Const string list c#

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WebJan 22, 2024 · To give you a quick example of the numerous ( 20 in total) const ants that are defined in the class: private const string NAME1 = "NAME1"; private const string NAME2 = "NAME2"; private const string NAME3 = "NAME3"; ... As you can see, the name of the constant equals the value of it, if that can help. WebFeb 5, 2015 · public static class A { public static readonly List alist = new List { //some big data about 70 rows }; public struct astruct { public const string adata = "a data"; } } public class B { string s1 = A.astruct.adata; string s2 = A.alist.Find (m => m.Equals (A.astruct.adata)); } Share Improve this answer Follow

A const list in C# - Stack Overflow

Webinternal static class ErrorMessage { public const string NoAccess = "Error accessing api - check internet connection/api address"; } And you can reference that by using : result = new TextResult (ErrorMessage.NoAccess); Or, you can use a resource file. Share Improve this answer Follow answered May 4, 2016 at 18:08 Xiaoy312 14.2k 1 32 43 WebDepending on your context, there might be some solutions, one of them is, if what you really need is a list of double, List a = new List () {1,2,3,4,5}.AsReadOnly (); will give you a content-readonly list of double. The problem is that you're declaring a constant array of double, not an array of constant doubles. login twinq

c# - Manage a list of Constants - Stack Overflow

WebFeb 29, 2016 · You could implement a method that yields the strings: public Ienumerable GetStrings () { yield return TestA; yield return TestB; } Else you should look into reflection to return the properties that are static and string and then get the values by calling them. Regards GJ. WebMar 21, 2024 · In C#, we cannot declare a constant array with the following syntax. public const string[] Values = { "Value1", "Value2", "Value3", "Value4" }; This will give a compiler error because the const keyword is used for values that are known at the compile-time. WebJun 5, 2024 · select new SelectListItem { Text = (string)na.TypedValue.Value, Value = (string)f.GetRawConstantValue () }; var list = selectLisItems.ToList (); At last I'm constructing SelectListItem from the attribute and the fields and create the desired List from the query. log in-twitch

C# check if string is equal to const name - Stack Overflow

How to create a C# List with const content? - Stack Overflow

WebJan 5, 2016 · const string [] Constants = { LoanApplication.CONST_FIELD_NAME_DOB, LoanApplication.CONST_FIELD_NAME_EMPLOYMENTSTATUS, } but I get the error: a const field of a reference type can only be initialized with null There are lots of questions that relate to this problem, but none where the array contains a list of existing … WebIn the above example, List primeNumbers = new List(); creates a list of int type. In the same way, cities and bigCities are string type list. You can then add elements in a list using the Add() method or the collection-initializer syntax.. You can also add elements of the custom classes using the collection-initializer syntax. inexpensive hotels cassis franceWebJan 5, 2024 · List staticconstList = new List (); Type type = typeof (Files); foreach (var field in type.GetFields ()) { var val = field.GetValue (null); staticconstList.Add (val.ToString ()); } Or something like This: List staticconstList = type.GetFields ().Select (x => x.GetValue (null).ToString ()).ToList (); Share login twimm.fr

"WebJun 12, 2024 · Const is a reserved word. It specifies that a value is invariant and must not be modified after compile-time. Const values, like const strings, simplify and optimize … " - Const string list c#

Const string list c#

static - Declaring a const double[] in C#? - Stack Overflow

WebJul 8, 2024 · is there any way to get all const strings of these class to a List ? public class Permissions { public const string AccessHomePage = "AccessHomePage"; public const string AccessAdminPage = "AccessAdminPage"; ... } To add an admin user all permission at once would be easier to get a list directy of all strings in the class... WebFeb 8, 2024 · public readonly List myConsts = typeof (Permissions) .GetFields () .Select (x => x.GetValue (null).ToString ()) .ToList (); This looks at the Permissions type, selects all public fields, then pulls the values from those FieldInfo into a new collection. Share Improve this answer Follow answered Feb 8, 2024 at 23:42 David L 32.4k 8 63 93

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WebJun 22, 2024 · In C#, use readonly to declare a const array. public static readonly string [] a = { "Car", "Motorbike", "Cab" }; In readonly, you can set the value at runtime as well … WebAug 17, 2024 · const int one = 1, two = 2, three = 3; Only built-in C# types, which are not objects such as int, string, double, and long, can be used as constants. For example, the following won’t work:...

WebDec 24, 2024 · redeclaring the variables constant based on both of the above: Method (ref string keyIndicator) and Method (in string keyIndicator) followed by : const string kIndicator = keyIndicator; Tangent No matter what I do, I get an error: The expression being assigned to 'x' must be constant. But it is constant. WebNov 1, 2016 · 1. There is no "const reference" in C#. My suggestion is that you make a public interface with all your "reader" methods, make Content implement that interface, and then hand out a List. Then make Content an internal type. So now your internal code can party on the content all you want, but the external code can only get at …

WebApr 21, 2012 · Add a comment. 95. If you would like to get the values of all constants of a specific type, from the target type, here is an extension method (extending some of the answers on this page): public static class TypeUtilities { public static List GetAllPublicConstantValues (this Type type) { return type .GetFields … WebOct 27, 2024 · Example C# static class Constants { public const double Pi = 3.14159; public const int SpeedOfLight = 300000; // km per sec. } class Program { static void Main() { double radius = 5.3; double area = Constants.Pi * (radius * radius); int secsFromSun = 149476000 / Constants.SpeedOfLight; // in km Console.WriteLine (secsFromSun); } }

WebNov 5, 2024 · Constants are immutable values which are known at compile time and do not change for the life of the program. Constants are declared with the const modifier. Only the C# built-in types (excluding System.Object) may be declared as const. User-defined types, including classes, structs, and arrays, cannot be const. Use the readonly modifier to ...

WebNov 5, 2024 · C# does not support const methods, properties, or events. The enum type enables you to define named constants for integral built-in types (for example int, uint, … inexpensive hotels federal wayWebconst is the prefix of a constant variable. One that doesn't change at runtime. Usually if you have a variable that meets this you should declare it as constant (const), both to avoid mistakes in the code and to enable compiling optimizations. This is why the refactoring tool does it for you. Share Improve this answer Follow login-twitch-eaWebMay 23, 2024 · I'm not sure if this is possible at all or if I should use something else then const. I have about 50 const strings, with all a unique value. The program will read a … log intwitchWebIn several projects, we have a list of constant values in the database. These each have a table, name, and a GUID value. For example a Ticket Status table might have 3 values, "Open", "Closed" and "Hold". In our C# code a framework generates a C# file, as follows. inexpensive hotel room in mahwah njWeb1) string str = "111"; const string str2 = str; 2) string str = "111"; const string str2 = new string (str.ToCharArray ()); Which results in Error: The expression being assigned to 'str2' must be constant Is there any way to create a const string from string variable ? c# string constants Share Improve this question Follow login twitter adsWebAug 11, 2011 · List lines = new List (File.ReadAllLines ("your file")); lines.Add ("My new line!"); Note the static helper method on the System.IO.File static class. I can't remember off-hand, but I think it returns a string array, which you can feed into the constructor of the list. To iterate, use the foreach construct: login twoa inexpensive hotels baltimore md