Binding Bug Using Explicit Interface Implementation In C#.

[Brandon Driesen]

The following illustrates my question. Why is it when I bind to an a
collection of items whose interface implementation is explicit, there is
an error during the binding process wherein the error is as follows:

A field or property with the name 'FirstName' was not found on the
selected data source.

Seems to me there is a shortcoming of the Binding Process to Web
Controls. There should not be any impediment doing what I am doing since
there can be legitimate reasons for using explicit interface implementation.

ASPX Page

<asp:GridView ID="gvMain" runat="server" AutoGenerateCol umns="false">
<Columns>
<asp:BoundFie ld DataField="Firs tName" HeaderText="Fir st Name" />
<asp:BoundFie ld DataField="Last Name" HeaderText="Las t Name" />
</Columns>
</asp:GridView>

Code Behind

using System;
using System.Collecti ons.Generic;
using System.Web.UI;
using System.Web.UI.W ebControls;
namespace Research
{
public partial class _Default : Page
{
protected void Page_Load(objec t sender, EventArgs e)
{
if (!this.IsPostBa ck)
{
List<IReadOnlyU serDatausers = new
List<IReadOnlyU serData>();
users.Add(new User("John", "Doe"));
users.Add(new User("Jane", "Doe"));
users.Add(new User("Joe", "Bloggs"));
this.gvMain.Dat aSource = users;
this.gvMain.Dat aBind();
}
}
}

public interface IReadOnlyUserDa ta
{
string FirstName { get; }
string LastName { get; }
}

public class User : IReadOnlyUserDa ta
{
private string _givenNames;
private string _surname;

public User() { }

public User(string givenNames, string surname)
{
this._givenName s = givenNames;
this._surname = surname;
}

public string GivenNames
{
get { return this._givenName s; }
set { this._givenName s = value; }
}

public string Surname
{
get { return this._surname; }
set { this._surname = value; }
}

string IReadOnlyUserDa ta.FirstName
{
get { return this._givenName s; }
}

string IReadOnlyUserDa ta.LastName
{
get { return this._surname; }
}
}
}