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Paste to upload

The uploader component allows you to upload the files using the select or drop files option from the file explorer. It also supports pasting to upload the image files. You can upload any currently copied images in the clipboard.

When you paste the image, it will be saved in the server with the filename as image.png. The file name can be renamed in the server end. You can generate a random name for the file name using getUniqueID method. Refer to the following example.

Source
Preview
index.tsx
import { getUniqueID } from '@syncfusion/ej2-base';
import { UploaderComponent, UploadingEventArgs } from '@syncfusion/ej2-react-inputs';
import * as React from 'react';
import * as ReactDOM from "react-dom";

export default class App extends React.Component<{}, {}> {
    public path: object = {
        removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove',
        saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save'
    }
    public onUploadBegin(args: UploadingEventArgs): void {
        // check whether the file is uploading from paste.
        if (args.fileData.fileSource === 'paste') {
            const newName: string = getUniqueID(args.fileData.name.substring(0, args.fileData.name.lastIndexOf('.'))) + '.png';
            args.customFormData = [{'fileName': newName}];
        }
    }
    public render(): JSX.Element{
        return (
            <UploaderComponent autoUpload={false}
            asyncSettings={this.path} uploading={this.onUploadBegin = this.onUploadBegin.bind(this)} />);
    }
}

ReactDOM.render(<App />, document.getElementById('fileupload'));

Save action for Paste upload

public void Save()
{
    var httpPostedFile = System.Web.HttpContext.Current.Request.Files["UploadFiles"];
    var fileSave = System.Web.HttpContext.Current.Server.MapPath("UploadedFiles");
    var fileSavePath = Path.Combine(fileSave, httpPostedFile.FileName);
    if (!System.IO.File.Exists(fileSavePath))
    {
        httpPostedFile.SaveAs(fileSavePath);
        var newName = System.Web.HttpContext.Current.Request.Form["fileName"];
        var filePath = Path.Combine(fileSavePath.Substring(0, fileSavePath.LastIndexOf("\\")), newName);
        // Rename the file
        System.IO.File.Move(fileSavePath, newName);
        HttpResponse Response = System.Web.HttpContext.Current.Response;
        Response.Clear();
        Response.ContentType = "application/json; charset=utf-8";
        Response.StatusDescription = fileSavePath;
        Response.End();
    }
}

Directory upload

The uploader component allows you to upload all files in the folders to server by using the directoryUpload property. When this property is enabled, the uploader component processes the files by iterating through the files and sub-directories in a directory. It allows you to select only folders instead of files to upload.

The directory upload is available only in browsers that supports HTML5 directory. The uploader will process directory upload by dragging and dropping in the Edge browser. Refer to the following example to upload files to the server.

Source
Preview
index.tsx
import { UploaderComponent } from '@syncfusion/ej2-react-inputs';
import * as React from 'react';
import * as ReactDOM from "react-dom";

export default class App extends React.Component<{}, {}> {
  public path: object = {
    removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove',
    saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save'
  }
  public render(): JSX.Element {
    return (
        <UploaderComponent asyncSettings={this.path} directoryUpload={true} />);
  }
}

ReactDOM.render(<App />, document.getElementById('fileupload'));

Save action for directory upload

public void Save() {
    var httpPostedFile = HttpContext.Current.Request.Files["UploadFiles"];
    var fileSave = HttpContext.Current.Server.MapPath("UploadedFiles");
    // split the folders by using file name
    string[] folders = httpPostedFile.FileName.Split('/');
    string fileSavePath = "";
    if (folders.Length > 1)
    {
        for (var i = 0; i < folders.Length - 1; i++)
        {
            var newFolder = Path.Combine(fileSave, folders[i]);
            // create folder
            Directory.CreateDirectory(newFolder);
            fileSave = newFolder;
        }
        fileSavePath = Path.Combine(fileSave, folders[folders.Length - 1]);
    }
    else
    {
        fileSavePath = Path.Combine(fileSave, httpPostedFile.FileName);
    }
    if (!System.IO.File.Exists(fileSavePath))
    {
        // save file in the corresponding server location
        httpPostedFile.SaveAs(fileSavePath);
        HttpResponse Response = System.Web.HttpContext.Current.Response;
        Response.Clear();
        Response.ContentType = "application/json; charset=utf-8";
        // Sending the file path to client side
        Response.StatusDescription = fileSavePath;
        Response.End();
    }
}

Drag and drop

The uploader component allows you to drag and drop the files to upload. You can drag the files from file explorer and drop into the drop area. By default, the uploader component act as drop area element. The drop area gets highlighted when you drag the files over drop area.

Custom drop area

The uploader component allows you to set external target element as drop area using the dropArea property. The element can be represented as HTML element or element’s id.

Source
Preview
index.tsx
style.css
import * as React from 'react';
import * as ReactDOM from "react-dom";
import { UploaderComponent } from '@syncfusion/ej2-react-inputs';

export default class App extends React.Component<{}, {}> {
    public uploadObj: UploaderComponent;
    public path: object = {
        removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove',
        saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save'
    }
    private dropAreaRef: HTMLElement;
    public onCreated(): void {
        this.uploadObj.dropArea = this.dropAreaRef;
        this.uploadObj.dataBind();
    }

    public render(): JSX.Element {
        return (
            <div id='container'>
                <div id='droparea' ref={dropAreaEle => this.dropAreaRef = dropAreaEle!}>
                Drop files here to upload
                </div>
                <div id='uploadfile'>
                    <UploaderComponent autoUpload={false}  ref = {upload => {this.uploadObj = upload !}} created={this.onCreated = this.onCreated.bind(this)} asyncSettings={this.path} />
                </div>
            </div>);
    }
}

ReactDOM.render(<App />, document.getElementById('fileupload'));
#loader {
    color: #008cff;
    height: 40px;
    left: 45%;
    position: absolute;
    top: 45%;
    width: 30%;
}
  .fileupload {
    margin: 20px auto;
    width: 400px;
  }
  #droparea {
    padding: 50px 25px;
    margin: 30px auto;
    border: 1px solid #c3c3c3;
    text-align: center;
    width: 20%;
    display: inline-flex;
  }
  .e-file-select,
  .e-file-drop {
    display: none;
  }
  body .e-upload-drag-hover {
    outline: 2px dashed brown;
  }
  #uploadfile {  
    width: 60%;
    display: inline-flex;
    margin-left: 5%;
  }

Customize drop area

You can customize the appearance of drop area by overriding the default drop area styles. The class “” and “” is available to handle this customization.

Source
Preview
index.tsx
style.css
import { select } from '@syncfusion/ej2-base';
import { UploaderComponent } from '@syncfusion/ej2-react-inputs';
import * as React from 'react';
import * as ReactDOM from "react-dom";

export default class App extends React.Component<{}, {}> {
    public uploadObj: UploaderComponent;
    public path: object = {
        removeUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove',
        saveUrl: 'https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save'
    }
    private dropAreaRef: HTMLElement;
    public onCreated(): void {
        this.uploadObj.dropArea = this.dropAreaRef;
        this.uploadObj.dataBind();
    }

    public browseClick(args: React.MouseEvent): void {
        const wrapperEle: HTMLElement = select('.e-file-select-wrap button', document) as HTMLElement;
        wrapperEle.click();
        args.preventDefault();
    }
    public render(): JSX.Element {
        return (
            <div id='container'>
                <div id='dropArea'>
                    <span id='drop'> Drop files here or <a href="" id='browse' onClick={this.browseClick=this.browseClick.bind(this)}><u>Browse</u></a> </span>
                    <UploaderComponent asyncSettings={this.path}  ref = {upload => {this.uploadObj = upload!}} created={this.onCreated = this.onCreated.bind(this)}/>
                </div>
            </div>
        );
    }
}

ReactDOM.render(<App />, document.getElementById('fileupload'));
#loader {
    color: #008cff;
    height: 40px;
    left: 45%;
    position: absolute;
    top: 45%;
    width: 30%;
}
.e-file-select-wrap {
    display: none;
}
#dropArea .e-upload {
    border: 0;
    margin-top: 15px;
}
#drop {
    padding-left: 30%;
}
#dropArea {
    min-height: 18px;
    border: 1px dashed #c3c3cc;
    padding-top: 15px;
    margin: 20px auto;
    width: 400px;
    height: auto; 
    overflow: auto
}

See Also