Say a user can have a document set which each set can have one or more files. On the UI I want to allow the user to sort by the file CreatedDate. So when the user clicks on the column header they can sort by date (asc/desc). Given the following how can I configure this sorting behavior HotChocolate side?
public class User
{
public List<DocSet> DocSets {get;set;}
}
public class DocSet
{
public List<File> Files {get;set}
public User User {get;set;}
}
public File
{
public string Name {get;set;}
public DocSet DocSet {get;set;}
public DateTime CreatedDate {get;set;}
}
Here's the HotChocolate query but not sure how to allow sorting (asc/desc) on the File CreatedDate property.
[UseDbContext]
[UseSorting]
public IQueryable<User> GetUser(
[ScopedService] MyDbContext dbContext
) => dbContext.Users;
try this:
public class DocSet
{
[UseSorting]
public List<File> Files {get;set}
public User User {get;set;}
}
Related
below is my code
I am trying to pull data from database using entityframework.
EmployeeDataContext class -
namespace _09032020_1.Models
{
public class EmployeeDataContext : DbContext
{
public DbSet<Employee> Employees { get; set; }
}
}
Employee model -
namespace _09032020_1.Models
{
[Table("TbleEmployee")]
public class Employee
{
public int employeeId { get; set; }
public string employeeName { get; set; }
public string employeeCity { get; set; }
public string employeeGender { get; set; }
public int departmentId { get; set; }
}
}
below are the table columns.
here is the controller code
namespace _09032020_1.Controllers
{
public class EmployeeController : Controller
{
public ActionResult Index()
{
EmployeeDataContext employeeDataContext = new EmployeeDataContext();
Employee employee = new Employee();
List<Employee> employees1 = new List<Employee>();
employees1 = employeeDataContext.Employees.ToList();
return View(employees1);
}
}
}
I am not getting data inside employeeDataContext
Please let me know if more info regarding config file requires.
Create the table w data. The first column is primary key and identity.
In an MVC project (you can use another type, also I am showing database first, and you can use another type, right click on the Models folder and add ADO.NET Entity Data Model named EmployeeDataContext. Choose EF Designer from database. New connection, and choose your db. Save connection as EmployeeDataContext and choose your table.
Put this in your code:
using (EmployeeDataContext context = new EmployeeDataContext())
{
var emps = context.Employees.ToList();
}
I got my answer,
I have written wrong table name as model attribute [Table("TbleEmployee")]
My table name is TblEmplyee. So it should be [Table("TblEmployee")]
As I changed this I abled to proceed forward.
I have smaller separate models I don't want to map to SQL Server database table. Is it possible to use them as properties of an object that's mapped to SQL Server table?
I know SQL Server is relational, but of a case where I don't to map these separate models to database table? I have done it several times with non relational databases like MongoDb.
Here is and example what I want to achieve
The DbContext class:
public class ApplicationDbContext: DbContext
{
....
public DbSet<User> Users {get; set;}
}
User class:
public class User
{
public Guid Id { get; set; }
public string Name { get; set; }
public string Email { get; set; }
public LoginProfile LoginProfile { get; set; }
}
LoginProfile class:
public class LoginProfile
{
public string Username { get; set; }
public string Password { get; set; }
}
In the above example User model class is the only one I want to have as table in my database. Is it possible to do that, and do things like
var password = user.LoginProfile.Password;
user.LoginProfile.username = "username";
We are Using Service fabric Actor application,in that we have multiple actors. if i want to Update 10 records each record acts as like different individual instance.so when we insert it will create new ObjectContext everytime. so we con't store cache data in context level. so my datamodel is like
public class StudentData {
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.None)]
public String StudentId { set; get; }
public string StudentName {get;set;}
public String StudentAge { set; get; }
public string StudentDob {get;set;}
public String StudentSTD { set; get; }
public string StudentEmail {get;set;}
public String StudentAddress { set; get; }
public string StudentReligion {get;set;}
}
And when we want to update 10 students 10 object instances will create. so for every instance it will call the below method. so below method will call 10 times as different instance id.
public async Update(){
using(var context = new DatabaseContext()){
context.InfoObjectDatas.Attach(studentObj);
context.Entry(studentObj).State = System.Data.Entity.EntityState.Modified;
await context.SaveChangesAsync();
} }
We are Using Service fabric Actor application,in that we have multiple actors. if i want to insert 10 records each record acts as like different individual instance.so when we insert it will create new ObjectContext everytime. so we con't store cache data in context level. so my datamodel is like
public class StudentData {
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.None)]
public String StudentId { set; get; }
public string StudentName {get;set;}
public String StudentAge { set; get; }
public string StudentDob {get;set;}
public String StudentSTD { set; get; }
public string StudentEmail {get;set;}
public String StudentAddress { set; get; }
public string StudentReligion {get;set;}
}
And when we want to insert 10 students 10 object instances will create. so for every instance it will call . so i am using like for loop for 10 objects.
public async insert(){
using(var context = new DatabaseContext()){
Student st=new Student();
context.StudentData.Add(st);
context.StudentData.SaveChanges();
} }
I'm trying to simply display the list of members in a specific group using the Facebook Graph API. I'm using Newtonsoft.JSON.
Here is the results of my url query:
Graph API Results
I used a JSON class generator and it gave me this:
public class Datum
{
public string name { get; set; }
public string id { get; set; }
public bool administrator { get; set; }
}
public class Cursors
{
public string before { get; set; }
public string after { get; set; }
}
public class Paging
{
public Cursors cursors { get; set; }
}
public class Members
{
public List<Datum> data { get; set; }
public Paging paging { get; set; }
}
public class RootObject
{
public Members members { get; set; }
public string id { get; set; }
}
I've tried every combination I can think of to display simply the list of members in a multi-line text box, but not sure if this is even the best way to display the list on a Windows Form App.
Could someone help me understand 2 things.
1) What is the best component to display the list of names in a Windows Form App?
2) What is the 1 or 2 lines to generate just the list of names using JsonConvert.DeserializeObject from this?
My raw data is stored in: string responseFromServer = reader.ReadToEnd();
To deserialize the JSON into your classes:
RootObject obj = JsonConvert.DeserializeObject<RootObject>(responseFromServer);
To get the member names into a List<string>:
List<string> members = obj.members.data.Select(d => d.name).ToList();
Note: You need to have using System.Linq; at the top of your file in order to use the Select and ToList methods.
As far as displaying the data in a windows form app, there's not a "best" component-- it depends on what you're trying to accomplish as to what control you would choose to use. For example, if all you want to do is display the list of names in a multi-line textbox, you could do this:
textBox1.Text = string.Join("\r\n", members);
If you want to allow the user to be able to select individual names and do something based on that selection, you would probably want to use a ListBox or a ComboBox instead. You can populate a ListBox or ComboBox like this:
listBox1.DisplayMember = "name";
listBox1.DataSource = obj.members.data;
That should be enough to get you started.
I want to know how many bindings I should have on a data entry form.
I have the following domain classes
public class SalesOrder
{
public virtual DocumentHeader DocumentHeader {get; set;}
// some other properties
}
public class DocumentHeader
{
public virtual Account Account {get; set;}
// some other properties
}
The context has
public DbSet<SalesOrder> SalesOrders { get; set; }
public DbSet<DocumentHeader> DocumentHeaders { get; set; }
public DbSet<Account> Accounts { get; set; }
My data entry screen displays fields from the sales order and document header, and it displays the account.
I have the following code to set up the bindingsource
var dset = this.Context.SalesOrders;
this.bindingSource.DataSource = dset.Local.ToBindingList();
How do I bind the DocumentHeader and Account properties on the data entry form?