how to create a custom cast explicit in c #?

how to create a custom cast explicit in c #? - c#

Have this code:
string abc = "123456";
To convert to int should I use convert:
int abcInt = Convert.ToInt32(abc);
The problem is that if not a number I have an exception see returning zero so my final code will look like:
try{ int abcInt = Convert.ToInt32(abc); }catch(Exception e){ int abcInt = 0; }
So you see that I decided to create a book that made me an object returning zero numeric without exception if it failed, so could keep most flexible programming without much junk code:
int abcInt = Libs.str.safeInt(abc);
The code is:
public int safeInt(object ob)
{
if ((ob == null) || (String.IsNullOrEmpty(ob.ToString())))
return 0;
try
{
return Convert.ToInt32(
System.Text.RegularExpressions.Regex.Replace(ob.ToString(), #"#[^Ee0-9\.\,]+#i", "").
ToString(CultureInfo.InvariantCulture.NumberFormat)
);
}
catch (FormatException e)
{
return 0;
}
}
But I want to go one step further and do something like this:
int abcInt = (safeInt)abc;
how to do?
Can not convert type 'string' to 'Libs.safeInt.safeInt'

You should just use Int32.TryParse:
int abcInt;
if(!Int32.TryParse(abc, out abcInt)) {
abcInt = 0;
}
// abcInt has been parsed to an int, or defaulted to zero
Note that this can be shortened to
int abcInt;
Int32.TryParse(abc, out abcInt);
if all that you want is the default value to be zero because:
When this method returns, contains the 32-bit signed integer value equivalent to the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is null, is not of the correct format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.
I actually recommend against writing it this way because now you can't distinguish between abc = "0" and abc = "garbage"; both with exhibit exactly the same behavior with the above two lines of code. With the initial version above (i.e., the if, you can distinguish the two cases if you need to; silently ignoring errors is generally a bad idea).
That said, if you absolutely are dying to know how to implement an explicit cast operator, you proceed like this:
class SafeInt32 {
private readonly int value;
public int Value { get { return this.value; } }
private readonly string source;
public string Source { get { return this.source; } }
private readonly bool successful;
public bool Successful { get { return this.successful; } }
public SafeInt32(string source) {
this.source = source;
this.successful = Int32.TryParse(source, out this.value);
}
public static explicit operator SafeInt32(string source) {
return new SafeInt32(source);
}
public static implicit operator int(SafeInt32 safeInt32) {
return safeInt32.Value;
}
}
Usage:
int abcInt = (SafeInt32)"123456";
Note that we had to define an explicit cast operator to cast a string to a SafeInt32, and an implicit cast operator to cast a SafeInt32 to an int to achieve your desired syntax. The latter is necessary so that the compiler can silently convert the result of (SafeInt32)"123456" to an int.
Again, I recommend against this; use Int32.TryParse.

You can leverage implicit and explicit operators to do what you want, yes. You can also use int.TryParse to avoid using exceptions for control flow.
public struct SafeInt
{
public int Value { get; private set; }
public static implicit operator int(SafeInt safeInt)
{
return safeInt.Value;
}
public static explicit operator SafeInt(string obj)
{
return new SafeInt() { Value = SafeParse(obj) };
}
public static int SafeParse(object value)
{
int output;
int.TryParse((value ?? "0").ToString(), out output);
return output;
}
}

I mean, you should use int.TryParse, but if you're dead-set on the cast syntax:
public class SafeInt
{
private int _value;
private SafeInt() {}
public static explicit operator SafeInt(string str)
{
int x;
int.TryParse(str, out x);
SafeInt si = new SafeInt();
si._value = x;
return si;
}
public static implicit operator int(SafeInt x)
{
return x._value;
}
public override string ToString()
{
return _value.ToString();
}
}
You can then use it like this:
int x = (SafeInt)"234234";

First, let me just go on record saying that you may not want to do this.
Silently ignoring problems like this can cause other types of problems, such as a customer asking "Why is this total over here always wrong?".
Having said that, let's see how you can do what you want before I give you a better option:
void Main()
{
int a = (SafeInt)"123";
a.Dump();
int b = (SafeInt)"xyz";
b.Dump();
}
public struct SafeInt
{
private readonly int _Value;
public SafeInt(int value)
{
_Value = value;
}
public SafeInt(int? value)
{
_Value = value ?? 0;
}
public int Value
{
get
{
return _Value;
}
}
public static implicit operator int(SafeInt s)
{
return s.Value;
}
public static implicit operator SafeInt(string s)
{
try
{
return new SafeInt(Convert.ToInt32(s));
}
catch (FormatException)
{
return new SafeInt();
}
}
}
This will print out:
123
0
Now, my advice is to stay away from this. Instead, use this:
void Main()
{
TryParse("123").Dump();
TryParse("xyz").Dump();
}
public static int TryParse(string s, int errorValue = 0)
{
int result;
if (int.TryParse(s, out result))
return result;
return errorValue;
}
Note that if you always want 0 as the value to return upon an error, there's even a much simpler way built into the system, this:
int value;
int.TryParse("123", out value);
Here we disregard the Boolean result from TryParse, because if TryParse fails, it'll set the parameter to 0.

I'd recommend that you do not do this. I find explicit and implicit conversions to be hard to discover, read, and use, compared to simpler static methods and/or constructors. Also, are you aware of the int.TryParse method? That might be a better solution for you:
public static int SafeInt(object value)
{
int i;
int.TryParse(value.ToString(), out i);
return i;
}
Or, more directly to answer your question, you can use explicit and implicit conversions on a SafeInt class to do this:
public class SafeInt
{
public int Value { get; set; }
public static implicit operator int(SafeInt si)
{
return si.Value;
}
public static explicit operator SafeInt(String str)
{
return new SafeInt { Value = Libs.str.safeInt(str) };
}
}
Use like:
int i = (SafeInt)"123";

Related

return expected value when called by variable name

I want to make a struct that when its value is set, you can call the value by the variable name.
struct A
{
int Value;
}
Main()
{
// Sets Value to 9
A Number = 9;
Console.Write(Number);
// output should be 9
}
I expect the output to be 9

You can optimize your code like this:
struct A
{
public int Value;
public A(int val)
{
Value = val;
}
public override string ToString()
{
return Value.ToString();
}
}
and use like you wanted:
// Sets Value to 9
A Number = new A(9);
Console.Write(Number);

To use exactly what you wrote A number = 9; Console.Write(Number); you first need to define an implicit assignment operator, and then you need to override the ToString() method to get the right output. Sample code:
struct A
{
public int Value;
public A(int value)
{
Value = value;
}
// This allows creating an instance of struct A by writing it as an assignment statement
static public implicit operator A(int value)
{
return new A(value);
}
public override string ToString()
{
return Value.ToString();
}
}
public static void Main()
{
A Number = 9;
Console.Write(Number);
}
Live demo here: https://dotnetfiddle.net/WZPsLX

Your struct misses accessors for Value
struct A
{
public int Value { get; set; }
}
Main()
{
A number = new A();
number.Value = 9;
Console.WriteLine(number.Value)
}

Adding to Peter B's answer, you could also define the opposite implicit conversion instead of ToString()
public static implicit operator int(A a)
{
return a.Value;
}

Property to set a type and return different type

I know that a property can be set as a single type and not to be changed once set, but is there a way to create a property or a property-like object that sets an int while returns a string?
I'm constantly creating variables like an int which will later on be used as string only and never to be used as int once set. So in that case i would always have to make a lot of conversions considering that it's not just one type to another.

Maybe something like
struct strint
{
private int i; // 0 by default
public static implicit operator strint(int value) {
return new strint { i = value };
}
public static implicit operator string(strint value) {
return value.i.ToString();
}
public static implicit operator int(strint value) {
return value.i;
}
}
Sample use:
strint a = 1;
a += 2; // 3
int i = a; // 3
string s = a; // "3"

When you need it only as a string and only once as integer (during initialization) go with the string-value:
int readonly _myProp;
string MyProp { get { return _myProp.ToString(); } }
MyClass(int theValue
{
this._myProp = theValue;
}
The readonly moreover ensures that a user can only set the value during intialization of your class.

Determining how an object is cast inside a method with Reflection

How could Reflection be used to determine the ways an object is cast from inside a method?
Example:
Given this type, which can be implicitly cast and assigned as an int, float, or string:
public class VersatileType {
public int intVal = 10;
public float floatVal = 1.5f;
public string stringVal = "words";
// implicit convertions
// ints
public static implicit operator int(VersatileType vt) {
return vt.intVal;
}
public static implicit operator VersatileType(int val) {
VersatileType vt = new VersatileType();
vt.intVal = val;
return vt;
}
// floats
public static implicit operator float(VersatileType vt) {
return vt.floatVal;
}
public static implicit operator VersatileType(float val) {
VersatileType vt = new VersatileType();
vt.floatVal = val;
return vt;
}
// strings
public static implicit operator string(VersatileType vt) {
return vt.stringVal;
}
public static implicit operator VersatileType(string val) {
VersatileType vt = new VersatileType();
vt.stringVal = val;
return vt;
}
}
And the given method which does some implicit casting and assigning:
public VersatileType obj;
public void CastAndAssignObj() {
obj = 0;
string text = obj;
}
Is there a way to use Reflection (or any other process) to determine how "obj" was cast/assigned from inside CastAndassignObj()?
I'd like to end up with a collection containing the Types int and string for the above example.
Many thanks-

Reflection will do you no good here because it will always produce VersatileType and that has 3 properties of type string, int and float reflection won't tell you which one is being used. I think the simplest way to do what you want is either to add a flag (isInt, isFloat, isString) or stop initializing those values so you can say
if (myVersatileType.StringVal != null)
// guess we're a string
You can't use reflection because it does not create different types. There is only one type, which has three values, and only one of those is used.

How can I implicitly convert another struct to my Type?

As it is MyClass x = 120;, is it possible to create such a custom class?
If so, how can I do that?

It's generally considered a bad idea to use implicit operators, as they are, after all, implicit and run behind your back. Debugging code littered with operator overloads is a nightmare. That said, with something like this:
public class Complex
{
public int Real { get; set; }
public int Imaginary { get; set; }
public static implicit operator Complex(int value)
{
Complex x = new Complex();
x.Real = value;
return x;
}
}
you could use:
Complex complex = 10;
or you could ever overload the + operator
public static Complex operator +(Complex cmp, int value)
{
Complex x = new Complex();
x.Real = cmp.Real + value;
x.Imaginary = cmp.Imaginary;
return x;
}
and use code like
complex +=5;

Not sure if this is what you want but you may get there by implementing the implicit operator:
http://msdn.microsoft.com/en-us/library/z5z9kes2(VS.71).aspx

Create an implicit operator:
http://msdn.microsoft.com/en-us/library/z5z9kes2.aspx
For example:
public struct MyStruct // I assume this is what you meant, since you mention struct in your title, but use MyClass in your example.
{
public MyClass(int i) { val = i; }
public int val;
// ...other members
// User-defined conversion from MyStruct to double
public static implicit operator int(MyStruct i)
{
return i.val;
}
// User-defined conversion from double to Digit
public static implicit operator MyStruct(int i)
{
return new MyStruct(i);
}
}
"Is this a good idea?" is debatable. Implicit conversions tend to break accepted standards for programmers; generally not a good idea. But if you're doing some large value library, for example, then it might be a good idea.

yes, here's a short example ...
public struct MyCustomInteger
{
private int val;
private bool isDef;
public bool HasValue { get { return isDef; } }
public int Value { return val; } }
private MyCustomInteger() { }
private MyCustomInteger(int intVal)
{ val = intVal; isDef = true; }
public static MyCustomInteger Make(int intVal)
{ return new MyCustomInteger(intVal); }
public static NullInt = new MyCustomInteger();
public static explicit operator int (MyCustomInteger val)
{ if (!HasValue) throw new ArgumentNullEception();
return Value; }
public static implicit operator MyCustomInteger (int val)
{ return new MyCustomInteger(val); }
}

How to parse a string into a nullable int

I'm wanting to parse a string into a nullable int in C#. ie. I want to get back either the int value of the string or null if it can't be parsed.
I was kind of hoping that this would work
int? val = stringVal as int?;
But that won't work, so the way I'm doing it now is I've written this extension method
public static int? ParseNullableInt(this string value)
{
if (value == null || value.Trim() == string.Empty)
{
return null;
}
else
{
try
{
return int.Parse(value);
}
catch
{
return null;
}
}
}
Is there a better way of doing this?
EDIT: Thanks for the TryParse suggestions, I did know about that, but it worked out about the same. I'm more interested in knowing if there is a built-in framework method that will parse directly into a nullable int?

int.TryParse is probably a tad easier:
public static int? ToNullableInt(this string s)
{
int i;
if (int.TryParse(s, out i)) return i;
return null;
}
Edit #Glenn int.TryParse is "built into the framework". It and int.Parse are the way to parse strings to ints.

You can do this in one line, using the conditional operator and the fact that you can cast null to a nullable type (two lines, if you don't have a pre-existing int you can reuse for the output of TryParse):
Pre C#7:
int tempVal;
int? val = Int32.TryParse(stringVal, out tempVal) ? tempVal : (int?)null;
With C#7's updated syntax that allows you to declare an output variable in the method call, this gets even simpler.
int? val = Int32.TryParse(stringVal, out var tempVal) ? tempVal : (int?)null;

[Updated to use modern C# as per #sblom's suggestion]
I had this problem and I ended up with this (after all, an if and 2 returns is soo long-winded!):
int? ToNullableInt (string val)
=> int.TryParse (val, out var i) ? (int?) i : null;
On a more serious note, try not to mix int, which is a C# keyword, with Int32, which is a .NET Framework BCL type - although it works, it just makes code look messy.

C# >= 7.1
var result = int.TryParse(foo, out var f) ? f : default;
See C# language versioning to ascertain what language version your project supports

Glenn Slaven: I'm more interested in knowing if
there is a built-in framework method
that will parse directly into a
nullable int?
There is this approach that will parse directly to a nullable int (and not just int) if the value is valid like null or empty string, but does throw an exception for invalid values so you will need to catch the exception and return the default value for those situations:
public static T Parse<T>(object value)
{
try { return (T)System.ComponentModel.TypeDescriptor.GetConverter(typeof(T)).ConvertFrom(value.ToString()); }
catch { return default(T); }
}
This approach can still be used for non-nullable parses as well as nullable:
enum Fruit { Orange, Apple }
var res1 = Parse<Fruit>("Apple");
var res2 = Parse<Fruit?>("Banana");
var res3 = Parse<int?>("100") ?? 5; //use this for non-zero default
var res4 = Parse<Unit>("45%");
NB: There is an IsValid method on the converter you can use instead of capturing the exception (thrown exceptions does result in unnecessary overhead if expected). Unfortunately it only works since .NET 4 but there's still an issue where it doesn't check your locale when validating correct DateTime formats, see bug 93559.

Old topic, but how about:
public static int? ParseToNullableInt(this string value)
{
return String.IsNullOrEmpty(value) ? null : (int.Parse(value) as int?);
}
I like this better as the requriement where to parse null, the TryParse version would not throw an error on e.g. ToNullableInt32(XXX). That may introduce unwanted silent errors.

Try this:
public static int? ParseNullableInt(this string value)
{
int intValue;
if (int.TryParse(value, out intValue))
return intValue;
return null;
}

I feel my solution is a very clean and nice solution:
public static T? NullableParse<T>(string s) where T : struct
{
try
{
return (T)typeof(T).GetMethod("Parse", new[] {typeof(string)}).Invoke(null, new[] { s });
}
catch (Exception)
{
return null;
}
}
This is of course a generic solution which only require that the generics argument has a static method "Parse(string)". This works for numbers, boolean, DateTime, etc.

You can forget all other answers - there is a great generic solution:
http://cleansharp.de/wordpress/2011/05/generischer-typeconverter/
This allows you to write very clean code like this:
string value = null;
int? x = value.ConvertOrDefault();
and also:
object obj = 1;
string value = null;
int x = 5;
if (value.TryConvert(out x))
Console.WriteLine("TryConvert example: " + x);
bool boolean = "false".ConvertOrDefault();
bool? nullableBoolean = "".ConvertOrDefault();
int integer = obj.ConvertOrDefault();
int negativeInteger = "-12123".ConvertOrDefault();
int? nullableInteger = value.ConvertOrDefault();
MyEnum enumValue = "SecondValue".ConvertOrDefault();
MyObjectBase myObject = new MyObjectClassA();
MyObjectClassA myObjectClassA = myObject.ConvertOrDefault();

I would suggest following extension methods for string parsing into int value with ability to define default value in case parsing is not possible:
public static int ParseInt(this string value, int defaultIntValue = 0)
{
return int.TryParse(value, out var parsedInt) ? parsedInt : defaultIntValue;
}
public static int? ParseNullableInt(this string value)
{
if (string.IsNullOrEmpty(value))
return null;
return value.ParseInt();
}

The following should work for any struct type. It is based off code by Matt Manela from MSDN forums. As Murph points out the exception handling could be expensive compared to using the Types dedicated TryParse method.
public static bool TryParseStruct<T>(this string value, out Nullable<T> result)
where T: struct
{
if (string.IsNullOrEmpty(value))
{
result = new Nullable<T>();
return true;
}
result = default(T);
try
{
IConvertible convertibleString = (IConvertible)value;
result = new Nullable<T>((T)convertibleString.ToType(typeof(T), System.Globalization.CultureInfo.CurrentCulture));
}
catch(InvalidCastException)
{
return false;
}
catch (FormatException)
{
return false;
}
return true;
}
These were the basic test cases I used.
string parseOne = "1";
int? resultOne;
bool successOne = parseOne.TryParseStruct<int>(out resultOne);
Assert.IsTrue(successOne);
Assert.AreEqual(1, resultOne);
string parseEmpty = string.Empty;
int? resultEmpty;
bool successEmpty = parseEmpty.TryParseStruct<int>(out resultEmpty);
Assert.IsTrue(successEmpty);
Assert.IsFalse(resultEmpty.HasValue);
string parseNull = null;
int? resultNull;
bool successNull = parseNull.TryParseStruct<int>(out resultNull);
Assert.IsTrue(successNull);
Assert.IsFalse(resultNull.HasValue);
string parseInvalid = "FooBar";
int? resultInvalid;
bool successInvalid = parseInvalid.TryParseStruct<int>(out resultInvalid);
Assert.IsFalse(successInvalid);

I'm more interested in knowing if there is a built-in framework method that will parse directly into a nullable int?
There isn't.

This solution is generic without reflection overhead.
public static Nullable<T> ParseNullable<T>(string s, Func<string, T> parser) where T : struct
{
if (string.IsNullOrEmpty(s) || string.IsNullOrEmpty(s.Trim())) return null;
else return parser(s);
}
static void Main(string[] args)
{
Nullable<int> i = ParseNullable("-1", int.Parse);
Nullable<float> dt = ParseNullable("3.14", float.Parse);
}

I felt I should share mine which is a bit more generic.
Usage:
var result = "123".ParseBy(int.Parse);
var result2 = "123".ParseBy<int>(int.TryParse);
Solution:
public static class NullableParse
{
public static Nullable<T> ParseBy<T>(this string input, Func<string, T> parser)
where T : struct
{
try
{
return parser(input);
}
catch (Exception exc)
{
return null;
}
}
public delegate bool TryParseDelegate<T>(string input, out T result);
public static Nullable<T> ParseBy<T>(this string input, TryParseDelegate<T> parser)
where T : struct
{
T t;
if (parser(input, out t)) return t;
return null;
}
}
First version is a slower since it requires a try-catch but it looks cleaner. If it won't be called many times with invalid strings, it is not that important.
If performance is an issue, please note that when using TryParse methods, you need to specify the type parameter of ParseBy as it can not be inferred by the compiler. I also had to define a delegate as out keyword can not be used within Func<>, but at least this time compiler does not require an explicit instance.
Finally, you can use it with other structs as well, i.e. decimal, DateTime, Guid, etc.

I found and adapted some code for a Generic NullableParser class. The full code is on my blog Nullable TryParse
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Globalization;
namespace SomeNamespace
{
/// <summary>
/// A parser for nullable types. Will return null when parsing fails.
/// </summary>
/// <typeparam name="T"></typeparam>
///
public static class NullableParser<T> where T : struct
{
public delegate bool TryParseDelegate(string s, out T result);
/// <summary>
/// A generic Nullable Parser. Supports parsing of all types that implements the tryParse method;
/// </summary>
/// <param name="text">Text to be parsed</param>
/// <param name="result">Value is true for parse succeeded</param>
/// <returns>bool</returns>
public static bool TryParse(string s, out Nullable<T> result)
{
bool success = false;
try
{
if (string.IsNullOrEmpty(s))
{
result = null;
success = true;
}
else
{
IConvertible convertableString = s as IConvertible;
if (convertableString != null)
{
result = new Nullable<T>((T)convertableString.ToType(typeof(T),
CultureInfo.CurrentCulture));
success = true;
}
else
{
success = false;
result = null;
}
}
}
catch
{
success = false;
result = null;
}
return success;
}
}
}

public static void Main(string[] args)
{
var myString = "abc";
int? myInt = ParseOnlyInt(myString);
// null
myString = "1234";
myInt = ParseOnlyInt(myString);
// 1234
}
private static int? ParseOnlyInt(string s)
{
return int.TryParse(s, out var i) ? i : (int?)null;
}

The cleaner way would be to write a separate function or extension method, but if you just want a one-liner:
string s;
int? i = s == null ? (int?)null : int.Parse(s);

You should never use an exception if you don't have to - the overhead is horrible.
The variations on TryParse solve the problem - if you want to get creative (to make your code look more elegant) you could probably do something with an extension method in 3.5 but the code would be more or less the same.

Using delegates, the following code is able to provide reusability if you find yourself needing the nullable parsing for more than one structure type. I've shown both the .Parse() and .TryParse() versions here.
This is an example usage:
NullableParser.TryParseInt(ViewState["Id"] as string);
And here is the code that gets you there...
public class NullableParser
{
public delegate T ParseDelegate<T>(string input) where T : struct;
public delegate bool TryParseDelegate<T>(string input, out T outtie) where T : struct;
private static T? Parse<T>(string input, ParseDelegate<T> DelegateTheParse) where T : struct
{
if (string.IsNullOrEmpty(input)) return null;
return DelegateTheParse(input);
}
private static T? TryParse<T>(string input, TryParseDelegate<T> DelegateTheTryParse) where T : struct
{
T x;
if (DelegateTheTryParse(input, out x)) return x;
return null;
}
public static int? ParseInt(string input)
{
return Parse<int>(input, new ParseDelegate<int>(int.Parse));
}
public static int? TryParseInt(string input)
{
return TryParse<int>(input, new TryParseDelegate<int>(int.TryParse));
}
public static bool? TryParseBool(string input)
{
return TryParse<bool>(input, new TryParseDelegate<bool>(bool.TryParse));
}
public static DateTime? TryParseDateTime(string input)
{
return TryParse<DateTime>(input, new TryParseDelegate<DateTime>(DateTime.TryParse));
}
}

I realise this is an old topic, but can't you simply:
(Nullable<int>)int.Parse(stringVal);
?

I've come up with this one, which has satisfied my requirements (I wanted my extension method to emulate as close as possible the return of the framework's TryParse, but without try{} catch{} blocks and without the compiler complaining about inferring a nullable type within the framework method)
private static bool TryParseNullableInt(this string s, out int? result)
{
int i;
result = int.TryParse(s, out i) ? (int?)i : null;
return result != null;
}

I suggest code bellow. You may work with exception, when convert error occured.
public static class Utils {
public static bool TryParse<Tin, Tout>(this Tin obj, Func<Tin, Tout> onConvert, Action<Tout> onFill, Action<Exception> onError) {
Tout value = default(Tout);
bool ret = true;
try {
value = onConvert(obj);
}
catch (Exception exc) {
onError(exc);
ret = false;
}
if (ret)
onFill(value);
return ret;
}
public static bool TryParse(this string str, Action<int?> onFill, Action<Exception> onError) {
return Utils.TryParse(str
, s => string.IsNullOrEmpty(s) ? null : (int?)int.Parse(s)
, onFill
, onError);
}
public static bool TryParse(this string str, Action<int> onFill, Action<Exception> onError) {
return Utils.TryParse(str
, s => int.Parse(s)
, onFill
, onError);
}
}
Use this extension method in code (fill int? Age property of a person class):
string ageStr = AgeTextBox.Text;
Utils.TryParse(ageStr, i => person.Age = i, exc => { MessageBox.Show(exc.Message); });
OR
AgeTextBox.Text.TryParse(i => person.Age = i, exc => { MessageBox.Show(exc.Message); });

Develop Reference

C# (C-Sharp) is a programming language developed by Microsoft that runs on the .NET Framework.

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