Deserialize JSON with special characters in property name

February 7, 2023

I have a json property like "A\/B" and I want to deserialize it in c# property AB

I have tried both System.Text.Json and

[JsonPropertyName(@"A\/B")]
public bool AB { get; set; }

[JsonProperty(@"A\/B")]
public bool AB { get; set; }

[JsonProperty(PropertyName = (@"A\/B")]
public bool AB { get; set; }

[JsonPropertyName("A\\/B")]
public bool? AB { get; set; }

but is not deserialized correctly is always false and in the json file is true like "A/B": true,.

Json example :

{
    "List": [
        {
            "Name": "name",
            "A\/B": true,
        },
        {
            "Name": "name1",
            "A\/B": false,
        }
    ]
        
}

Any suggestions will be highly appreciated.

>Solution :

If the JSON looks like

{
    "A\/B": true
}

Then the name of the property is actually just A/B.

The backslash character also acts as an escape character in JSON syntax, so the backslash isn’t actually part of the property name. Even though the forward slash doesn’t need any escaping in this case, it is still acceptable to escape it nonetheless. See RFC 8259 section 7.

So, in your C# code, you also don’t need any backslashes: