Backend API
import React, { useCallback, useState } from 'react';
import DataGrid, {
Column, Editing, ValidationRule, Button, Toolbar, Item, Scrolling, Pager,
} from 'devextreme-react/data-grid';
import type { DataGridTypes } from 'devextreme-react/data-grid';
import SelectBox from 'devextreme-react/select-box';
import Guid from 'devextreme/core/guid';
import { dataSource, positionLabel, scrollingModeLabel } from './data.ts';
const newRowPositionOptions = ['first', 'last', 'pageTop', 'pageBottom', 'viewportTop', 'viewportBottom'];
const scrollingModeOptions = ['standard', 'virtual'];
const isAddButtonVisible = ({ row }: { row: DataGridTypes.Row }) => !row.isEditing;
const onRowInserted = (e: DataGridTypes.RowInsertedEvent) => {
e.component.navigateToRow(e.key);
};
const App = () => {
const [newRowPosition, setNewRowPosition] = useState<DataGridTypes.NewRowPosition>('viewportTop');
const [scrollingMode, setScrollingMode] = useState<DataGridTypes.DataGridScrollMode>('standard');
const [changes, setChanges] = useState<DataGridTypes.DataChange[]>([]);
const [editRowKey, setEditRowKey] = useState<string | null>(null);
const onAddButtonClick = useCallback((e: DataGridTypes.ColumnButtonClickEvent) => {
const key = new Guid().toString();
setChanges([{
key,
type: 'insert',
insertAfterKey: e.row?.key,
data: {},
}]);
setEditRowKey(key);
}, []);
return (
<>
<DataGrid
id='gridContainer'
dataSource={dataSource}
showBorders={true}
columnAutoWidth={true}
remoteOperations={true}
onRowInserted={onRowInserted}
>
<Scrolling mode={scrollingMode} />
<Editing
mode='row'
allowAdding={true}
allowDeleting={true}
allowUpdating={true}
confirmDelete={false}
useIcons={true}
newRowPosition={newRowPosition}
changes={changes}
onChangesChange={setChanges}
editRowKey={editRowKey}
onEditRowKeyChange={setEditRowKey}
/>
<Pager visible={true} />
<Column dataField='OrderID' allowEditing={false} />
<Column dataField='OrderDate' dataType='date'>
<ValidationRule type='required' />
</Column>
<Column dataField='ShipName' />
<Column dataField='ShipCity' />
<Column dataField='ShipPostalCode' />
<Column dataField='ShipCountry' />
<Column type='buttons'>
<Button icon='add'
text='Add'
onClick={onAddButtonClick}
visible={isAddButtonVisible}
/>
<Button name='delete' />
<Button name='save' />
<Button name='cancel' />
</Column>
<Toolbar>
<Item name='addRowButton' showText='always' />
</Toolbar>
</DataGrid>
<div className='options'>
<div className='caption'>Options</div>
<div className='option-container'>
<div className='option'>
<span>New Row Position</span>
<SelectBox
id='newRowPositionSelectBox'
value={newRowPosition}
inputAttr={positionLabel}
items={newRowPositionOptions}
onValueChange={setNewRowPosition}
/>
</div>
<div className='option'>
<span>Scrolling Mode</span>
<SelectBox
id='scrollingModeSelectBox'
value={scrollingMode}
inputAttr={scrollingModeLabel}
items={scrollingModeOptions}
onValueChange={setScrollingMode}
/>
</div>
</div>
</div>
</>
);
};
export default App;
import React, { useCallback, useState } from 'react';
import DataGrid, {
Column,
Editing,
ValidationRule,
Button,
Toolbar,
Item,
Scrolling,
Pager,
} from 'devextreme-react/data-grid';
import SelectBox from 'devextreme-react/select-box';
import Guid from 'devextreme/core/guid';
import { dataSource, positionLabel, scrollingModeLabel } from './data.js';
const newRowPositionOptions = [
'first',
'last',
'pageTop',
'pageBottom',
'viewportTop',
'viewportBottom',
];
const scrollingModeOptions = ['standard', 'virtual'];
const isAddButtonVisible = ({ row }) => !row.isEditing;
const onRowInserted = (e) => {
e.component.navigateToRow(e.key);
};
const App = () => {
const [newRowPosition, setNewRowPosition] = useState('viewportTop');
const [scrollingMode, setScrollingMode] = useState('standard');
const [changes, setChanges] = useState([]);
const [editRowKey, setEditRowKey] = useState(null);
const onAddButtonClick = useCallback((e) => {
const key = new Guid().toString();
setChanges([
{
key,
type: 'insert',
insertAfterKey: e.row?.key,
data: {},
},
]);
setEditRowKey(key);
}, []);
return (
<>
<DataGrid
id="gridContainer"
dataSource={dataSource}
showBorders={true}
columnAutoWidth={true}
remoteOperations={true}
onRowInserted={onRowInserted}
>
<Scrolling mode={scrollingMode} />
<Editing
mode="row"
allowAdding={true}
allowDeleting={true}
allowUpdating={true}
confirmDelete={false}
useIcons={true}
newRowPosition={newRowPosition}
changes={changes}
onChangesChange={setChanges}
editRowKey={editRowKey}
onEditRowKeyChange={setEditRowKey}
/>
<Pager visible={true} />
<Column
dataField="OrderID"
allowEditing={false}
/>
<Column
dataField="OrderDate"
dataType="date"
>
<ValidationRule type="required" />
</Column>
<Column dataField="ShipName" />
<Column dataField="ShipCity" />
<Column dataField="ShipPostalCode" />
<Column dataField="ShipCountry" />
<Column type="buttons">
<Button
icon="add"
text="Add"
onClick={onAddButtonClick}
visible={isAddButtonVisible}
/>
<Button name="delete" />
<Button name="save" />
<Button name="cancel" />
</Column>
<Toolbar>
<Item
name="addRowButton"
showText="always"
/>
</Toolbar>
</DataGrid>
<div className="options">
<div className="caption">Options</div>
<div className="option-container">
<div className="option">
<span>New Row Position</span>
<SelectBox
id="newRowPositionSelectBox"
value={newRowPosition}
inputAttr={positionLabel}
items={newRowPositionOptions}
onValueChange={setNewRowPosition}
/>
</div>
<div className="option">
<span>Scrolling Mode</span>
<SelectBox
id="scrollingModeSelectBox"
value={scrollingMode}
inputAttr={scrollingModeLabel}
items={scrollingModeOptions}
onValueChange={setScrollingMode}
/>
</div>
</div>
</div>
</>
);
};
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
// eslint-disable-next-line import/no-unresolved
import 'anti-forgery';
ReactDOM.render(
<App />,
document.getElementById('app'),
);
import { createStore } from 'devextreme-aspnet-data-nojquery';
const url = 'https://js.devexpress.com/Demos/NetCore/api/DataGridWebApi';
export const dataSource = createStore({
key: 'OrderID',
loadUrl: `${url}/Orders`,
insertUrl: `${url}/InsertOrder`,
updateUrl: `${url}/UpdateOrder`,
deleteUrl: `${url}/DeleteOrder`,
onBeforeSend: (method, ajaxOptions) => {
ajaxOptions.xhrFields = { withCredentials: true };
},
});
export const positionLabel = { 'aria-label': 'Position' };
export const scrollingModeLabel = { 'aria-label': 'Scrolling Mode' };
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
import 'anti-forgery';
ReactDOM.render(<App />, document.getElementById('app'));
import { createStore } from 'devextreme-aspnet-data-nojquery';
const url = 'https://js.devexpress.com/Demos/NetCore/api/DataGridWebApi';
export const dataSource = createStore({
key: 'OrderID',
loadUrl: `${url}/Orders`,
insertUrl: `${url}/InsertOrder`,
updateUrl: `${url}/UpdateOrder`,
deleteUrl: `${url}/DeleteOrder`,
onBeforeSend: (method, ajaxOptions) => {
ajaxOptions.xhrFields = { withCredentials: true };
},
});
export const positionLabel = { 'aria-label': 'Position' };
export const scrollingModeLabel = { 'aria-label': 'Scrolling Mode' };
<!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/26.1.5/css/dx.light.css" />
<link rel="stylesheet" type="text/css" href="./bundle.css" />
</head>
<body class="dx-viewport">
<div class="demo-container">
<div id="app"></div>
</div>
<script src="bundles/vendor/react.vendor.js"></script>
<script src="./bundle.js"></script>
</body>
</html>
#gridContainer {
height: 440px;
}
.options {
margin-top: 20px;
padding: 20px;
background-color: rgba(191, 191, 191, 0.15);
position: relative;
}
.caption {
font-size: 18px;
font-weight: 500;
}
.option-container {
display: flex;
margin: 0 auto;
justify-content: space-between;
}
.option {
margin-top: 10px;
display: flex;
align-items: center;
}
.option-caption {
white-space: nowrap;
margin: 0 8px;
}
.option > span {
position: relative;
margin-right: 10px;
}
#newRowPositionSelectBox {
width: 150px;
}
#scrollingModeSelectBox {
width: 150px;
}
-
"viewportTop" (default)
Insert a new row at the top of the viewport. -
"viewportBottom"
Insert a new row at the bottom of the viewport. -
"pageTop"
Insert a new row at the top of the current page. In virtual and infinite scrolling modes, "pageTop" works like "viewportTop". -
"pageBottom"
Insert a new row at the bottom of the current page. In virtual and infinite scrolling modes, "pageBottom" works like "viewportBottom". -
"first"
Navigate to the beginning of the dataset and insert a new row at the top. -
"last"
Navigate to the end of the dataset and insert a new row at the bottom. Does not apply in infinite scrolling mode.
In this demo, you can use a drop-down menu to change the newRowPosition property value at runtime. To see how your choice affects "new record" position, click the "Add a row" button in the toolbar. This demo also allows you to switch between standard and virtual scrolling modes (you can also see how newRowPosition works with each scrolling mode).
If you wish to position new records in a more flexible manner, you can specify the key before/after which a new record must be inserted. To apply this feature, set the insertBeforeKey or insertAfterKey property in the pending changes array. In this demo, each row contains an "Add row" button that inserts a new row after the current row. The insertAfterKey property is used to implement this functionality. Review the button's onClick event handler for more information.
A new record remains at a specified position until it is saved. Once saved, the DevExtreme DataGrid reloads data and sorts all records. As a result, the saved record may appear outside the viewport. To navigate to this record, call the navigateToRow(key) method from the onRowInserted event handler (as illustrated in this demo). As an alternative, you can set the refreshMode to "repaint". In this instance, the record retains its custom position after a save operation (however, position may change once data is shaped in the future).