}", ex.Message),
CloseButtonText = "确定"
};
await exceptionDialog.ShowAsync();
}
finally
{
progressBar.Visibility = Visibility.Collapsed;
ftpSemaphore.Release();
}
return(true);
}
