Json.Net How to deserialize null as empty string?

Question

I have string property in my class_ for example

        [DataMember]
        [JsonProperty(PropertyName = "email")]
        [StringLength(40, ErrorMessage = "The Mobile value cannot exceed 40 characters. ")]
        public string Email { get; set; }

By some reason during Convert.Deserialize process I need to have empty string in this property instead on null in case this value is not setup in JSON object. How to do it ?

score 8 · Accepted Answer · edited Mar 01 '16 at 17:26

8

You could use the DefaultValue attribute.

Decorate it as

[DataMember]
[JsonProperty(PropertyName = "email", DefaultValueHandling = DefaultValueHandling.Populate)]
[StringLength(40, ErrorMessage = "The Mobile value cannot exceed 40 characters. ")]
[DefaultValue("")]
public string Email { get; set; }

edited Mar 01 '16 at 17:26

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answered Feb 28 '13 at 12:58

Srikanth Venugopalan

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It doesn't work by without, [JsonProperty(PropertyName = "email",DefaultValueHandling = DefaultValueHandling.Populate)] – Arbejdsglæde Feb 28 '13 at 13:56
@cleric - thanks for the update. Yes, I missed that, its been a while, sorry. – Srikanth Venugopalan Feb 28 '13 at 14:00

Json.Net How to deserialize null as empty string?

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