This question already has answers here:
How can I use a reserved keyword as an identifier in my JSON model class?
(3 answers)
How do I use a C# keyword as a property name?
(1 answer)
Closed 3 years ago.
I am currently working on an c# application that uses the spotify api. For the parsing of the Newtonsoft stuff I am using Newtonsoft.Json. But when receiving a track, the json includes a key explicit, and explicit is a keyword. So my question is, if there is a way to give the track class a member called explicit
Use the # prefix to escape reserved keywords.
var #explicit = ...
Related
This question already has answers here:
C# JSON Serialization of Dictionary into {key:value, ...} instead of {key:key, value:value, ...}
(6 answers)
How do I convert a dictionary to a JSON String in C#?
(16 answers)
Closed 3 days ago.
I would like to create a json file from a dictionary with key/value pairs.
The key would be a string separated by the ":" symbol and the value an array.
The idea would be to follow the opposite approach that .NET does with configuration. .NET loads the appsettings file into a dictionary with a key separated by the ":" symbol.
Is there a library or an easy way to do this functionality with .NET? I don't know how to start.
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C# interpolated string with conditional-operator [duplicate]
(2 answers)
Closed 4 months ago.
I have a boolean isEuropean and based on it's value I want to write
Console.WriteLine("This individual is/is not European");
Is it possible in C# to add a conditional directly inside a string with no additional variables created?
bool isEuropean = true;
Console.WriteLine($"This individual {(isEuropean ? "is" : "is not")} European");
Yes, you can do string interpolation with a ternary, make sure you contain the ternary in parentheses.
This question already has answers here:
How do I use a C# keyword as a property name?
(1 answer)
C# # operator (not for string literals)
(4 answers)
What's the use/meaning of the # character in variable names in C#?
(9 answers)
# prefix for identifiers in C#
(5 answers)
Closed 10 months ago.
This post was edited and submitted for review 10 months ago and failed to reopen the post:
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How to resolve the ambiguity between the record type name and the record keyword in C#?
I've seen this SO question it is about 13 years ago but this option is a new feature and related more to modifiers. On that post you can't use class alone in context. But here you can define and use record every where without any prefix. you just resolve the ambiguity with single-time prefix.You can not use class as a property name nowhere but for record it is possible. Just somewhere creates ambiguity.
What's the use/meaning of the # character in variable names in C#?
C# # operator (not for string literals)
# prefix for identifiers in C#
These SO posts are all about adding # before a keyword. You can not use that keyword alone(without #) as a variable. But this new C# feature is for resolving ambiguity. You have not to use # every where, but just at ambiguous situations.
Example for the difference:
var #int = 3;
int= 5; //error❌
var #record = 5;
record = 5;//OK✅
Question example:
class record
{
public record()
{
}
record Name() //ambiguity record type name with record keyword
{
return new record(); //Compile time error
}
}
Just put an at-sign # before the record type.
By placing an # before the type name you explicitly tell the compiler that it is a type name not a keyword.
class record
{
public record()
{
}
#record Name() //✅
{
return new record();
}
}
You can use # in every similar situation.
For more info refer to Warning on lower case type names in C# 11
This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
.NET Enumeration allows comma in the last field
i noticed while i was refreshing my memory on c# that with enums, you dont get a complaint from the compiler when you leave a comma after the last variable... EG
enum fruit {
apple,
pear,
watermelon,
}
i was wondering you can do this? shouldnt the compiler say "syntax error: ," or something?
It is part of the C# specification, the compiler is simply following it.
Document: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-334.pdf
Page 363, Section 19.7
This question already has answers here:
Closed 12 years ago.
Possible Duplicate:
C# eval equivalent?
Hi - I was wondering how I can execute a user provided string containing c# code from my application.
Example:
string userProvidedString = "Console.Write("Hello World!")";
ExecuteCode(userProvidedString); // Should output Hello World!
There's a CSharpCodeProvider Class in Framework that can be utilized.
It contains a CompileAssemblyFromSource method that Parses and compiles the code in a String.
You might also like checking this blog post on MSDN: http://blogs.msdn.com/b/dohollan/archive/2010/08/09/programmatically-invoke-the-c-compiler.aspx
NOTE: The above blog post link does not work anymore, so use this one instead: https://learn.microsoft.com/en-us/archive/blogs/dohollan/programmatically-invoke-the-c-compiler
Follow this method: http://www.west-wind.com/presentations/dynamiccode/dynamiccode.htm