Angular LoadIndicator - Show and Hide Using the API

NOTE
In this article, the Button UI component is used to demonstrate how to show and hide the LoadIndicator. This choice is made for purely demonstrational purposes, and you can do the same operations using another UI component following the same guidelines.

To specify whether the LoadIndicator is shown, change the visible property.

jQuery
HTML
JavaScript
<div id="loadIndicatorContainer"></div>
<div id="buttonContainer"></div>
$(function() {
    const loadIndicator =  $("#loadIndicatorContainer").dxLoadIndicator({
        visible: false      
    }).dxLoadIndicator("instance");

    $("#buttonContainer").dxButton({
        text: "Toggle the LoadIndicator", 
        onClick: function () {
            const isLoadIndicatorVisible = loadIndicator.option("visible");
            loadIndicator.option("visible", !isLoadIndicatorVisible);
        } 
    });
});
Angular
HTML
TypeScript
<dx-load-indicator
    [(visible)]="isLoadIndicatorVisible">
</dx-load-indicator>
<dx-button
    text="Toggle the LoadIndicator"
    (onClick)="isLoadIndicatorVisible = !isLoadIndicatorVisible">
</dx-button>
import { DxLoadIndicatorModule, DxButtonModule } from "devextreme-angular";
// ...
export class AppComponent {
    isLoadIndicatorVisible: boolean = true;
}
@NgModule({
    imports: [
        // ...
        DxLoadIndicatorModule,
        DxButtonModule
    ],
    // ...
})
Vue
<template>
    <div>
        <DxLoadIndicator
            v-model:visible="isLoadIndicatorVisible"
        />
        <DxButton
            text="Toggle the LoadIndicator"
            @click="toggleLoadIndicator"
        />
    </div>
</template>

<script>
import 'devextreme/dist/css/dx.light.css';

import { DxLoadIndicator } from 'devextreme-vue/load-indicator';
import { DxButton } from 'devextreme-vue/button';

export default {
    components: {
        DxLoadIndicator,
        DxButton
    },
    data() {
        return {
            isLoadIndicatorVisible: false
        };
    },
    methods: {
        toggleLoadIndicator(e) {
            this.isLoadIndicatorVisible = !this.isLoadIndicatorVisible;
        }
    }
}
</script>
React
import React from 'react';
import 'devextreme/dist/css/dx.light.css';

import { LoadIndicator } from 'devextreme-react/load-indicator';
import { Button } from 'devextreme-react/button';

class App extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            isLoadIndicatorVisible: false
        };
        this.handleButtonClick = this.handleButtonClick.bind(this);
    }

    handleButtonClick() {
        const value = this.state.isLoadIndicatorVisible;

        this.setState({
            isLoadIndicatorVisible: !value
        });
    }

    render() {
        return (
            <div>
                <LoadIndicator
                    visible={this.state.isLoadIndicatorVisible}
                />
                <Button
                    text="Toggle the LoadIndicator"
                    onClick={this.handleButtonClick}
                />
            </div>
        );
    }
}

export default App;
ASP.NET MVC Controls
Razor C#
Razor VB
@(Html.DevExtreme().LoadIndicator()
    .ID("loadIndicator")
    .Visible(false)
)

@(Html.DevExtreme().Button()
    .ID("button")
    .Text("Toggle the LoadIndicator")
    .OnClick(@<text>
        function () {
            const loadIndicator = $("#loadIndicator").dxLoadIndicator("instance");
            const isLoadIndicatorVisible = loadIndicator.option("visible");
            loadIndicator.option("visible", !isLoadIndicatorVisible);
        } 
    </text>)
)
@(Html.DevExtreme().LoadIndicator() _
    .ID("loadIndicator") _
    .Visible(False)
)

@(Html.DevExtreme().Button() _
    .ID("button") _
    .Text("Toggle the LoadIndicator") _
    .OnClick("button_click")
)

<script>
    function button_click() {
        const loadIndicator = $("#loadIndicator").dxLoadIndicator("instance");
        const isLoadIndicatorVisible = loadIndicator.option("visible");
        loadIndicator.option("visible", !isLoadIndicatorVisible);
    }
</script>
See Also
jQuery
Angular
Vue
React