无法识别硒C＃中的元素

Question

I am automating one of the commercial application and when I try to identify element using CSS,Xpath, ID, the element is being identified and shows as only one matching node in Firebug, but when I use that element for the test case automation.I see the below error

An exception of type 'OpenQA.Selenium.NoSuchElementException' occurred in WebDriver.dll but was not handled in user code

Please find the below html code for the application

<div id="QueryOption1" class="SelectedDiv" xmlns:local="#local-functions" xmlns:msxsl="urn:schemas-microsoft-com:xslt" name="QueryOptions">
<span>
<div>
<div class="leftSide">Subscriber ID:       </div>
<input id="Subscriber_ID" class="floatLeft" type="text" name="InsuranceNum" size="15"/>
</div>

Below is the options that I have tried

By.id("Subscriber_First_Name")

By.CssSelector("#QueryOption1 > div > #Subscriber_Last_Name")

By.Xpath("//input[@id='Subscriber_First_Name']")

By.CssSelector("input[id=Subscriber_First_Name][type=text]")

None of them worked for me to pass the value into the text box.PLease kindly help

Answer 1

why are you using id as :- Subscriber_First_Name while in your above HTML "id" is:-

By.id("QueryOption1")   // for first div
By.id("Subscriber_ID")   //for input tag

By.xpath("//input[@id='Subscriber_ID']")

OR you can use name locator also

By.name("QueryOptions")
By.name("InsuranceNum")

OR can set the value using JavascriptExecutor

JavascriptExecutor jse = (JavascriptExecutor)driver; 
jse.executeScript("$('#Subscriber_ID').attr('value','user')");

Answer 2

you can get it using IJavaScriptExecuter

 IJavaScriptExecutor jsExc = browser as IJavaScriptExecutor;
string textValue = jsExc.ExecuteScript("return document.getElementById('Subscriber_ID').value;").ToString();

Answer 3

I'm confused as to why the HTML you provided shows the id for the INPUT as Subscriber_ID and you are using Subscriber_First_Name in your code examples. That could be the issue but you didn't provide the actual code you are using so I'm not sure.

Try this

driver.FindElement(By.Id("Subscriber_ID")).SendKeys("some text goes into the text box");