我正在从ObservableCollection中添加和删除，但是网格未更新

如何解决我正在从ObservableCollection中添加和删除，但是网格未更新

|| 我正在使用此代码更新我的网格。它不起作用。网格未更新。我找不到任何代码问题。这是一个帮助台应用程序。我正在尝试使用客户端的网格更新服务器上的已关闭票证。救命 ！

public class DAL_LOADTICKETS
{
    private static string URL =\"http://helpdesk.hujelabs.com/user.php/\"+Login.user_id+\"/query/\";
    public static void/*ObservableCollection<cTicket>*/ LoadOPENTICKETS()
    {
        // Execute the query using the LINQ to XML

        var tickets = from c in XElement.Load(URL).Elements(\"query\") select c;
        foreach (var ticks in tickets)
        {
            cTicket lTicket = new cTicket
            {
                TicketID = ticks.Element(\"query_id\").Value,TicketStatus = ticks.Element(\"status\").Value,TicketSubject = ticks.Element(\"subject\").Value,TicketDescription = ticks.Element(\"description\").Value,TicketTags = ticks.Element(\"tag\").Value,TimeStamp = ticks.Element(\"timestamp\").Value,};
            if (ticks.Element(\"status\").Value == \"open\")
            {
                if (!Window1.OpenTicketsList.Contains(lTicket))
                {
                    Window1.OpenTicketsList.Add(lTicket);
                }
            }

            else if (ticks.Element(\"status\").Value == \"closed\")
            {
                if (Window1.OpenTicketsList.Contains(lTicket))
                {
                    Console.WriteLine(\"VISITED BUT NOT DELETED\");

                    Window1.OpenTicketsList.Remove(lTicket);
                }
            }

        }

    }

<Grid Width=\"756\" Background=\"White\">
                    <ListView Name=\"OpenReqList\" HorizontalAlignment=\"Stretch\" VerticalAlignment=\"Top\" ItemsSource=\"{Binding TicketCollection}\" Width=\"750\" PreviewMouseDoubleClick=\"OpenReqList_PreviewMouseDoubleClick\" IsSynchronizedWithCurrentItem=\"True\">
        <ListView.View>
            <GridView >
                <GridView.Columns>
                    <GridViewColumn Width=\"100\" Header=\"Ticket ID\" DisplayMemberBinding=\"{Binding TicketID}\"/>
                    <GridViewColumn Width=\"250\" Header=\"Ticket Subject\" DisplayMemberBinding=\"{Binding Path=TicketSubject}\"/>
                    <GridViewColumn Width=\"190\" Header=\"Ticket Send Time\" DisplayMemberBinding=\"{Binding Path=TimeStamp}\"/>
                    <GridViewColumn Width=\"190\" Header=\"Ticket Status\" DisplayMemberBinding=\"{Binding Path=TicketStatus}\"/>
                </GridView.Columns>
            </GridView>
        </ListView.View>
    </ListView>
</Grid>

public class cTicket
    {
        public string TicketID { get; set; }
        public string TicketStatus { get; set; }
        public string TicketSubject { get; set; }
        public string TicketDescription { get; set; }
        public string TicketTags { get; set; }
        public string TicketDiscussionID { get; set; }
        public string ResponseAdmin { get; set; }
        public string ResponseClient { get; set; }
        public string TimeStamp { get; set; }
    }

    

解决方法

        看来您的代码正在构造一个新的票证，并试图将其从ObservableCollection中删除。尝试找到您收藏中已存在的票证，然后将其删除。或者，您可能需要在Ticket类上覆盖Equals，以便ObservableCollection知道新的Ticket与旧的Ticket相等。