th 624 - Waiting for a __dopostback call in Selenium with Webdriver

Waiting for a __dopostback call in Selenium with Webdriver

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th?q=How Do I Wait For A Javascript   dopostback Call Through Selenium And Webdriver - Waiting for a __dopostback call in Selenium with Webdriver

Waiting for a __dopostback call in Selenium with Webdriver can be a daunting task for any tester. This call is used extensively on many web pages and applications to trigger and handle server-side events. However, it can also pose a challenge in test automation, as it can cause issues with synchronization and cause tests to fail unexpectedly.But fear not! There are ways to ensure that your tests wait for __dopostback calls and handle them appropriately. In this article, we will dive into the intricacies of this call, how it works, and what it means for test automation. We will explore the different approaches you can take to handle this call in your tests, including explicit and implicit waits, JavaScript execution, and page refresh.If you’re interested in mastering the art of Selenium with Webdriver and want to learn how to handle __dopostback calls in your tests, this article is for you. So buckle up and get ready for an informative ride. By the end of this article, you’ll have a solid understanding of how to wait for __dopostback calls and avoid pitfalls in your test automation. Let’s get started!

th?q=How%20Do%20I%20Wait%20For%20A%20Javascript%20  dopostback%20Call%20Through%20Selenium%20And%20Webdriver - Waiting for a __dopostback call in Selenium with Webdriver
“How Do I Wait For A Javascript __dopostback Call Through Selenium And Webdriver” ~ bbaz


In test automation, waiting for a __dopostback call in Selenium with Webdriver can be challenging. Many testers face issues with this functionality and don’t know how to overcome them.

What is __dopostback call?

__dopostback is a Javascript function that framework uses to request server-side processing of events. Once the server finishes processing, it returns HTML that will be rendered on the user’s browser.

The Problem with Waiting for a __dopostback call

One of the significant challenges in test automation is knowing when a __dopostback call is finished. If you don’t know when it has completed, your test will fail.

Problem #1: Timing issues

When you trigger a __dopostback call, it may take some time for the server to process and return the response. This delay can cause timing issues, leading to test failures.

Problem #2: Synchronization

Synchronization is essential while using Selenium Webdriver. When waiting for a __dopostback call, you need to ensure that the page has finished loading before proceeding.

How to Wait for a __dopostback call in Selenium with Webdriver

Here are three ways you can wait for a __dopostback call to finish successfully:

1. Explicit Wait

Explicit waits are ideal when dealing with dynamic pages that change content over time. To use explicit wait, you have to set the amount of time you want to wait for an element to appear or become clickable.

2. Implicit Wait

Implicit waits are useful when pages take a long time to load. With an implicit wait, you specify how many seconds you want Selenium WebDriver to wait before throwing an exception.

3. Thread.Sleep()

Sleep is a hardcoded delay for an exact amount of time. Essentially what this means is that the test will pause for a set amount of time, even if the element or page loads faster than expected.

Comparison Table

Method Pros Cons
Explicit Wait – Specific wait time
– Waiting for a specific element
– Page can load faster or slower than expected
Implicit Wait – Easy to implement
– Set by default throughout the Test Execution
– Pages taking longer than the default timeout will lead to exceptions
– Can’t recognize a specific element
Thread.sleep() – Easy to understand and use
– Suitable for small tests
– Not suitable for longer waits
– Hardcoded delay


Knowing how to wait for a __dopostback call in Selenium with Webdriver is essential when performing test automation. There are three different approaches you can use, each with its advantages and disadvantages. It’s important to decide which approach best suits your testing needs. Ultimately, keep in mind that successful test automation requires patience, attention to detail, and a willingness to adapt to new solutions.

Dear visitors,

We hope you found our recent blog post on Waiting for a __dopostback call in Selenium with Webdriver without title informative and helpful. As we mentioned, dealing with dynamic webpages that use __dopostback can be quite challenging. With the tips and techniques we shared, we believe you’ll be better equipped to handle this scenario in your Selenium tests.

We encourage you to put what you’ve learned into practice and experiment with different approaches. By doing so, you’ll gain a fuller understanding of how Selenium and Webdriver work and how they can optimally be used to test your web applications.

Finally, we want to emphasize the importance of staying up-to-date with the latest tools and techniques in Selenium testing. As new challenges arise in web development, it’s essential to keep learning and adapting. We’re committed to sharing our knowledge and experience with you, and we welcome any feedback or questions you may have. Thank you for visiting our blog, and we look forward to connecting with you again soon.

When it comes to testing web applications with Selenium and Webdriver, one common issue that testers may face is waiting for a __dopostback call to finish before proceeding with the next test step. Here are some frequently asked questions about this topic:

  1. What is a __dopostback call?

    A __dopostback call is a JavaScript function that is used in ASP.NET web applications to post data back to the server without reloading the entire page. It is commonly used for updating portions of a page dynamically, such as after a user submits a form.

  2. Why do I need to wait for a __dopostback call?

    Since a __dopostback call involves sending data back to the server and updating the page asynchronously, it can take some time to complete. If you try to execute the next test step immediately after triggering a __dopostback call, your test may fail due to the page not being fully loaded yet. Therefore, it is important to wait for the call to finish before proceeding with the next step.

  3. How can I wait for a __dopostback call to finish?

    One way to wait for a __dopostback call to finish is to use the WebDriverWait class provided by Selenium. You can set a timeout for how long to wait, and specify a condition to check for when the call is finished. For example:

    • WebDriverWait wait = new WebDriverWait(driver, 10);
    • wait.until(ExpectedConditions.invisibilityOfElementLocated(;

    In this example, we wait for up to 10 seconds for an element with ID loading-spinner to become invisible, which indicates that the __dopostback call has finished.

  4. Are there any other ways to handle waiting for __dopostback calls?

    Yes, there are other techniques you can use, such as using the Thread.sleep() method to pause execution for a fixed amount of time. However, this is generally not recommended as it can lead to slower and less reliable tests. Using WebDriverWait with a specific condition is usually a better approach.