For decimal / int / long deserialization is failing when property is empty

Question

_{Monday, November 5, 2018 6:49 AM}

Hi Team,

We have WCF service and request in XML format. In the XML request one of the attribute is coming in this format <test/>.

Below are the data member. Its in decimal format and nullable. But with <test/> xml attribute its throwing desensitization error. If we change the xml attribute to <test i:nil="true" /> it works. This issue is only with data type decimal/int/long etc..With data type string <test/> it works well.

[DataMember]

public decimal? test
        { get; set; }

But I need the solution for data type decimal/int/long.  Because we are not receiving in this format <test i:nil="true" /> from upstream. They are sending <test />.  How to handle this ?

Thanks and regards,

Santosh Hegde

All replies (5)

_{Monday, November 5, 2018 8:40 AM}

Try make it like this and see if it solves your problem (I currently don't have compiler to check).

[DataMember(IsRequired = false)]
public decimal? test { get; set; }

_{Monday, November 5, 2018 8:53 AM}

It doesn't work. Same  error: {"There was an error deserializing the object of type. Input string was not in a correct format."}

If I change XML attribute to <test i:nil="true" /> it works.

But as I explained  upstream system always send <test />.  I need to know how I can deserialize. Is there any way before deserializewe can change the XML attribute to <test i:nil="true" />. But there are multiple xml attributes upstream is sending in this format <test />

_{Monday, November 5, 2018 9:12 AM}

Does this help in deserialization case?

[DataMember(EmitDefaultValue = false)]

_{Monday, November 5, 2018 9:14 AM}

Thank you.

Tried this. Same issue.

_{Monday, November 5, 2018 10:14 AM}

https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/data-member-default-values

[DataContract]
public class Employee
{
    [DataMember]
    public string employeeName = null;
    [DataMember]
    public int employeeID = 0;
    [DataMember(EmitDefaultValue = false)]
    public string position = null;
    [DataMember(EmitDefaultValue = false)]
    public int salary = 0;
    [DataMember(EmitDefaultValue = false)]
    public int? bonus = null;
    [DataMember(EmitDefaultValue = false)]
    public int targetSalary = 57800;
}