Question

Is there any way to wrtie code to do this:

Foreach property in MyObject;
check to see if property has a DataMember Validator on is with IsRequired=true;

[DataMember(Order = 2, IsRequired=true)]
public string AddressLine1 { get; set; }

[DataMember(Order = 3)]
public string AddressLine2 { get; set; }

If so check if the object has a notNull or empty value in it;

So in summary I create a method called CheckForRequiredFields(object o)

pass it an “Address” object in this case with properties listed above. The code Sees the first property has RequiredField=true so it checks that the Address object passed to it has a value for AddressLine1

Answer 1

Something like (from memory so no guarantees of correctness):

foreach(var propInfo in o.GetType().GetProperties())
{
    var dmAttr = propInfo.GetCustomAttributes(typeof(DataMemberAttribute), false).FirstOrDefault() as DataMemberAttribute;
    if (dmAttr == null)
        continue;

    object propValue = propInfo.GetValue(o, null);
    if (dmAttr.IsRequired && propValue == null)
        // It is required but does not have a value... do something about it here
}