Initial commit changing to on-demand child loading and validations

MediaBrowser.Common/Extensions/BaseExtensions.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Security.Cryptography;
+
+namespace MediaBrowser.Common.Extensions
+{
+    public static class BaseExtensions
+    {
+        static MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
+
+        public static Guid GetMD5(this string str)
+        {
+            lock (md5Provider)
+            {
+                return new Guid(md5Provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
+            }
+        }
+
+        public static bool ContainsStartsWith(this List<string> lst, string value)
+        {
+            foreach (var str in lst)
+            {
+                if (str.StartsWith(value, StringComparison.OrdinalIgnoreCase)) return true;
+            }
+            return false;
+        }
+    }
+}