如何使用 selenium c# webdriver 重命名下载的文件

Question

In my web application which has some automation process to download the files from the website. To achieve that I used selenium c# chrome driver.

Sample code snippets

public void Download(string name,string pass)
{
    try
    {
        ChromeOptions options = new ChromeOptions();
        options.AddArguments("--proxy-server=http://192.168.5.62:8095");
        options.AddUserProfilePreference("safebrowsing.enabled", true);
        options.AddUserProfilePreference("disable-popup-blocking", "true");
        options.AddUserProfilePreference("download.default_directory",@"C:\Temp");

        using (var driver = new ChromeDriver(HostingEnvironment.ApplicationPhysicalPath, options)){

            //driver.findElement(By.xpath("//a/u[contains(text(),'Re-Submit')]")).click();
            driver.FindElementById("save").Click();                               
        }              
    }
    catch (Exception ex)
    {       
        Logger.LogWriter("LAS", ex, "CusDataLogic", "Download");
    }
}

above code (not complete code) works fine and save file properly. But I need to rename that file downloading or after download. Have any possible way to rename that file?

Edited: Please don't mark this as a duplicate. I'm asking for C#, not python. I saw that question too. but it not helped to me

Answer 1

watching directory is not always good, because sometime saved filename is different than filename in URL.

go to chrome download page and loop until all download complete, you can see below how to select special element #shadow-root with CSS selector

using (var driver = new ChromeDriver(HostingEnvironment.ApplicationPhysicalPath, options)))
{
    //driver.findElement(By.xpath("//a/u[contains(text(),'Re-Submit')]")).click();
    driver.FindElementById("save").Click();

    // wait 5 second until download started
    Thread.Sleep(5000);

    // Go to chrome download page
    driver.Navigate().GoToUrl("chrome://downloads/");
    string oldName = "";
    bool downloadcomplete = false;
    string cssNames = "downloads-manager /deep/ downloads-item /deep/ [id='name']";
    string cssDlProgress = "downloads-manager /deep/ downloads-item /deep/ [class*='show-progress']";

    while (!downloadcomplete)
    {
        var progressElements = driver.FindElements(By.CssSelector(cssDlProgress));
        // check until no download progress bar
        if (progressElements.Count() == 0)
        {
            oldName = driver.FindElement(By.CssSelector(cssNames)).Text;
            downloadcomplete = true;
        }
        else
        {
            // download still in progress, wait.
            Thread.Sleep(1000);
        }
    }
    // download complete
    // remove downloaded file
    driver.FindElement(By.CssSelector("downloads-manager /deep/ downloads-item /deep/ [id='remove']")).Click();
    // rename
    File.Move(@"C:\Temp\" + oldName, @"C:\Temp\newname.ext");
}

Answer 2

The Snippet Below Will wait Until File downloaded Then return FilePath I Wrote this as an extension method :

public static string GetDonwloadedFileName(this IWebDriver driver)
{
    IJavaScriptExecutor js = (IJavaScriptExecutor)driver;
    js.ExecuteScript("window.open()");
    var allWinowHandles = driver.WindowHandles;
    foreach (var winHandle in allWinowHandles)
    {
        //Switch to second window
        if (!winHandle.Equals(driver.CurrentWindowHandle))
        {
            driver.SwitchTo().Window(winHandle);
        }
    }
    // navigate to chrome downloads
    driver.Navigate().GoToUrl("chrome://downloads");
    IJavaScriptExecutor downloadWindowExecutor = (IJavaScriptExecutor)driver;
    // Wait for Download till 100% completion
    double percentageProgress = (double)0;
    while (percentageProgress != 100)
    {
        try
        {
            percentageProgress = (long)downloadWindowExecutor.ExecuteScript("return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('#progress').value");
            Thread.Sleep(100);
        }
        catch (Exception)
        {
            break;
        }
    }

    string fileTitle = (string)downloadWindowExecutor.ExecuteScript("return document.querySelector('downloads-manager').shadowRoot.querySelector('#downloadsList downloads-item').shadowRoot.querySelector('#show').getAttribute('title')");
    downloadWindowExecutor.ExecuteScript("window.close()");
    return fileTitle;
}

Then You can use file Path to rename it to whatever you need