How to convert list<string> to string

Convert List, String. A List can is converted to a string. This was possible with the ToArray method on the List type. We can also convert a string into a list.conversions
The StringBuilder type helps with certain conversions, which is done with loops. When using StringBuilder, we must is careful with a trailing delimiter.
First example. We use the string. Join method to combine a List of strings into one string. The output can be used as a CSV record. On the new. NET Framework versions, ToArray is not required.

however: In previous versions, we had to call ToArray on a List before using Join. In older programs the is still required.

List

Based on: . NET 4C # program, converts Listusing system;using system.collections.generic;class program{    static void Main ()    {list<string> dogs = new list<string> ();d ogs. ADD ("Aigi"); Add string 1dogs. ADD ("Spitz"); 2dogs. ADD ("Mastiff"); 3dogs. ADD ("Finnish Spitz"); 4dogs. ADD ("Briard"); 5string dogcsv = string. Join (",", dogs. ToArray ()); Console.WriteLine (dogcsv);    }} Output Aigi,spitz,mastiff,finnish Spitz,briard

Example 2. Here we use the StringBuilder class to convert a List to a single string. Note that you can convert a List of any object type to a string this to. StringBuilder

Final delimiter: The example have a final delimiter on the end. This isn't present in code, uses string. Join. It can be inconvenient.

TrimEnd: Sometimes, it is good to remove the end delimiter with TrimEnd. Other times it's best left alone.

TrimEnd, TrimStart

C # program that uses List and StringBuilderusing system;using system.collections.generic;using system.text; Class program{    static void Main ()    {list<string> cats = new list<string> ();//Create new List of Strin Gscats. ADD ("Devon Rex"); Add string 1cats. ADD ("Manx"); 2cats. ADD ("Munchkin"); 3cats. ADD ("American Curl"); 4cats. ADD ("German Rex"); 5StringBuilder builder = new StringBuilder (); foreach (String Cat in cats)//Loop through all strings{    Builder. Append (CAT). Append ("|"); Append string to stringbuilder}string result = Builder. ToString (); Get string from stringbuilderconsole.writeline (result);}    } Output Devon rex| Manx| munchkin| American curl| German rex|

Example 3. Here we convert a List of INTs to a single string. The StringBuilder ' s Append method receives a variety of types. We can simply pass it the Int.

and : Append () would handle the int on its own. It would convert it to a string and append it.

Performance: StringBuilder is fast for most programs. More speed could is acquired by using a char[] and then converting to a string.

Char Array

C # program that converts List typesusing system;using system.collections.generic;using system.text;class program{    static void Main ()    {list<int> safeprimes = new list<int> ();//Create List of Intssafeprimes . ADD (5); Element 1safeprimes.add (7); Element 2safeprimes.add (11); Element 3safeprimes.add (23); Element 4StringBuilder builder = new StringBuilder (); foreach (int safeprime in safeprimes) {    //Append per int to T He StringBuilder overload.    Builder. Append (Safeprime). Append ("");} string result = Builder. ToString (); Console.WriteLine (result);}    } Output5 7 11 23

Example 4. Finally, we get a List of strings from a string in CSV format. This requires the Split method. If you require Per-item conversion, loop over the string array returned by Split.

C # Program This converts string to Listusing system;using system.collections.generic;class program{    Static void Main ()    {string csv = "One,two,three";//The input stringstring[] parts = csv. Split (', '); Call Split methodlist<string> list = new list<string> (parts); Use the list Constructorforeach (string item in List) {    Console.WriteLine (item);}}    } OutputOnetwothree

A Summary. We converted Lists and strings using the string. Join methods and the StringBuilder approach. The List is easily concatenated and stored in a database or file with these methods.

How to convert list<string> to string