Binding case-insensitive query parameter to string enum in .NET 9 Minimal API

I have an

order

order

query parameter that I'd like to bind to an

Order

Order

enum in a minimal API endpoint (

[FromQuery] Order order = Order.Desc

[FromQuery] Order order = Order.Desc

[JsonConverter(typeof(JsonStringEnumConverter))]
public enum Order
{
    [JsonStringEnumMemberName("asc")] Asc,

    [JsonStringEnumMemberName("desc")] Desc
}

[JsonConverter(typeof(JsonStringEnumConverter))]
public enum Order
{
    [JsonStringEnumMemberName("asc")] Asc,

    [JsonStringEnumMemberName("desc")] Desc
}

I'd like to accept all values like "ASC", "asc", "Asc", but currently only "Asc" and "Desc" work. I get a bad request with

Microsoft.AspNetCore.Http.BadHttpRequestException: Failed to bind parameter "Order order" from "desc".

Microsoft.AspNetCore.Http.BadHttpRequestException: Failed to bind parameter "Order order" from "desc".

C#•13mo ago•

4 replies

sl8er

Binding case-insensitive query parameter to string enum in .NET 9 Minimal API

I have an

order

order

query parameter that I'd like to bind to an

Order

Order

enum in a minimal API endpoint (

[FromQuery] Order order = Order.Desc

[FromQuery] Order order = Order.Desc

[JsonConverter(typeof(JsonStringEnumConverter))]
public enum Order
{
    [JsonStringEnumMemberName("asc")] Asc,

    [JsonStringEnumMemberName("desc")] Desc
}

[JsonConverter(typeof(JsonStringEnumConverter))]
public enum Order
{
    [JsonStringEnumMemberName("asc")] Asc,

    [JsonStringEnumMemberName("desc")] Desc
}

I'd like to accept all values like "ASC", "asc", "Asc", but currently only "Asc" and "Desc" work. I get a bad request with

Microsoft.AspNetCore.Http.BadHttpRequestException: Failed to bind parameter "Order order" from "desc".

Microsoft.AspNetCore.Http.BadHttpRequestException: Failed to bind parameter "Order order" from "desc".

Binding case-insensitive query parameter to string enum in .NET 9 Minimal API

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