Is there a C# counterpart to TypeScript's Template Literal Types?

Recently, I've encountered a scenario in my C# project where I need to handle a SQL sort order parameter within a function:

public static string BuildSortClause(string colId, string sortOrder) {
   ...
}

Specifically, I want to ensure that only 'ASC' or 'DESC' are accepted as valid sortOrder strings during compilation. Any other input should result in a failure. If this were Typescript, I could easily achieve this by using a Template Literal Type for the parameter like so:

type SortOrder = 'ASC' | 'DESC';

My question is: What is the most similar solution in C# to restrict the type of strings allowed for this parameter?

c#typescripttypes

Answer №1

To achieve this functionality, utilize an enum along with the default ToString method.

public enum SortingType { Ascending, Descending }

public static string CreateSortingClause(string columnId, SortingType sortType) {
   // string sorting = sortType.ToString(); //either "Ascending" or "Descending"
   ...
}

public static void Execute() {
   CreateSortingClause("someColumnId", SortingType.Ascending);
}

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