CRUD Operations
Documentation
This demo shows how to implement remote CRUD operations in the CustomStore. You can view the server implementation under the DataGridWebApiController tab in the ASP.NET MVC version of this demo. The requests sent to the server are displayed under the DataGrid.
After a cell is edited, the DataGrid can behave differently depending on the selected refresh mode: reload data from the server (the refreshMode is full), reapply data processing operations (reshape), or merely rerender the changed cells (repaint).
Feel free to share demo-related thoughts here.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
If you have technical questions, please create a support ticket in the DevExpress Support Center.
Thank you!
We appreciate your feedback.
We appreciate your feedback.
<dx-data-grid
id="grid"
[dataSource]="dataSource"
[repaintChangesOnly]="true"
[showBorders]="true">
<dxo-scrolling mode="virtual"></dxo-scrolling>
<dxo-editing
mode="cell"
[refreshMode]="refreshMode"
[allowAdding]="true"
[allowUpdating]="true"
[allowDeleting]="true">
</dxo-editing>
<dxi-column dataField="CustomerID" caption="Customer">
<dxo-lookup [dataSource]="customersData" valueExpr="Value" displayExpr="Text"></dxo-lookup>
</dxi-column>
<dxi-column dataField="OrderDate" dataType="date"></dxi-column>
<dxi-column dataField="Freight"></dxi-column>
<dxi-column dataField="ShipCountry"></dxi-column>
<dxi-column dataField="ShipVia" caption="Shipping Company" dataType="number">
<dxo-lookup [dataSource]="shippersData" valueExpr="Value" displayExpr="Text"></dxo-lookup>
</dxi-column>
<dxo-summary>
<dxi-total-item
column="CustomerID"
summaryType="count">
</dxi-total-item>
<dxi-total-item
column="Freight"
summaryType="sum"
valueFormat="#0.00">
</dxi-total-item>
</dxo-summary>
</dx-data-grid>
<div class="options">
<div class="caption">Options</div>
<div class="option">
<span>Refresh Mode:</span>
<dx-select-box
[(value)]="refreshMode"
[items]="refreshModes">
</dx-select-box>
</div>
<div id="requests">
<div>
<div class="caption">Network Requests</div>
<dx-button
id="clear"
text="Clear"
(onClick)="clearRequests()">
</dx-button>
</div>
<ul>
<li *ngFor="let request of requests">{{request}}</li>
</ul>
</div>
</div>
import { NgModule, Component, enableProdMode, ChangeDetectionStrategy } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { HttpClient, HttpClientModule, HttpHeaders, HttpParams } from '@angular/common/http';
import { DxDataGridModule, DxSelectBoxModule, DxButtonModule } from 'devextreme-angular';
import CustomStore from 'devextreme/data/custom_store';
import { formatDate } from 'devextreme/localization';
if(!/localhost/.test(document.location.host)) {
enableProdMode();
}
var URL = "https://js.devexpress.com/Demos/Mvc/api/DataGridWebApi";
@Component({
selector: 'demo-app',
templateUrl: 'app/app.component.html',
styleUrls: ['app/app.component.css'],
preserveWhitespaces: true
})
export class AppComponent {
dataSource: any;
customersData: any;
shippersData: any;
refreshModes: string[];
refreshMode: string;
requests: string[] = [];
constructor(private http: HttpClient) {
this.refreshMode = "reshape";
this.refreshModes = ["full", "reshape", "repaint"];
this.dataSource = new CustomStore({
key: "OrderID",
load: () => this.sendRequest(URL + "/Orders"),
insert: (values) => this.sendRequest(URL + "/InsertOrder", "POST", {
values: JSON.stringify(values)
}),
update: (key, values) => this.sendRequest(URL + "/UpdateOrder", "PUT", {
key: key,
values: JSON.stringify(values)
}),
remove: (key) => this.sendRequest(URL + "/DeleteOrder", "DELETE", {
key: key
})
});
this.customersData = {
paginate: true,
store: new CustomStore({
key: "Value",
loadMode: "raw",
load: () => this.sendRequest(URL + "/CustomersLookup")
})
};
this.shippersData = new CustomStore({
key: "Value",
loadMode: "raw",
load: () => this.sendRequest(URL + "/ShippersLookup")
});
}
sendRequest(url: string, method: string = "GET", data: any = {}): any {
this.logRequest(method, url, data);
let httpParams = new HttpParams({ fromObject: data });
let httpOptions = { withCredentials: true, body: httpParams };
let result;
switch(method) {
case "GET":
result = this.http.get(url, httpOptions);
break;
case "PUT":
result = this.http.put(url, httpParams, httpOptions);
break;
case "POST":
result = this.http.post(url, httpParams, httpOptions);
break;
case "DELETE":
result = this.http.delete(url, httpOptions);
break;
}
return result
.toPromise()
.then((data: any) => {
return method === "GET" ? data.data : data;
})
.catch(e => {
throw e && e.error && e.error.Message;
});
}
logRequest(method: string, url: string, data: object): void {
var args = Object.keys(data || {}).map(function(key) {
return key + "=" + data[key];
}).join(" ");
var time = formatDate(new Date(), "HH:mm:ss");
this.requests.unshift([time, method, url.slice(URL.length), args].join(" "))
}
clearRequests() {
this.requests = [];
}
}
@NgModule({
imports: [
BrowserModule,
DxDataGridModule,
DxSelectBoxModule,
DxButtonModule,
HttpClientModule
],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
platformBrowserDynamic().bootstrapModule(AppModule);
::ng-deep #grid {
height: 440px;
}
::ng-deep .options {
padding: 20px;
margin-top: 20px;
background-color: rgba(191, 191, 191, 0.15);
}
::ng-deep .caption {
margin-bottom: 10px;
font-weight: 500;
font-size: 18px;
}
::ng-deep .option {
margin-bottom: 10px;
}
::ng-deep .option > span {
position: relative;
top: 2px;
margin-right: 10px;
}
::ng-deep .option > .dx-widget {
display: inline-block;
vertical-align: middle;
}
::ng-deep #requests .caption {
float: left;
padding-top: 7px;
}
::ng-deep #requests > div {
padding-bottom: 5px;
}
::ng-deep #requests > div:after {
content: "";
display: table;
clear: both;
}
::ng-deep #requests #clear {
float: right;
}
::ng-deep #requests ul {
list-style: none;
max-height: 100px;
overflow: auto;
margin: 0;
}
::ng-deep #requests ul li {
padding: 7px 0;
border-bottom: 1px solid #dddddd;
}
::ng-deep #requests ul li:last-child {
border-bottom: none;
}
// In real applications, you should not transpile code in the browser. You can see how to create your own application with Angular and DevExtreme here:
// https://js.devexpress.com/Documentation/Guide/Angular_Components/Getting_Started/Create_a_DevExtreme_Application/
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]
};
System.config(window.config);
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<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=1.0" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.common.css" />
<link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/21.1.4/css/dx.light.css" />
<script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
<script src="https://unpkg.com/zone.js@0.10.2/dist/zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.21.3/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app').catch(console.error.bind(console));
</script>
</head>
<body class="dx-viewport">
<div class="demo-container">
<demo-app>Loading...</demo-app>
</div>
</body>
</html>