//跳转到页面触发
public override async Task OnNavigatedToAsync(object parameter, NavigationMode mode, IDictionary <string, object> suspensionState)
{
//对象实例化
var result = InitAsync();
//加载数据库数据
var log = await LoadDbLogAsync();
var site = await LoadDbSiteAsync();
var selectResult = await ChartDao.SelectSitesAsync(site);
Infos.Sites = selectResult.Item2;
Infos.Logs = log;
Infos.SelectSites = selectResult.Item1;
//计算图表数据
var getResult = await Task.Run(() => ChartDao.CacuChartAsync(Infos.Sites, Infos.Logs));
Chart1Collection = getResult.Item1;
Infos.BarChart = getResult.Item2;
Lengend = await ChartDao.ChartLengendAsync(Infos.Sites);
//默认显示全部
Type = "All";
//图表加载完毕后切换加载状态
Infos.State3 = Visibility.Collapsed;
Infos.State1 = Visibility.Visible;
}
/// <summary>
/// 计算图表相关数据
/// </summary>
/// <param name="sites">数据库站点</param>
/// <param name="logs">站点日志</param>
/// <returns></returns>
public async Task <bool> ChartAsync(List <SiteModel> sites, List <LogModel> logs)
{
var getResult = await Task.Run(() => ChartDao.CacuChartAsync(sites, logs));
Chart1Collection = getResult.Item1;
Infos.BarChart = getResult.Item2;
Lengend = await ChartDao.ChartLengendAsync(sites);
return(true);
}
/// <summary>
/// 确定站点并切换页面
/// </summary>
public async Task <bool> AcceptClickAsync()
{
//清空数据，重新统计
Infos.Sites.Clear();
Lengend.Clear();
Chart1Collection.Clear();
Infos.BarChart.Clear();
foreach (var item in Infos.SelectSites.Where(i => i.IsSelected == true).Select(i => i.Site))
{
//获取选择的站点
Infos.Sites.Add(item);
}
//选择站点数量大于上限进行提示
if (Infos.Sites.Count > MAX_NUMBER_OF_SITE)
{
var msgDialog = new Windows.UI.Popups.MessageDialog("站点最多选择五个！！")
{
Title = "错误提示"
};
await msgDialog.ShowAsync();
return(false);
}
else
{
Infos.State1 = Visibility.Visible;
Infos.State2 = Visibility.Collapsed;
//重新统计数据
var getResult = await Task.Run(() => ChartDao.CacuChartAsync(Infos.Sites, Infos.Logs));
Chart1Collection = getResult.Item1;
Infos.BarChart = getResult.Item2;
Lengend = await ChartDao.ChartLengendAsync(Infos.Sites);
//统计完成后触发此方法，计算前台需要显示的数据
TypeChanged(Type);
return(true);
}
}