I am trying to bind array of structs to the ToolStripCombobox but with no success.
I've tried to use it like in this example but I am getting error when I try to setup a value member.
My code looks like this:
public struct PlayTimeLength
{
public string Description;
public double Seconds;
public PlayTimeLength(string description, double seconds)
{
Description = description;
Seconds = seconds;
}
}
public PlayTimeLength[] PlayTimeLengths = {new PlayTimeLength("1 minuta", 1*60), new PlayTimeLength("3 minuty", 3*60), new PlayTimeLength("5 minut", 5*60)};
And the actual binding code:
cbxTimes.ComboBox.DataSource = PlayTimeLengths;
cbxTimes.ComboBox.DisplayMember = "Description";
cbxTimes.ComboBox.ValueMember = "Seconds"; //<-- exception here
cbxTimes is of type ToolStripCombobox. What am I doing wrong?
Your members should be properties in order to do binding.
private string description;
public string Description
{
get
{
return description;
}
set
{
description = value;
}
}
private double seconds;
public double Seconds
{
get
{
return seconds;
}
set
{
seconds = value;
}
}
Related
angular controller
$http({
method: 'POST',
url: '/Eatery/save',
contentType:'application/json',
dataType:'json',
data:resvnCtrl.user
})
Spring mvc controller
#RequestMapping(value="/save",method=RequestMethod.POST,consumes=MediaType.APPLICATION_JSON_VALUE,produces=MediaType.APPLICATION_JSON_VALUE)
#ResponseBody
public int save(#RequestBody Reservation reservation) {
System.out.println(reservation.getTime());
return reservationRepo.save(reservation);
}
Java model
#Entity
#Table(name="reservations")
public class Reservation implements Serializable{
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
private String cnf;
private String name;
private String email;
private String phone;
#JsonDeserialize(using=CustomJsonDateDeserializer.class)
private LocalDateTime time;
private int seats;
private String note;
public Reservation() { }
public Reservation(String cnf, String name, String email, String phone,
LocalDateTime time, int seats, String note) {
this.cnf = cnf;
this.name = name;
this.email = email;
this.phone = phone;
this.time = time;
this.seats = seats;
this.note = note;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCnf() {
return cnf;
}
public void setCnf(String cnf) {
this.cnf = cnf;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public LocalDateTime getTime() {
return time;
}
public void setTime(LocalDateTime time) {
this.time = time;
}
public int getSeats() {
return seats;
}
public void setSeats(int seats) {
this.seats = seats;
}
public String getNote() {
return note;
}
public void setNote(String note) {
this.note = note;
}
}
From browser console
email: "kerhb#regerg.e"
name: "kjergk"
note: "wefwef"
phone: "1234567899"
seats: 2
time: "10/23/2015 5:53 PM"
Custom date deserializer
public class CustomJsonDateDeserializer extends JsonDeserializer<Date>
{
#Override
public Date deserialize(JsonParser jsonparser,
DeserializationContext deserializationcontext) throws IOException, JsonProcessingException {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm");
String date = jsonparser.getText();
try {
return format.parse(date);
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
}
I have a bootstrap datetimepicker on UI and a java REST webservice at the backend. when i send date select, i got "The request sent by the client was syntactically incorrect.". the datetime string which is sent did not map to the java model. can someone spot my error
#Marged is rigth saying that you didn't cover AM/PM in your date pattern. The proper patter would be yyyy-MM-dd HH:mm a. Note also that you don't need a custom deserializer for this, can rather use #DateTimeFormat
#DateTimeFormat(pattern = "yyyy-MM-dd HH:mm a")
private LocalDateTime time;
How to filter in datastore using objectify for a Date property ?
I have a entity which looks like below pojo class . In this timeStamp is a property which holds the Date value.
public class TravelEntry {
private String deviceId;
private String pushedGeoData;
private String location;
private Date timeStamp;
public TravelEntry(){
setTimeStamp(this.timeStamp);
}
public String getDeviceId() {
return deviceId;
}
public void setDeviceId(String deviceId) {
this.deviceId = deviceId;
}
public String getPushedGeoData() {
return pushedGeoData;
}
public void setPushedGeoData(String pushedGeoData) {
this.pushedGeoData = pushedGeoData;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public Date getTimeStamp() {
return timeStamp;
}
public void setTimeStamp(Date timeStamp) {
if(timeStamp==null){
this.timeStamp = new Date();
}else{
this.timeStamp = timeStamp;
}
}
}
How do I query or filter the Date property using Objectify ?
I want retrieve all entity those are of particular date and time.
It's all spelled out in the documentation:
https://code.google.com/p/objectify-appengine/wiki/Queries
#Index the field and then filter by the desired date value.
I have a puzzled problem of databinding in WPF.
There is a listbox in XAML which it has linked with ItemSource,
but when it runs, it shows the lists of class names.
so I have applied to DisplayMemberPath, but it doesn't helpful.
and also I'm wondering how I can access inside class from generic class.
Thanks.
result
puzzled.Member
puzzled.Member
puzzled.Member
puzzled.Member
<DockPanel>
<ListBox Name="lbxMbrList" DockPanel.Dock="Left" Width="200" Padding="10"></ListBox>
<ContentControl />
</DockPanel>
private void Window_Loaded(object sender, RoutedEventArgs e)
{
members.Add(new Member("superman", "123-1234567", "address1"));
members.Add(new Member("batman", "111-111111", "address2"));
members.Add(new Member("goodman", "222-222222", "address3"));
members.Add(new Member("badman", "333-333333", "address4"));
lbxMbrList.ItemsSource = members;
lbxMbrList.DisplayMemberPath = members.MemberDetails; //<<it won't helpful
//var i = members.member.Name; //<<how can I access inside class?
//if (i == "superman")
//{
// MessageBox.Show("superman");
//}
}
public class Member
{
private string _name;
private string _phone;
private string _address;
public string Name { get { return _name; } set { _name = value; } }
public string Phone { get { return _phone; } set { _phone = value; } }
public string Address { get { return _address; } set { _address = value; } }
public Member() { }
public Member(string name, string phone, string address)
{
_name = name; _phone = phone; _address = address;
}
public string lbxMember
{
get { return string.Format("{0} - {1}", Name, Phone, Address); }
}
}
class MemberList : IEnumerable<Member>
{
private ObservableCollection<Member> memberList = new ObservableCollection<Member>();
public Member this[int i]
{
get {return memberList[i];}
set {memberList[i] = value;}
}
public void Add(Member member)
{
memberList.Add(member);
}
public void Remove(Member member)
{
memberList.Remove(member);
}
public IEnumerator<Member> GetEnumerator()
{
return memberList.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator() { return GetEnumerator(); }
public Member member { get; set; } //<< it think I has misunderstood it
public string MemberDetails
{
get
{ return string.Format("{0} - {1}", member.Name, member.Phone, member.Address); }
}
}
You are assigning the output of your MemberDetails property to the DisplayMemberPath. Instead, you need to assign the name of the property as a string.
lbxMbrList.DisplayMemberPath = "MemberDetails";
For what its worth, this will be easier to work with if you use an ItemTemplate in the ListBox.
[Edit]
Also, as #Blam mentions in his answer, your MemberDetails property is defined in the wrong class, it needs be in the Member class.
lbxMbrList.DisplayMemberPath = "lbxMember";
or
lbxMbrList.DisplayMemberPath = "MemberDetails";
And MemberDetails need to be a property of Member (not MemberList)
I am trying to get the user's friends list from Facebook.
The problem seems to be the Javabean...
FBUser fbuser = new Gson().fromJson(jsonStr, FBUser.class);
public class FBUser implements Serializable {
private static final long serialVersionUID = -3154429420153433117L;
private String id;
private String name;
private String email;
private Friends friendsList = new Friends();
private FBUser() { }
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public List<Data> getFriendsList() {
return friendsList.getData();
}
public static class Friends implements Serializable {
private static final long serialVersionUID = 6991758772193514527L;
private List<Data> data;
private Friends() { }
public List<Data> getData() {
return data;
}
public void setData(List<Data> data) {
this.data = data;
}
public class Paging implements Serializable {
private static final long serialVersionUID = 1689816298710621080L;
private String next;
private Paging() { }
public String getNext() {
return next;
}
public void setNext(String next) {
this.next = next;
}
}
}
public class Data implements Serializable {
private static final long serialVersionUID = -5008541658519841090L;
private String id;
private String name;
private Data() { }
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
}
Json:
json: {"id":"10861234","name":"Whatever","email":"whatever\u0040gmail.com","friends":{"data":[{"name":"Someone","id":"10861234"},{"name" ...43"}],"paging":{"next":"https:\/\/graph.facebook.com\/10861234\/friends..."}}}
The fields ID, Name and Email I can retrieve succesfully... but the friendsList is null... =(
Maybe it is the way I am trying to get it from the nested class, any suggestions on that?
There is no friendsList in your JSON (or, there's no friends in your Java class - whichever way you'd like to look at it). Gson silently ignores anything in the JSON that is not present in your classes.
You have a field friends whose value is an object. That object has a field data which is an array of objects and a field paging which is another object.
You need to write Java classes that match that structure. You're ... close.
In your FBUser class change:
private Friends friendsList = new Friends();
to:
private Friends friends = new Friends();
or:
#SerializedName("friends")
private Friends friendsList = new Friends();
Then in your Friends class you need to add:
private Paging paging = new Paging();
Also note that you don't have to initialize these values unless you specifically don't want them to be non-null when using these classes elsewhere.
Following is part of service layer which is provided by WCF service :
[Serializable]
public class WaitInfo
{
private string roomName;
private string pName;
private string tagNo;
public string RoomName
{ get { return roomName; } set { this.roomName = value; } }
public string PName
{ get { return pName; } set { this.pName = value; } }
public string TagNo
{ get { return tagNo; } set { this.tagNo = value; } }
}
public class Service1 : IService1
{
public List<WaitInfo> GetWaitingList()
{
MyDBDataContext db = new MyDBDataContext();
var query = from w in db.WAIT_INFOs
select new WaitInfo
{
TagNo = w.PATIENT_INFO.TAG_NO,
RoomName= w.ROOM_INFO.ROOM_NAME,
PName= w.PATIENT_INFO.P_NAME
};
List<WaitInfo> result = query.ToList();
return result;
}
And following is codebehind part of UI layer which is provided by Silverlight
public MainPage()
{
InitializeComponent();
Service1Client s = new Service1Client();
s.GetWaitingListCompleted +=
new EventHandler<GetWaitingListByCompletedEventArgs>( s_GetWaitingListCompleted);
s.GetWaitingListAsync();
}
void s_GetWaitingListCompleted(object sender,
RadControlsSilverlightApplication1.ServiceReference2.GetWaitingListByCompletedEventArgs e)
{
GridDataGrid.ItemsSource = e.Result;
}
And following is xaml code in Silverlight page
<Grid x:Name="LayoutRoot">
<data:DataGrid x:Name="GridDataGrid"></data:DataGrid>
</Grid>
It is very simple code, however what I am thinking weird is property name of object at "e.Result" in the code behind page.
In the service layer, although properties' names are surely "RoomName, PName, TagNo", in the silverlight properties' names are "roomName, pName, tagNo" which are private variable name of the WaitingList Object.
Did I something wrong?
Thanks in advance.
Unless you specifically decorate your class with the DataContract attribute (which you should, instead of Serializable) then a default DataContract will be inferred. For normal Serializable types, this means the fields will be serialized as opposed to the properties.
You can markup your class in either of the following two ways. The latter will use the property accessors when serializing/deserializing your object which may be very useful or be a hassle depending on your circumstances.
[DataContract]
public class WaitInfo
{
[DataMember(Name="RoomName")]
private string roomName;
[DataMember(Name="PName")]
private string pName;
[DataMember(Name="TagNo")]
private string tagNo;
public string RoomName
{ get { return roomName; } set { this.roomName = value; } }
public string PName
{ get { return pName; } set { this.pName = value; } }
public string TagNo
{ get { return tagNo; } set { this.tagNo = value; } }
}
The method I prefer:
[DataContract]
public class WaitInfo
{
private string roomName;
private string pName;
private string tagNo;
[DataMember]
public string RoomName
{ get { return roomName; } set { this.roomName = value; } }
[DataMember]
public string PName
{ get { return pName; } set { this.pName = value; } }
[DataMember]
public string TagNo
{ get { return tagNo; } set { this.tagNo = value; } }
}