XML and JSON result showing different result for common class in WEB API

In my WEB API i get the result in XML and Json. it works fine. But, When I collect data from DB some records is empty. While on conversion to xml or json, the result is different. Common Class for Output is.

public  class items
{
    [JsonProperty(PropertyName = "frequency")]
    [XmlElement(ElementName = "frequency")]
    public string Frequency { get; set; }
    [JsonProperty(PropertyName = "modulation")]
    [XmlElement(ElementName = "modulation")]
    public string Modulation { get; set; }
}

Conversion takes place by

var Station = new items
{
    Frequency = (mContent["frequency"] is DBNull) ? null : mContent["frequency"].ToString(),
    Modulation = (mContent["modulation"] is DBNull) ? null : mContent["modulation"].ToString(),
}

For Json Result I get what I really want:

[{"items":[{"frequency":null,"modulation":null}]}]

The XML shows

<items>
  <item/>
</items>

But I want 

 <items>
  <item>
    <frequency/>
    <modulation/>
 </item>
</items>

How could do this?

Jon Skeet
people
quotationmark

I think you probably want to use the XmlElementAttribute.IsNullable property:

public  class items
{
    [JsonProperty(PropertyName = "frequency")]
    [XmlElement(ElementName = "frequency", IsNullable = true)]
    public string Frequency { get; set; }
    [JsonProperty(PropertyName = "modulation")]
    [XmlElement(ElementName = "modulation", IsNullable = true)]
    public string Modulation { get; set; }
}

You should then get:

<items>
  <item>
    <frequency xsi:nil = "true" />
    <modulation xsi:nil = "true" />
 </item>
</items>

people

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