public MainWindow()
{
InitializeComponent();
ListMessages.ItemsSource = mes;
Task.Run(() =>
{
while (true)
{
for (int i = 0; i < 50; i++)
{
Thread.Sleep(10);
this.Dispatcher.Invoke(() =>
{
bar.Value++;
});
}
this.Dispatcher.Invoke(() =>
{
bar.Value = 0;
});
using (ChatEntities db = new ChatEntities())
{
var a = db.Messages.ToList();
this.Dispatcher.Invoke(() =>
{
mes.Clear();
foreach (var item in a)
{
mes.Add($"{item.Date}: {item.Text}");
}
});
}
}
});
//using (ChatEntities db = new ChatEntities())
//{
// var a = db.Messages.ToList();
// foreach(var item in a)
// {
// mes.Add($"{item.Date}: {item.Text}");
// }
//}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
Message m = new Message()
{
Text = MyText.Text, Date = DateTime.Now
};
mes.Add($"{m.Date}: {m.Text}");
using (ChatEntities db = new ChatEntities())
{
db.Messages.Add(m);
db.SaveChanges();
}
}
protected void Page_PreRender(object sender, EventArgs e)
{
var dbContext = new ChatEntities();
int messagesCount = dbContext.Messages.Count();
IQueryable <Message> messages = null;
if (messagesCount > 15)
{
messages = dbContext.Messages.Include("User")
.OrderBy(msg => msg.PostDate).Skip(messagesCount - 15).Take(15);
}
else
{
messages = dbContext.Messages.Include("User");
}
this.ListViewMessages.DataSource = messages.ToList();
this.ListViewMessages.DataBind();
}
protected void OnBtnSendMessage_Click(object sender, EventArgs e)
{
var dbContext = new ChatEntities();
var currentUser = dbContext.Users.FirstOrDefault(
u => u.UserName == User.Identity.Name);
if (currentUser != null)
{
Message newMessage = new Message()
{
Text = this.TextBoxNewMessageText.Text,
User = currentUser,
PostDate = DateTime.Now
};
dbContext.Messages.Add(newMessage);
dbContext.SaveChanges();
this.TextBoxNewMessageText.Text = "";
}
}
