CCNet.Build.Reconfigure.PageBuilder.ExportMap C# (CSharp) Method

		public Dictionary<string, Guid> ExportMap()
		{
			var map = m_pages
				.Select(p => p.ExportMap())
				.Where(i => i != null)
				.ToDictionary(i => i.Item1, i => i.Item2);

			var dup = map.GroupBy(i => i.Value).FirstOrDefault(g => g.Count() > 1);
			if (dup != null)
			{
				var list = String.Join(", ", dup.Select(i => "'" + i.Key + "'"));
				throw new InvalidOperationException(
					$"Project UID = {dup.Key.ToString("B").ToUpper()} seems not unique and belongs to projects {list}.");
			}

			return map;
		}