GetCustomAttributes does not return value

Question

I have defined a custom attribute

[AttributeUsage(AttributeTargets.Property )]
public class FieldAttribute: Attribute
{
    public FieldAttribute(string field)
    {
        this.field = field;
    }
    private string field;

    public string Field
    {
        get { return field; }

    }
}

My Class which uses the custom attribute is as below

[Serializable()]   
public class DocumentMaster : DomainBase
{

    [Field("DOC_CODE")]
    public string DocumentCode { get; set; }


    [Field("DOC_NAME")]
    public string DocumentName { get; set; }


    [Field("REMARKS")]
    public string Remarks { get; set; }


   }
}

But when i try to get the value of the custom attribute it returns null object

Type typeOfT = typeof(T);
T obj = Activator.CreateInstance<T>();

PropertyInfo[] propInfo = typeOfT.GetProperties();

foreach (PropertyInfo property in propInfo)
{

     object[] colName = roperty.GetCustomAttributes(typeof(FieldAttributes), false);
     /// colName has no values.
}

What am I missing?

Answer 1

typo: should be typeof(FieldAttribute). There is an unrelated system enum called FieldAttributes (in System.Reflection, which you have in your using directives, since PropertyInfo resolves correctly).

Also, this is easier usage (assuming the attribute doesn't allow duplicates):

var field = (FieldAttribute) Attribute.GetCustomAttribute(
          property, typeof (FieldAttribute), false);
if(field != null) {
    Console.WriteLine(field.Field);
}