IWebElementSubmit Method WebDriver
Submits this element to the web server.

Namespace: OpenQA.Selenium
Assembly: WebDriver (in WebDriver.dll) Version: 3.1.0
Syntax

void Submit()
Exceptions

ExceptionCondition
StaleElementReferenceExceptionThrown when the target element is no longer valid in the document DOM.
Remarks

If this current element is a form, or an element within a form, then this will be submitted to the web server. If this causes the current page to change, then this method will block until the new page is loaded.
See Also

Reference