Fehler beim Selektieren des Dropdown-Wertes in selen webdriver

Question

Von Dropdown kann ich den Wert aus Dropdown nicht auswählen.

HTML-Code:

<select id="ctl00_ContentPlaceHolder1_drp85" class="form-control select2-hidden-accessible" data-varindex="9" onchange="SetVariableValue('9', this, 'DESCENDANT - DROPDOWN')" name="ctl00$ContentPlaceHolder1$drp85" tabindex="-1" aria-hidden="true"> 
<option value="-1">--Select--</option> 
<option value="Please don't hesitate">Please don't hesitate </option> 
<option value="Please reach out to us">Please reach out to us</option> 
<option value="Remember we are here for you">Remember we are here for you</option> 
<option value="If you need help">If you need help</option> 
<option value="If you ever need additional help">If you ever need additional help</option> 
</select> 

Selen WebDriver Code:

WebElement dropdown = driver.findElement(By.id("ctl00_ContentPlaceHolder1_drp85")); 
selectbyindex=new Select(dropdown); 
selectbyindex.selectByIndex(1); 

Erste Ausnahme als:

Exception in thread "main" org.openqa.selenium.ElementNotVisibleException: element not visible: Element is not currently visible and may not be manipulated". 

Kann mir jemand helfen, wo ich Fehler mache?

Answer 1

warten nur für die Drop-down zuerst sichtbar zu sein, und wählen Sie dann:

new WebDriverWait(driver, TimeSpan.FromSeconds(45)).Until(ExpectedConditions.ElementIsVisible((By.Id("ctl00_ContentPlaceHolder1_drp85"))));