1 files changed, 30 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.AspNet/IOpenAuthDataProvider.cs b/src/DotNetOpenAuth.AspNet/IOpenAuthDataProvider.cs
new file mode 100644
index 0000000..12d929d
--- /dev/null
+++ b/src/DotNetOpenAuth.AspNet/IOpenAuthDataProvider.cs
@@ -0,0 +1,30 @@
+//-----------------------------------------------------------------------
+// <copyright file="IOpenAuthDataProvider.cs" company="Microsoft">
+//     Copyright (c) Microsoft. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace DotNetOpenAuth.AspNet {
+	/// <summary>
+	/// Common methods available on identity issuers.
+	/// </summary>
+	public interface IOpenAuthDataProvider {
+		#region Public Methods and Operators
+
+		/// <summary>
+		/// Get a user name from an identity provider and their own assigned user ID.
+		/// </summary>
+		/// <param name="openAuthProvider">
+		/// The identity provider.
+		/// </param>
+		/// <param name="openAuthId">
+		/// The issuer's ID for the user.
+		/// </param>
+		/// <returns>
+		/// The username of the user.
+		/// </returns>
+		string GetUserNameFromOpenAuth(string openAuthProvider, string openAuthId);
+
+		#endregion
+	}
+}