I am trying to upload file using selenium WebDriver,

There is one popwindow which is having 'Browse' button, after click on 'Browse' it opens file from windows.

<http://i.stack.imgur.com/wHYES.png>

```
{
      //Switch focus on pop window
      String popupHandle = driver.getWindowHandle();
      WebDriver popup;
      popup = driver.switchTo().window(popupHandle);

      //Click on 'Browse Files' button.
      Thread.sleep(5000);
      WebElement filebrowse = driver.findElement(By.id("browse-files"));
      filebrowse.sendKeys("C:/Users/logo.jpg");
 }

```

I want to upload single as well as multiple files,Is there any other way to select multiple file from window?