import React from 'react';
import TreeList, {
RemoteOperations, Column, SearchPanel, HeaderFilter, Editing, RequiredRule, Lookup, TreeListTypes,
} from 'devextreme-react/tree-list';
import AspNetData from 'devextreme-aspnet-data-nojquery';
const url = 'https://js.devexpress.com/Demos/Mvc/api/TreeListTasks';
const tasksData = AspNetData.createStore({
key: 'Task_ID',
loadUrl: `${url}/Tasks`,
insertUrl: `${url}/InsertTask`,
updateUrl: `${url}/UpdateTask`,
deleteUrl: `${url}/DeleteTask`,
onBeforeSend(method, ajaxOptions) {
ajaxOptions.xhrFields = { withCredentials: true };
},
});
const employeesData = AspNetData.createStore({
key: 'ID',
loadUrl: `${url}/TaskEmployees`,
});
const statusesData = [
'Not Started',
'Need Assistance',
'In Progress',
'Deferred',
'Completed',
];
const expandedKeys = [1, 2];
const initNewRow = (e: TreeListTypes.InitNewRowEvent) => {
e.data.Task_Status = 'Not Started';
e.data.Task_Start_Date = new Date();
e.data.Task_Due_Date = new Date();
};
const App = () => (
<TreeList
id="tree-list"
dataSource={tasksData}
keyExpr="Task_ID"
parentIdExpr="Task_Parent_ID"
hasItemsExpr="Has_Items"
defaultExpandedRowKeys={expandedKeys}
showRowLines={true}
showBorders={true}
columnAutoWidth={true}
wordWrapEnabled={true}
onInitNewRow={initNewRow}
>
<RemoteOperations filtering={true} sorting={true} grouping={true} />
<SearchPanel visible={true} />
<HeaderFilter visible={true} />
<Editing
mode="row"
allowAdding={true}
allowUpdating={true}
allowDeleting={true}
/>
<Column dataField="Task_Subject" minWidth={250}>
<RequiredRule />
</Column>
<Column dataField="Task_Assigned_Employee_ID" caption="Assigned" minWidth={120}>
<Lookup dataSource={employeesData} valueExpr="ID" displayExpr="Name" />
<RequiredRule />
</Column>
<Column dataField="Task_Status" caption="Status" minWidth={120}>
<Lookup dataSource={statusesData} />
</Column>
<Column dataField="Task_Start_Date" caption="Start Date" dataType="date" />
<Column dataField="Task_Due_Date" caption="Due Date" dataType="date" />
</TreeList>
);
export default App;
import React from 'react';
import TreeList, {
RemoteOperations,
Column,
SearchPanel,
HeaderFilter,
Editing,
RequiredRule,
Lookup,
} from 'devextreme-react/tree-list';
import AspNetData from 'devextreme-aspnet-data-nojquery';
const url = 'https://js.devexpress.com/Demos/Mvc/api/TreeListTasks';
const tasksData = AspNetData.createStore({
key: 'Task_ID',
loadUrl: `${url}/Tasks`,
insertUrl: `${url}/InsertTask`,
updateUrl: `${url}/UpdateTask`,
deleteUrl: `${url}/DeleteTask`,
onBeforeSend(method, ajaxOptions) {
ajaxOptions.xhrFields = { withCredentials: true };
},
});
const employeesData = AspNetData.createStore({
key: 'ID',
loadUrl: `${url}/TaskEmployees`,
});
const statusesData = ['Not Started', 'Need Assistance', 'In Progress', 'Deferred', 'Completed'];
const expandedKeys = [1, 2];
const initNewRow = (e) => {
e.data.Task_Status = 'Not Started';
e.data.Task_Start_Date = new Date();
e.data.Task_Due_Date = new Date();
};
const App = () => (
<TreeList
id="tree-list"
dataSource={tasksData}
keyExpr="Task_ID"
parentIdExpr="Task_Parent_ID"
hasItemsExpr="Has_Items"
defaultExpandedRowKeys={expandedKeys}
showRowLines={true}
showBorders={true}
columnAutoWidth={true}
wordWrapEnabled={true}
onInitNewRow={initNewRow}
>
<RemoteOperations
filtering={true}
sorting={true}
grouping={true}
/>
<SearchPanel visible={true} />
<HeaderFilter visible={true} />
<Editing
mode="row"
allowAdding={true}
allowUpdating={true}
allowDeleting={true}
/>
<Column
dataField="Task_Subject"
minWidth={250}
>
<RequiredRule />
</Column>
<Column
dataField="Task_Assigned_Employee_ID"
caption="Assigned"
minWidth={120}
>
<Lookup
dataSource={employeesData}
valueExpr="ID"
displayExpr="Name"
/>
<RequiredRule />
</Column>
<Column
dataField="Task_Status"
caption="Status"
minWidth={120}
>
<Lookup dataSource={statusesData} />
</Column>
<Column
dataField="Task_Start_Date"
caption="Start Date"
dataType="date"
/>
<Column
dataField="Task_Due_Date"
caption="Due Date"
dataType="date"
/>
</TreeList>
);
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
window.exports = window.exports || {};
window.config = {
transpiler: 'ts',
typescriptOptions: {
module: 'system',
emitDecoratorMetadata: true,
experimentalDecorators: true,
jsx: 'react',
},
meta: {
'react': {
'esModule': true,
},
'typescript': {
'exports': 'ts',
},
'devextreme/time_zone_utils.js': {
'esModule': true,
},
'devextreme/localization.js': {
'esModule': true,
},
'devextreme/viz/palette.js': {
'esModule': true,
},
'devextreme-aspnet-data-nojquery': {
'esModule': true,
},
},
paths: {
'npm:': 'https://unpkg.com/',
},
defaultExtension: 'js',
map: {
'ts': 'npm:plugin-typescript@4.2.4/lib/plugin.js',
'typescript': 'npm:typescript@4.2.4/lib/typescript.js',
'react': 'npm:react@17.0.2/umd/react.development.js',
'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js',
'prop-types': 'npm:prop-types@15.8.1/prop-types.js',
'devextreme-aspnet-data-nojquery': 'npm:devextreme-aspnet-data-nojquery@3.0.0/index.js',
'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js',
'luxon': 'npm:luxon@1.28.1/build/global/luxon.min.js',
'es6-object-assign': 'npm:es6-object-assign@1.1.0',
'devextreme': 'npm:devextreme@24.1.7/cjs',
'devextreme-react': 'npm:devextreme-react@24.1.7/cjs',
'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js',
'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js',
'devexpress-diagram': 'npm:devexpress-diagram@2.2.12/dist/dx-diagram.js',
'devexpress-gantt': 'npm:devexpress-gantt@4.1.56/dist/dx-gantt.js',
'@devextreme/runtime': 'npm:@devextreme/runtime@3.0.13',
'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js',
'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js',
'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js',
'inferno-hydrate': 'npm:inferno-hydrate@7.4.11/dist/inferno-hydrate.min.js',
'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js',
'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js',
'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js',
'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3',
// SystemJS plugins
'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js',
'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js',
// Prettier
'prettier/standalone': 'npm:prettier@2.8.8/standalone.js',
'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js',
},
packages: {
'devextreme': {
defaultExtension: 'js',
},
'devextreme-react': {
main: 'index.js',
},
'devextreme/events/utils': {
main: 'index',
},
'devextreme/localization/messages': {
format: 'json',
defaultExtension: 'json',
},
'devextreme/events': {
main: 'index',
},
'es6-object-assign': {
main: './index.js',
defaultExtension: 'js',
},
},
packageConfigPaths: [
'npm:@devextreme/*/package.json',
'npm:@devextreme/runtime@3.0.13/inferno/package.json',
],
babelOptions: {
sourceMaps: false,
stage0: true,
react: true,
},
};
System.config(window.config);
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
<!DOCTYPE html>
<html lang="en">
<head>
<title>DevExtreme Demo</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/24.1.7/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="styles.css" />
<script src="https://unpkg.com/core-js@2.6.12/client/shim.min.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script type="text/javascript" src="config.js"></script>
<script type="text/javascript">
System.import("./index.tsx");
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
</body>
</html>
#tree-list {
max-height: 640px;
}
using DevExtreme.AspNet.Data;
using DevExtreme.AspNet.Mvc;
using DevExtreme.MVC.Demos.Models;
using DevExtreme.MVC.Demos.Models.TreeList;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Formatting;
using System.Web.Http;
namespace DevExtreme.MVC.Demos.Controllers.ApiControllers {
[Route("api/TreeListTasks/{action}", Name = "TreeListTasks")]
public class TreeListTasksController : ApiController {
InMemoryTasksDataContext db = new InMemoryTasksDataContext();
[HttpGet]
public HttpResponseMessage Tasks(DataSourceLoadOptions loadOptions) {
var tasks = from d in db.Tasks
select new Models.TreeList.EmployeeTask {
Task_ID = d.Task_ID,
Task_Parent_ID = d.Task_Parent_ID,
Task_Owner_ID = d.Task_Owner_ID,
Task_Assigned_Employee_ID = d.Task_Assigned_Employee_ID,
Task_Completion = d.Task_Completion,
Task_Priority = d.Task_Priority,
Task_Status = d.Task_Status,
Task_Subject = d.Task_Subject,
Task_Start_Date = d.Task_Start_Date,
Task_Due_Date = d.Task_Due_Date,
Has_Items = db.Tasks.Count(task => task.Task_Parent_ID == d.Task_ID) > 0
};
return Request.CreateResponse(DataSourceLoader.Load(tasks, loadOptions));
}
[HttpGet]
public HttpResponseMessage TasksWithEmployees(DataSourceLoadOptions loadOptions) {
var tasks = from d in db.Tasks
select new Models.TreeList.EmployeeTask {
Task_ID = d.Task_ID,
Task_Parent_ID = d.Task_Parent_ID,
Task_Owner_ID = d.Task_Owner_ID,
Task_Assigned_Employee_ID = d.Task_Assigned_Employee_ID,
Task_Assigned_Employee = db.TaskEmployees.Where(employee => employee.ID == d.Task_Assigned_Employee_ID).FirstOrDefault(),
Task_Completion = d.Task_Completion,
Task_Priority = d.Task_Priority,
Task_Status = d.Task_Status,
Task_Subject = d.Task_Subject,
Task_Start_Date = d.Task_Start_Date,
Task_Due_Date = d.Task_Due_Date
};
return Request.CreateResponse(DataSourceLoader.Load(tasks, loadOptions));
}
[HttpGet]
public HttpResponseMessage TaskEmployees(DataSourceLoadOptions loadOptions) {
return Request.CreateResponse(DataSourceLoader.Load(db.TaskEmployees, loadOptions));
}
[HttpPost]
public HttpResponseMessage InsertTask(FormDataCollection form) {
var values = form.Get("values");
var newItem = new Models.TreeList.EmployeeTask();
JsonConvert.PopulateObject(values, newItem);
Validate(newItem);
if(!ModelState.IsValid)
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage());
db.Tasks.Add(newItem);
db.SaveChanges();
return Request.CreateResponse(HttpStatusCode.Created);
}
[HttpPut]
public HttpResponseMessage UpdateTask(FormDataCollection form) {
var key = Convert.ToInt32(form.Get("key"));
var values = form.Get("values");
var employee = db.Tasks.First(e => e.Task_ID == key);
JsonConvert.PopulateObject(values, employee);
Validate(employee);
if(!ModelState.IsValid)
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState.GetFullErrorMessage());
db.SaveChanges();
return Request.CreateResponse(HttpStatusCode.OK);
}
[HttpDelete]
public void DeleteTask(FormDataCollection form) {
var key = Convert.ToInt32(form.Get("key"));
var employee = db.Tasks.First(e => e.Task_ID == key);
db.Tasks.Remove(employee);
db.SaveChanges();
}
}
}
using System;
using System.Collections.Generic;
namespace DevExtreme.MVC.Demos.Models.TreeList {
public class InMemoryTasksDataContext : InMemoryDataContext<EmployeeTask> {
public ICollection<EmployeeTask> Tasks => ItemsInternal;
public IEnumerable<TaskEmployee> TaskEmployees => SampleData.SampleData.TaskEmployees;
protected override IEnumerable<EmployeeTask> Source => SampleData.SampleData.EmployeeTasks;
protected override int GetKey(EmployeeTask item) => item.Task_ID;
protected override void SetKey(EmployeeTask item, int key) => item.Task_ID = key;
}
}
using Newtonsoft.Json;
using Newtonsoft.Json.Converters;
using System;
using System.ComponentModel.DataAnnotations;
namespace DevExtreme.MVC.Demos.Models.TreeList {
[JsonConverter(typeof(StringEnumConverter))]
public enum Priority { Low, Normal, High, Urgent }
public class EmployeeTask {
public int Task_ID { set; get; }
public int Task_Parent_ID { set; get; }
[Required]
[Display(Name = "Assigned")]
public int Task_Assigned_Employee_ID { set; get; }
public TaskEmployee Task_Assigned_Employee { set; get; }
public int Task_Owner_ID { set; get; }
[Required]
[Display(Name = "Task Subject")]
public string Task_Subject { set; get; }
[Display(Name = "Start Date")]
public DateTime Task_Start_Date { set; get; }
[Display(Name = "Due Date")]
public DateTime Task_Due_Date { set; get; }
[Display(Name = "Status")]
public string Task_Status { set; get; }
public Priority Task_Priority { set; get; }
public int Task_Completion { set; get; }
public bool Has_Items { get; set; }
}
public class TaskEmployee {
public int ID { set; get; }
public string Name { set; get; }
public string Picture { set; get; }
}
}