How to check if a string contains any element of a List<string>?

Question

I have an if statement, where I would like to check, if a string contains any item of a list<string>.

if (str.Contains(list2.Any()) && str.Contains(ddl_language.SelectedValue))
{
    lstpdfList.Items.Add(str);
}

Solution 1

The correct formulation is

list2.Any(s => str.Contains(s))

This is read as "does list2 include any string s such that str contains s?".

Solution 2

You could use this:

if (myList.Any(x => mystring.Contains(x)))
    // ....

Comments

[N K]

And in case, if a dropdown list's selected value equal with an item from the list , how the formulation would be ?

[N K]

And in case, if a dropdown list's selected value equal with an item from the list , how the formulation would be ?

[Waihon Yew]

@user1597284: If selectedValue is a string then list2.Contains(selectedValue). Take a look at the Enumerable class and all the extension methods it provides.

[T-Dog]

Is there any way to get the value of 's' after finding that 'str' contains 's'?

[Waihon Yew]

@T-Dog sure but you have to specify it better. Like what happens if there are multiple ss from the list contained inside str?

[Waihon Yew]

For example, if you replace Any with FirstOrDefault, the return value is going to be the first s that is contained in str or null if no such string exists in the list.