Develop a C# model for the TS Index Signatures entity

My angular frontend is sending an object with index signature to a .NET Core controller. It looks something like this:

export interface LazyLoadEvent {
    first?: number;
    rows?: number;
    filters?: {
        [s: string]: FilterMetadata;
    };
    
}
export interface FilterMetadata {
    value?: any;
    matchMode?: string;
    operator?: string;
}

I am trying to create models in C# to handle requests like this. I am unsure of how to construct the property filter in C#. What would be the equivalent of TypeScript Index Signatures implementation in C#?

From typescriptlang: Index Signatures Sometimes you don’t know all the names of a type’s properties ahead of time, but you do know the shape of the values. In those cases you can use an index signature to describe the types of possible values.

Answer №1

If you're looking to store key-value pairs, consider using a Dictionary

Dictionary<string, FilterMetadata> Filters { get; set; }

You can easily retrieve values by key using the indexer access

var value = Filters["SomeKey"];

Alternatively, you can also use the TryGetValue method.

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