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Is there a way to convert a List(of Object) to a List(of String) in c# or vb.net without iterating through all the items? (Behind the scenes iteration is fine – I just want concise code)
Update: The best way is probably just to do a new select
myList.Select(function(i) i.ToString()).ToList(); or
myList.Select(i => i.ToString()).ToList(); 
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To convert a list to a string, use Python List Comprehension and the join() function. The list comprehension will traverse the elements one by one, and the join() method will concatenate the list's elements into a new string and return it as output.
We have 3 steps to convert an Object/List to JSON string: create the class. create toJson() method which returns a JSON object that has key/value pairs corresponding to all fields of the class. get JSON string from JSON object/List using jsonEncode() function.
//Assuming that your object is a valid List object, you can use: Collections. singletonList(object) -- Returns an immutable list containing only the specified object. //Similarly, you can change the method in the map to convert to the datatype you need.
We can use StringBuilder class to convert List to String. StringBuilder is the best approach if you have other than String Array, List. We can add elements in the object of StringBuilder using the append() method while looping and then convert it into string using toString() method of String class at the end.
Not possible without iterating to build a new list. You can wrap the list in a container that implements IList.
You can use LINQ to get a lazy evaluated version of IEnumerable<string> from an object list like this:
var stringList = myList.OfType<string>(); This works for all types.
List<object> objects = new List<object>(); List<string> strings = objects.Select(s => (string)s).ToList(); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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