Develop Reference

Blazor File Download - How to show loading animation for CTA?

I have a "download file" button component in Blazor that when clicked, it calls an endpoint that returns a FileStream. The FileStream is then downloaded to the browser via JSInterop.
All of this works great. But if it's a big file, there's no clear indication or feedback that clicking the button has done anything. I assume that because my button is a call-to-action rather than a hyperlink, the browser has no native way of knowing to display the "Waiting..." animation like when clicking on a hyperlink.
Is my only choice to implement a custom spinner animation?

Handling Windows Form Popups in Selenium C#

Automation in Selenium C#!
Im writing a test which involves clicking a button and uploading a file from a local harddrive.
I want to be able to close the windows explorer pop up that shows, i know selenium cant handle this very well, i was wondering if anyone has an knowledge of this?
Thanks
Craig

No need to click on the browse button.
Simply SendKeys it the file path then perform the save/upload operation.
//browseButton here refers to the browse button element
browseButton.SendKeys(fileToBeUploadedPath);
saveButton.Click();

The pop up could be an Alert.
Check that code in c#
IAlert alert = driver.SwitchTo().Alert();
alert.Accept();

How to identify and handle windows form (Open File) loaded from a browser

Writing Selenium script to test action linked to a button located on a webpage. Clicking button opens a modal form (windows form) from which user is expected to select a file.
Selenium script handles with the execution of test script up to the moment when the modal form 'File Upload' (File Input) is opened.
Does anyone has any suggestion on how Selenium can recognize opened form, and close it?

Selenium is used to automate browser actions. Modal windows are not browsers. You will need something else.
AutoIt is a Windows-only possible solution.
Robot Framework is another possibility.
There are others ... do some research.

How to access a file browser opened by a WebBrowser control?

I am writing a C# WinForms application that fills a form automatically on an existing website.
Let's consider http://tinypic.com/ as an example to illustrate my problem.
When the user clicks the Browse button, a file browser dialog opens as a modal dialog. In my case, the modal window is opened from code and I own the form and the WebBrowser control.
How can I access this modal window programmatically and paste/enter my filename into it ?

I don't know particularly, but I do believe its possible (even if you have to hook the OS)
You might want to check TwebstLib for such functionality

C# ASP.NET Detect Download

I am maintaining a website written in C# with ASP.NET. At the bottom of a page is an iframe. When a user clicks a button, the source for that iframe is set with Javascript to a page on the server.
showLoadWidget();
document.getElementById("downloadFrame").src='SdrTrendDownload.aspx';
return false;
That page generates a file and allows the user to download it. Once the download file box pops up, I want to call hideLoadWidget() so the 'Loading Data...' overlay goes away. How do I detect when the download file box pops up?

You can't detect that in addition this get more complicated depending on their security setting for the zone detected for your site
I will suggest that you just wrap the call inside updatepanel and use the partial postback to trigger the download prompt and progress template for displaying the loading widget. Let .net and the browser deal with it.

You can't, much less the browsers (like Chrome) who actually don't pop open a download file dialog. What you should probably do is simply attach to the 'ready' or 'loaded' event on the page and hide the widget when that event occurs.

Tejs is correct. IE 9 doesn't do a modal dialog anymore either. What you can do is set up a download progress watcher and programmatically hide the overlay once the watcher sees data is being sent to the client.

Can you use a hidden HTML form element reporting a DOM event such as onload or onfocus? I set some of these hidden fields in formmail.php from tectite.com, which sends email from a page to a mailbox on the server.

Well, I don't think you can do that. "The Download File Box" is a browser feature. What you should do is call the hideLoadWidget() right after you call the download.