SocialPub/SocialPub.ClientModels/ValidatorAttributes/NoWhiteSpacesAttribute.cs

using SocialPub.ClientModels.Resources;

using System.ComponentModel.DataAnnotations;

namespace SocialPub.ClientModels.ValidatorAttributes
{
	[AttributeUsage(AttributeTargets.Property)]
	public class NoWhiteSpacesAttribute : ValidationAttribute
	{
		const string errorMessageResourceName = "EmptySpacesNotAllowed";
		readonly Type errorMessageResourceType = typeof(ErrorsResource);
		readonly string[] spaces = new[] { 
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			" ",
			"　",
		};

		public NoWhiteSpacesAttribute()
		{
			ErrorMessageResourceName = errorMessageResourceName;
			ErrorMessageResourceType = errorMessageResourceType;
		}

		public override bool IsValid(object value)
		{
			var str = value?.ToString();
			if (string.IsNullOrEmpty(str))
				return true;

			var hasWhiteSpace = false;
			try
			{
				foreach (var space in spaces)
				{
					hasWhiteSpace = str.Contains(space);
					if (hasWhiteSpace) break;
				}

				return !hasWhiteSpace;
			}
			catch (Exception ex)
			{
				Console.WriteLine(ex.Message);
				return false;
			}
		}
	}
}