检查该值是否存在于下拉列表中

Question

I have a dropdown that contains Subjects.

What I did, I use the code below to get the values on that dropdown.

IList<IWebElement> allOptions = check.Options;

Then I declare a string that will handle all the values I have to verify if these values exist on that dropdown.

string[] subject = "Math", "Science", "History", "Calculus", etc...

I loop them to get how many subjects I have to check if they exist on the dropdown then verify it using Contains.

if (allOptions.Contains(subject[i]))
                {
                    exist = true;
                }

However, I am getting an error that cannot convert a string to OpenQA.Selenium.IWebElement.

Anyone has idea how to fix it?

Thank you.

Answer 1

You can use LINQ for this. Basically this code:

if (allOptions.Contains(subject[i]))
{
    exist = true;
}

Can be replaced by a single line:

exist = allOptions.Any(x => x.Text == subject[i]);

Basically this code just checks if any element in the allOptions list has Text that matches subject[i] . If true, exist is now true , if false exist is now false .

Answer 2

Indeed, you cannot do that directly. The IWebElement contains a string property named Text , which is what you need to filter on. Like so:

var foundSubjects = allOptions.Where(o => subject.Contains(o.Text)); 

If you just need to find out if ALL the options are found in the subject array, do:

var optionsAreValid = allOptions.All(o => subject.Contains(o.Text)); 

Alternatively you could use Any to determine if at least one option exists in the subject array:

var isThereAValidOption = allOptions.All(o => subject.Contains(o.Text)); 

Answer 3

Use the Text property of the WebElement . it may be work for you

Answer 4

Try looping through the IList<IWebElement> instead:

int subjectCount = 0;

foreach (IWebElement element in allOptions)
{
    if (subject.Contains(element.Text))
    {
        subjectCount++;
    }
}