Vue Gantt - tasks

Configures tasks.

Selector: DxTasks
Type:

Object

Default Value: null

View Demo

DevExtreme Gantt Chart - Tasks

Use the dataSource property to bind the UI component to a data source, which contains tasks. If the field names in your data source differ from default names ('id', 'parentId', 'title', 'start', 'end', 'progress', 'color'), use appropriate properties (keyExpr, parentIdExpr, etc.) to map data fields.

The 'color' field accepts the following values:

NOTE
The 'id' and 'parentId' fields should not have the same value.
jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            keyExpr: "taskId", 
            parentIdExpr: "parentTaskId",
            titleExpr: "taskTitle",
            progressExpr: "taskProgress",
            startExpr: "startDate",
            endExpr: "endDate",
            colorExpr: "taskColor"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.component.ts
app.module.ts
app.service.ts
angular.json
<dx-gantt ... >
    <dxo-tasks 
        [dataSource]="tasks" 
        keyExpr="taskId"
        parentIdExpr="parentTaskId"
        titleExpr="taskTitle"
        progressExpr="taskProgress"
        startExpr="startDate"
        endExpr="endDate"
        colorExpr="taskColor" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})

export class AppComponent {
    tasks: Task[];
    // ...
    constructor(service: Service) {
        this.tasks = service.getTasks();
        // ...
    }        
}
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';
import { DxGanttModule } from 'devextreme-angular';
import { Service, Task, ... } from './app.service';

@NgModule({
    imports: [
        BrowserModule,
        DxGanttModule
    ],
    providers: [Service],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
{
  "projects": {
    "ProjectName": {
      "architect": {
        "build": {
          "options": {
            "styles": [
              "node_modules/devextreme/dist/css/dx.light.css",
              "node_modules/devexpress-gantt/dist/dx-gantt.css",
              "src/styles.css"
            ],
            ...
          },
          ...
        },
        ...
      }
    },
    ...
  },
  ...
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks
            :data-source="tasks"
            key-expr="taskId"
            parent-id-expr="parentTaskId"
            title-expr="taskTitle"
            progress-expr="taskProgress"
            start-expr="startDate"
            end-expr="endDate"
            color-expr="taskColor" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    import 'devextreme/dist/css/dx.light.css';
    import 'devexpress-gantt/dist/dx-gantt.css'; 

    import { 
        DxGantt, 
        DxTasks, 
        // ... 
    } from 'devextreme-vue/gantt';

    import { 
        tasks, 
        // ... 
    } from './data.js';

    export default {
        components: { 
            DxGantt, 
            DxTasks, 
            // ... 
        },
        data() {
            return { 
                tasks, 
                // ... 
            };
        }
    };
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
import React from 'react';

import 'devextreme/dist/css/dx.light.css';
import 'devexpress-gantt/dist/dx-gantt.css'; 

import Gantt, { 
    Tasks, 
    // ... 
} from 'devextreme-react/gantt';
import { 
    tasks, 
    // ... 
} from './data.js';

const App = () => {
    return (
        <Gantt ... >
            <Tasks 
                dataSource={tasks}
                keyExpr="taskId"
                parentIdExpr="parentTaskId"
                titleExpr="taskTitle"
                progressExpr="taskProgress"
                startExpr="startDate"
                endExpr="endDate"
                colorExpr="taskColor" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
ASP.NET Core Controls
Razor C#
@(Html.DevExtreme().Gantt<Gantt.Task>()
    .Tasks(t => t
        .DataSource(ds => ds.Array().Data(SampleData.GanttTasks).Key("ID"))
        .KeyExpr("ID")
        .TitleExpr("Title")
        .ParentIdExpr("ParentId")
        .StartExpr("Start")
        .EndExpr("End")
        .ProgressExpr("Progress")
    )
    // ...
)
<!-- C# -->
public partial class SampleData {
    public static readonly IEnumerable<Task> GanttTasks = new[] {
        new Task {
            ID = 1,
            ParentId = 0,
            Title = "Software Development",
            Start = DateTime.Parse("2019-02-21T05:00:00.000Z"),
            End = DateTime.Parse("2019-07-04T12:00:00.000Z"),
            Progress = 31
        },        
        // ...
    }
    // ...
}
ASP.NET MVC Controls
Razor C#
@(Html.DevExtreme().Gantt<Gantt.Task>()
    .Tasks(t => t
        .DataSource(ds => ds.Array().Data(SampleData.GanttTasks).Key("ID"))
        .KeyExpr("ID")
        .TitleExpr("Title")
        .ParentIdExpr("ParentId")
        .StartExpr("Start")
        .EndExpr("End")
        .ProgressExpr("Progress")
    )
    // ...
)
<!-- C# -->
public partial class SampleData {
    public static readonly IEnumerable<Task> GanttTasks = new[] {
        new Task {
            ID = 1,
            ParentId = 0,
            Title = "Software Development",
            Start = DateTime.Parse("2019-02-21T05:00:00.000Z"),
            End = DateTime.Parse("2019-07-04T12:00:00.000Z"),
            Progress = 31
        },        
        // ...
    }
    // ...
}
See Also

colorExpr

Specifies the data field that provides tasks' color.

Selector: color-expr
Type:

String

|

Function

Default Value: 'color'

If the field name in your data source differs from default 'color', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            colorExpr: "taskColor"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        colorExpr="taskColor" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            color-expr="taskColor" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                colorExpr="taskColor" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

dataSource

Binds the UI component to the data source which contains tasks.

Selector: data-source
Type:

Store

|

DataSource

|

DataSource Configuration

|

String

|

Array<any>

| null
Default Value: null

Refer to the tasks property to see how to specify the dataSource property.

endExpr

Specifies the data field that provides tasks' end dates.

Selector: end-expr
Type:

String

|

Function

Default Value: 'end'

If the field name in your data source differs from default 'end', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            endExpr: "endDate"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        endExpr="endDate" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            end-expr="endDate" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                endExpr="endDate" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

keyExpr

Specifies the data field that provides keys for tasks.

Selector: key-expr
Type:

String

|

Function

Default Value: 'id'

If the field name in your data source differs from default 'id', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            keyExpr: "taskId"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        keyExpr="taskId" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            key-expr="taskId" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                keyExpr="taskId" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

parentIdExpr

Specifies the data field that provides tasks' parent IDs.

Selector: parent-id-expr
Type:

String

|

Function

Default Value: 'parentId'

If the field name in your data source differs from default 'parentId', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            parentIdExpr: "parentTaskId"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        parentIdExpr="parentTaskId" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            parent-id-expr="parentTaskId" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                parentIdExpr="parentTaskId" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

progressExpr

Specifies the data field that provides tasks' progress.

Selector: progress-expr
Type:

String

|

Function

Default Value: 'progress'

If the field name in your data source differs from default 'progress', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            progressExpr: "taskProgress"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        progressExpr="taskProgress" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            progress-expr="taskProgress" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                progressExpr="taskProgress" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

startExpr

Specifies the data field that provides tasks' start dates.

Selector: start-expr
Type:

String

|

Function

Default Value: 'start'

If the field name in your data source differs from default 'start', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            startExpr: "startDate"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        startExpr="startDate" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            start-expr="startDate" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                startExpr="startDate" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];

titleExpr

Specifies the data field that provides task titles.

Selector: title-expr
Type:

String

|

Function

Default Value: 'title'

If the field name in your data source differs from default 'title', use this property to map data fields:

jQuery
index.js
data.js
$(function() {
    $("#gantt").dxGantt({
        tasks: {
            dataSource: tasks,
            // ...
            titleExpr: "taskTitle"
        },
        //...
    });
});
var tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31
    'taskColor': 'red'
},
// ...
];
Angular
app.component.html
app.service.ts
<dx-gantt ... >
    <dxo-tasks ...
        [dataSource]="tasks" 
        titleExpr="taskTitle" >
    </dxo-tasks>
    <!-- ... -->
</dx-gantt>
import { Injectable } from '@angular/core';

export class Task {
    taskId: number;
    parentTaskId: number;
    taskTitle: string;
    startDate: Date;
    endDate: Date;
    taskProgress: number;
    taskColor: string;
}

const tasks: Task[] = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...   
]; 
@Injectable()
export class Service {
    getTasks(): Task[] {
        return tasks;
    }
}
Vue
App.vue
data.js
<template>
    <DxGantt ... >        
        <DxTasks ...
            :data-source="tasks"
            title-expr="taskTitle" />
        <!-- ... -->
    </DxGantt>
</template>
<script>
    // ...
</script>
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];
React
App.js
data.js
// ...
const App = () => {
    return (
        <Gantt ... >
            <Tasks ...
                dataSource={tasks}
                titleExpr="taskTitle" />
            {/* ... */}
        </Gantt>
    );
};

export default App;
export const tasks = [{
    'taskId': 1,
    'parentTaskId': 0,
    'taskTitle': 'Software Development',
    'startDate': new Date('2019-02-21T05:00:00.000Z'),
    'endDate': new Date('2019-07-04T12:00:00.000Z'),
    'taskProgress': 31,
    'taskColor': 'red'
},
// ...
];