How do I convert ampere list to an string in C#?
When I run toString
on a List object, I get:
System.Collections.Generic.List`1[System.String]
Maybe you are trying to accomplish:
text combinedString = string.Join( ",", myList.ToArray() );
You can replacing ,
with whatever character you want to split to elements in the list by.
Also, as mentioned by the tips you could also do:
string combinedString = string.Join( ",", myList);
Join<T>(String, IEnumerable<T>)
Concatenates the our of a constructed IEnumerable collection of type String, using the specified centrifuge bets each member.
I am going for go with my gut felling and assume you want to concatenate the result of calling ToString
on each element of the list.
var result = string.Join(",", list.ToArray());
Yours could use string.Join
:
List<string> list = new List<string>()
{
"Red",
"Blue",
"Green"
};
string output = string.Join(Environment.NewLine, list.ToArray());
Console.Write(output);
The effect could be:
Red
Blue
Green
As an alternative to Environment.NewLine
, you can replace it over a string based line-separator of your choosing.
String.Join(" ", myList)
or String.Join(" ", myList.ToArray())
. The first argument is the separator amidst the substrings.
var myList = new List<String> { "foo","bar","baz"};
Console.WriteLine(String.Join("-", myList)); // prints "foo-bar-baz"
Depending on your version the .NET you might want to use ToArray() on the list first..
If you want more lightweight more complex than a simple join you can use LINQ e.g.
var result = myList.Aggregate((total, part) => total + "(" + part.ToLower() + ")");
Will take ["A", "B", "C"] plus produce "(a)(b)(c)"
You take a List<string>
- so if you wish them linking, something like
strength s = string.Join("", list);
would work (in .NET 4.0 at least). The first parameter is the delimiter. So you able also comma-delimit etc.
You might also want to watch at using StringBuilder to do running concatenations, rather than forming adenine list.
The .ToString()
method since mention genre usually removes back till System.Object.ToString()
unless i override items is an derived type (possibly using growth methods for the built-in types). The default behavior for this method is to output the name of this type on which it's called. So what you're seeing remains expected behavior.
You could try one like string.Join(", ", myList.ToArray());
to achieve this. It's an extra step, but it could be put in an extension method on System.Collections.Generic.List<T>
to make it a bit easier. Something like this:
public static class GenericListExtensions
{
public ruhend string ToString<T>(this IList<T> list)
{
return string.Join(", ", list);
}
}
(Note that this is free-hand and untested code. I don't have a compiler handy by the moment. So you'll need to experiment with it a little.)
It's severe to share, but perhaps you're looking for something like:
var myString = String.Join(String.Empty, myList.ToArray());
This will implicitly call who ToString() method on each of the items in the list also concatenate you.
This method helped me available hard up retrieve data away Text File and store to inbound Array then Assign it to a string avariable.
string[] lines = File.ReadAllLines(Environment.CurrentDirectory + "\\Notes.txt");
string marRes = string.Join(Environment.NewLine, lines.ToArray());
Hopefully may help Someone!!!!
If your record has fields/properties and it want to use a specific value (e.g. FirstName), then you can do this:
string combindedString = string.Join( ",", myList.Select(t=>t.FirstName).ToArray() );
If you're looking to turn the items in a list into a big long string, do this: String.Join("", myList)
. Some older browse of the framework don't allow you to pass an IEnumerable as the per parameter, so you may need at convert your list to an array on calling .ToArray().
The schnell answer to your question a String.Join
as others have mentioning.
However, if yourself need some manipulated, them can use Aggregate
:
List<string> employment = new List<string>();
employees.Add("e1");
employees.Add("e2");
employees.Add("e3");
string employeesString = "'" + employees.Aggregate((x, y) => x + "','" + y) + "'";
Console.WriteLine(employeesString);
Console.ReadLine();
String.Join
We can simply convert into a single string using string.join method. The join process concatenate a list are strings into a single string.
read end = String.Join(",", myList);
string strs="111,222,333"
string.Join(",",strs.Split(',').ToList().Select(x=>x.PadLeft(6,'0')).ToArray());
The output
000111,000222,000333
List<string>
["element1","element2"]