当我不知道类型时，可以获取属性的DataAnnotation显示名称吗？

Question

I am going to walk through the properties of items in an ICollection and at Compile Time will not necessarily know what type the items in the ICollection will be. I can get the Property name, but would like to get the DataAnnotation Display Name (if any).

How can I find the Display Name defined in DataAnnotations (if any) of an unknown type at run time?

So far I have this:

foreach (var thisSection in Report.ReportSections)
{
    reportBody.Append(thisSection.ReportSectionName + Environment.NewLine);

    if (thisSection.ReportItems != null)
    {
        var itemType = thisSection.ReportItems.GetType().GetGenericArguments().Single();

        var first = true;
        foreach (var prop in itemType.GetProperties())
        {
            if (!first) reportBody.Append(",");

            // This gives me the property name like 'FirstName'
            reportBody.Append(prop.Name); 

            try
            {
                // I'd like to get the Display Name from 
                // [Display(Name = "First Name")]
                var displayName = prop.GetCustomAttributes();
            }
            catch (Exception e)
            {

            }

            first = false;
        }
        reportBody.Append(Environment.NewLine);
    }
}

ReportSection is defined like this:

public interface IReportSection
{
    string ReportSectionName { get; }

    ICollection ReportItems { get; }
}

The ICollection could contain a collection of objects like this:

public class ProjectAffiliateViewModel
{
    public string Role { get; set; }

    [Display(Name = "First Name")]
    public string FirstName { get; set; }
}

For the Role property we would get Role , and for the FirstName property we would get First Name .

Answer 1

Like this:

DisplayAttribute attribute = prop.GetCustomAttributes(typeof(DisplayAttribute), false)
                                 .Cast<DisplayAttribute>()
                                 .SingleOrDefault();

string displayName = (attribute != null) ? attribute.Name : prop.Name;