How to creates a custom file uploader component that allows multiple files of JPG, PNG, PDF to be upload in object Uses of 'lightning-file-upload' elements in Salesforce Lightning Web Component -- LWC

Hey guys, today in this post we are going to learn about How to creates a custom file uploader component that allows multiple files of JPG, PNG, PDF to be upload in object Uses of ‘lightning-file-upload’ elements in Salesforce Lightning Web Component — LWC .

A lightning-file-upload component provides an easy and integrated way for users to upload multiple files. You can configure the file uploader to accept specific file types, and the file types are filtered in the user’s file browser. To upload files using lightning-file-upload, you can:

Select a file on your system by clicking the button to open the system’s file browser
Drag a file from your system into the file selector dropzone

To associate an uploaded file to a record, specify the record-id attribute. Uploaded files are available in Files Home under the Owned by Me filter and on the record’s Attachments related list that’s on the record detail page. If you don’t specify the record-id attribute, the file is private to the uploading user.

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Although all file formats that are supported by Salesforce are allowed, you can restrict the file formats using the accept attribute.

The button label is “Upload Files” by default. Use the label attribute to add a descriptive label above the Upload Files button.

This example creates a file uploader that allows multiple PDF and PNG files to be uploaded. To learn more Click Here

Files we used in this post example

lwcFileUpload.html	LWc HTML File	Template HTML file to upload files in Salesforce Lightning Web Component (LWC)
lwcFileUpload.js	LWC JavaScript File	It’s hold a javascript on uploadFiledAction function to upload filese in Salesforce.
lwcFileUpload.js-meta.xml	XML Meta File	It is used to where this lightning web component file you want to display as like lightning__AppPage, lightning__RecordPage, lightning__HomePage.

Don’t forget to check out:- How to display upload Image if a record existing an attachment in lightning component. Click Here For More Information

Final Output

You can download file directly from github by Click Here.

Other related post that would you like to learn in Salesforce

Find the below steps:-

Create Lightning Web Component HTML

Step 1:- Create Lightning Web Component HTML ➡ lwcFileUpload.html

SFDX:Lightning Web Component ➡ New ➡ lwcFileUpload.html

lwcFileUpload.html [Lightning Web Component HTML]

```
   <template>
```

    <lightning-card title="How to upload file & attaching in Lightning Web Component -- LWC" icon-name="custom:custom18" size="small">

        <div class="slds-p-around_medium">

```
            <lightning-file-upload
```
```
            label="Attach File"
```
```
            name="fileUploader"
```
```
            accept={acceptedFileItem}
```
```
            record-id={myRecordId}
```

            onuploadfinished={uploadFiledAction}

```
            multiple>
```
```
    </lightning-file-upload>
```
```
        </div>
```
```
<br/><br/>
```
```
   
```

<div style="border:1px #ddd solid; padding:10px; background:#eee; margin:40px 0;">

```
 
```

            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/05/thumbsUpLike.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:16px; font-style:italic; display:inline-block; margin-right:5px;">Don't forget to check out:-</span><a href="https://www.w3web.net/" target="_blank" rel="noopener noreferrer" style="text-decoration:none;" data-aura-rendered-by="440:0">An easy way to learn step-by-step online free Salesforce tutorial, To know more Click  <span style="color:#ff8000; font-size:18px;" data-aura-rendered-by="442:0">Here..</span></a></strong></p>

```
 
```
```
            <br/><br/>
```

            <p data-aura-rendered-by="435:0"><img src="https://www.w3web.net/wp-content/uploads/2021/07/tickMarkIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;" data-aura-rendered-by="436:0"><strong data-aura-rendered-by="437:0"><span style="font-size:17px; font-style:italic; display:inline-block; margin-right:5px; color:rgb(255 128 0);">You May Also Like →</span> </strong></p>

            <div style="display:block; overflow:hidden;">

                <div style="width: 50%; float:left; display:inline-block">

                    <ul style="list-style-type: square; font-size: 16px; margin: 0 0 0 54px; padding: 0;">

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```
                    </ul>
```
```
            </div>
```
```
 
```

            <div style="width: 50%; float:left; display:inline-block">

                    <ul style="list-style-type: square; font-size: 16px; margin: 0 0 0 54px; padding: 0;">

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```
                    </ul>
```
```
                </div>
```

               <div style="clear:both;"></div>

```
               <br/>
```

                <div class="youtubeIcon">

                    <a href="https://www.youtube.com/channel/UCW62gTen2zniILj9xE6LmOg" target="_blank" rel="noopener noreferrer"><img src="https://www.w3web.net/wp-content/uploads/2021/11/youtubeIcon.png" width="25" height="25" style="vertical-align:top; margin-right:10px;"/> <strong>TechW3web:-</strong> To know more, Use this <span style="color: #ff8000; font-weight: bold;">Link</span> </a>

```
                </div>
```
```
    </div>
```
```
 
```
```
</div>
```
```
 
```
```
  
```
```
 
```
```
    </lightning-card>
```
```
</template>
```

Create Lightning Web Component Javascript

Step 2:- Create Lightning Web Component Javascript ➡ lwcFileUpload.js

SFDX:Lightning Web Component ➡ New ➡ lwcFileUpload.js

lwcFileUpload.js [LWC JavaScript File]

   import { LightningElement, api } from 'lwc';

import {ShowToastEvent} from 'lightning/platformShowToastEvent';

export default class LwcFileUpload extends LightningElement {

```
    @api
```
```
    myRecordId;
```
```
 
```
```
    get acceptedFileItem() {
```

        return ['.pdf', '.png', '.pdf'];

```
    }
```
```
 
```
```
    uploadFiledAction(event) {
```

        // Get the list of uploaded files

        const uploadedFiles = event.detail.files;

       // alert("No. of files uploaded : " + uploadedFiles.length);

        const toastEvent = new ShowToastEvent({

            title:'Files uploaded successfully',

            message:'No. of files uploaded ' + uploadedFiles.length,

```
            variant:'success',
```
```
        })
```
```
        this.dispatchEvent(toastEvent);
```
```
    }
```
```
}
```

Create Lightning Web Component Meta XML

Step 3:- Create Lightning Web Component Meta XML ➡ lwcFileUpload.js-meta.xml

SFDX:Lightning Web Component ➡ New >> lwcFileUpload.js-meta.xml

lwcFileUpload.js-meta.xml [LWC Meta Data XML]

   <?xml version="1.0" encoding="UTF-8"?>

<LightningComponentBundle xmlns="http://soap.sforce.com/2006/04/metadata">

```
    <apiVersion>45.0</apiVersion>
```
```
    <isExposed>true</isExposed>
```
```
    <targets>
```

        <target>lightning__AppPage</target>

        <target>lightning__RecordPage</target>

        <target>lightning__HomePage</target>

```
      </targets>
```
```
</LightningComponentBundle>
```

Salesforce LWC, Aura Lightning Tutorial:- To learn step-by-step, Use this Link

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FAQ (Frequently Asked Questions)

How do I upload files in LWC?

Inside openfileUpload method, we use browser FileReader API to generate the data stream. On click of the submit button, handleClick method gets called, and it calls the apex method uploadFile .

Where is attachment object in Salesforce?

An Attachment record in Salesforce is a record of the Attachment Object which is then associated with a parent record. Attachments appear in the Notes & Attachments Related List.

What is CRM content in Salesforce?

Salesforce CRM content feature helps organize, share, search, and manage content within your organization and across key areas of Salesforce.

Vijay Kumar

Hi, This is Vijay Kumar behind the admin and founder of w3web.net. I am a senior software developer and working in MNC company from more than 8 years. I am great fan of technology, configuration, customization & development. Apart of this, I love to write about Blogging in spare time, Working on Mobile & Web application development, Salesforce lightning, Salesforce LWC and Salesforce Integration development in full time. [Read full bio] | | The Sitemap where you can find all published post on w3web.net

How to creates a custom file uploader component that allows multiple files of JPG, PNG, PDF to be upload in object Uses of ‘lightning-file-upload’ elements in Salesforce Lightning Web Component — LWC | How to upload multiple files in lwc