SharePoint 2010 ExecuteQueryAsync - ClientRequestFailed

Question

namespace SPSilverlightExample
{
    //************************************************
    public class Project
    {
        public string Title { get; set; }
        public DateTime DueDate { get; set; }
        public string Description { get; set; }
        public DateTime EndDate { get; set; }
    }
    //************************************************
    public partial class MainPage : UserControl
    {
        private ListItemCollection _projects;

        public MainPage()
        {
            InitializeComponent();
            //************************************************
            ClientContext context = new ClientContext(ApplicationContext.Current.Url);
            context.Load(context.Web);
            List Projects = context.Web.Lists.GetByTitle("Projects");
            context.Load(Projects);

            CamlQuery query = new Microsoft.SharePoint.Client.CamlQuery();
            string camlQueryXml =   "<View><Query><Where>" +
                                    "<And><And>" +
                                    
                                    "<Gt>" +
                                    "<FieldRef Name='DueDate' IncludeTimeValue=\"TRUE\" />" +
                                    "<Value Type='DateTime'>2000-01-01T00:00:00Z</Value>" + 
                                    "</Gt>" +
                                    
                                    "<Lt>" +
                                    "<FieldRef Name='EndDate' IncludeTimeValue=\"TRUE\" />" + //"Lt" = Lower Than
                                    "<Value Type='DateTime'>2012-10-20T00:00:00Z</Value>" +
                                    "</Lt>" +
                                    
                                    "</And>" +

                                    "<Eq>"+
                                    "<FieldRef Name='Custom_x0020_Column' />" +
                                    "<Value Type='Text'>Room1</Value>" +
                                    "</Eq>"+

                                    "</And>" +
                                    "</Where></Query>"+
                                    
                                    "<ViewFields>" + //Felder anzeigen = Titel; DueDate; Description; EndDate
                                    "<FieldRef Name=\"Title\" /><FieldRef Name=\"EndDate\" />" +
                                    "<FieldRef Name=\"Description\" /><FieldRef Name=\"DueDate\" />" +
                                    "</ViewFields></View>";

            query.ViewXml = camlQueryXml;
            _projects = Projects.GetItems(query);
            
            context.Load(_projects);
            context.ExecuteQueryAsync(new ClientRequestSucceededEventHandler(OnRequestSucceeded), null);
            //************************************************
        }
        //************************************************
        private void OnRequestSucceeded(Object sender, ClientRequestSucceededEventArgs args)
        {
            // This is not called on the UI thread.
            Dispatcher.BeginInvoke(BindData);
        }
        //************************************************
        private void BindData()
        {
            int i = 0;
            List<Project> projects = new List<Project>();
            foreach (ListItem li in _projects)
            {
                projects.Add(new Project()  
                {
                    Title = li["Title"].ToString(),
                    DueDate = Convert.ToDateTime(li["DueDate"].ToString()),
                    Description = li["Description"].ToString(),
                    EndDate = Convert.ToDateTime(li["EndDate"].ToString())
                });
                i++;
                //int i = Convert.ToInt32(_projects.Count());
            }
            MessageBox.Show(i.ToString(), "EXIT", MessageBoxButton.OK);

            //dataGrid1.ItemsSource = projects; //Muss im User Interface enthalten sein - am Anfang hinzufügen
        }
        //************************************************
    } //Main-Class END

}

Hello @All,

I have a question to my code above: This is a Silverlight WebPart that runs on Share Point 2010 and on my local machine this code works fine. But when I try to run it on a MS Server 2008 R2 the function:

 

context.ExecuteQueryAsync(new ClientRequestSucceededEventHandler(OnRequestSucceeded), null);

 

Doesn't work. It goes to the NULL-Tree and doesn't do anything.

What can be the reason? Maybe a security problem?

//EDIT: Sorry for double-posting: http://social.msdn.microsoft.com/Forums/en-US/sharepointdevelopment/thread/ac15ea42-a054-443d-a8fb-1300caaeec05

 

Kind regards,

ms

Answer 1

The issue appears to have been resolved on the double-post.