Can you convert a List to an array in C#?

Posted on by Emilia Duggan

Can you convert a List to an array in C#?

A List can be converted to an array. The opposite conversion is also possible. In each conversion, the element types remain the same—strings remain strings. More complex methods can be implemented.

How to convert List to object array in C#?

List. Select(x => x as object). ToArray();

How to convert ArrayList into string array in C#?

Explanation of Code: Here, we are converting an ArrayList to Array of specified type i.e string type. For conversion, you have to use ToArray(Type) method along with typeof keyword. And then you have to explicitly cast it to the specified type. Here you can see the line of code, string[] str = (string[])mylist.

How to convert string array to string List in C#?

3. Using List. AddRange() method

  1. using System;
  2. using System. Collections. Generic;
  3. public class Example.
  4. public static void Main()
  5. int[] array = { 1, 2, 3, 4, 5 };
  6. List list = new List();
  7. list. AddRange(array);
  8. Console. WriteLine(String. Join(“,”, list));

What is ToArray in C#?

ToArray(Type) Copies the elements of the ArrayList to a new array of the specified element type. public: virtual Array ^ ToArray(Type ^ type); C# Copy.

What is toArray C#?

ToArray(Type) Copies the elements of the ArrayList to a new array of the specified element type.

How do I convert a list to an array in C?

C# Convert List to Array Use the ToArray and ToList methods to convert Lists and arrays. Convert List, array. A List can be converted to an array. The opposite conversion is also possible. In each conversion, the element types remain the same—strings remain strings.

How do you list to an array in Java?

List to array. 1 Step 1 We create a List and populate it with some strings. The List here can only hold strings (or null).#N#List 2 Step 2 Next we use ToArray on the List. To test it, we pass the string array to the Test () method. More

How do I add a string to an ArrayList?

A simple Google or search on MSDN would have done it. Here: ArrayList myAL = new ArrayList (); // Add stuff to the ArrayList. String [] myArr = (String []) myAL.ToArray ( typeof ( string ) );

How do I convert an array to a string?

You can use the fact that every array implements IEnumerable: string[] arr = ((IEnumerable)obj).Cast () .Select(x => x.ToString()) .ToArray(); This will box primitives appropriately, before converting them to strings.

Can you convert a list to an array in C#?

Posted on by Emilia Duggan

Can you convert a list to an array in C#?

A List can be converted to an array. The opposite conversion is also possible. In each conversion, the element types remain the same—strings remain strings. More complex methods can be implemented.

Can I convert list to string C#?

Convert a List to a String using delimiter in C#

  • Using String. Join() method.
  • Using Enumerable.Aggregate() method. Like the above method, LINQ provides the Aggregate() method, which can join elements of a list using a delimiter.
  • Using StringBuilder.

What is ToArray C#?

ToArray(Type) Copies the elements of the ArrayList to a new array of the specified element type.

Can we convert string array to string?

So how to convert String array to String in java. We can use Arrays. toString method that invoke the toString() method on individual elements and use StringBuilder to create String. We can also create our own method to convert String array to String if we have some specific format requirements.

How do you find if an array contains a specific string in C#?

Contains() is a string method. This method is used to check whether the substring occurs within a given string or not. It returns the boolean value. If substring exists in string or value is the empty string (“”), then it returns True, otherwise returns False.

How do I get the length of a list in C#?

Try this: Int32 length = yourList. Count; In C#, arrays have a Length property, anything implementing IList (including List ) will have a Count property.

How do I convert a list to string in terraform?

2 Answers

  1. Transform the list to add the quotes: [for s in var. names : format(“%q”, s)]
  2. Join that result using , as the delimiter: join(“, “, [for s in var. names : format(“%q”, s)])
  3. Add the leading and trailing markers: “[ ${join(“,”, [for s in var. names : format(“%q”, s)])} ]”

How do I log a list in C#?

How to print all elements of a list in C#

  1. var months = new List(); months. Add(“January”); months. Add(“February”);
  2. for(int i=0;i
  3. months. ForEach(p => Console. WriteLine(p));
  4. months. ForEach(Console. WriteLine);
  5. Console. WriteLine(string. Join(“, “, months));

How do you check if a string exists in a string C#?

To check if a string str contains specified substring value , or say if specified substring is present in the string, use C# String. Contains(String) method. Call Contains() method on the string str and pass the substring value as argument. Contains() method returns True if string str contains the substring value .