feature: add throw util

src/c#/GeneralUpdate.Core/Exceptions/ThrowExceptionUtility.cs

@@ -0,0 +1,48 @@
+using GeneralUpdate.Core.Exceptions.CustomArgs;
+using System;
+
+namespace GeneralUpdate.Core.Exceptions
+{
+    internal sealed class ThrowExceptionUtility
+    {
+        public static void ThrowGeneralUpdateException(ExceptionArgs args) 
+            => Throw<Exception>(args.ToString(), args);
+
+        #region Common
+
+        /// <summary>
+        /// Checks if an object is empty and throws an exception if it is
+        /// </summary>
+        /// <param name="obj"></param>
+        /// <param name="paramName"></param>
+        /// <exception cref="ArgumentNullException"></exception>
+        public static void ThrowIfNull(object obj, string paramName)
+        {
+            if (obj == null)
+                Throw<ArgumentNullException>(paramName);
+        }
+
+        /// <summary>
+        /// Checks if the string is empty or blank, and throws an exception if it is.
+        /// </summary>
+        /// <param name="str"></param>
+        /// <param name="paramName"></param>
+        /// <exception cref="ArgumentException"></exception>
+        public static void ThrowIfNullOrWhiteSpace(string str, string paramName)
+        {
+            if (string.IsNullOrWhiteSpace(str))
+                Throw<ArgumentException>("Parameter cannot be null or whitespace", paramName);
+        }
+
+        /// <summary>
+        /// Basic method of exception declaration.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="message"></param>
+        /// <param name="args"></param>
+        public static void Throw<T>(string message, params object[] args) where T : Exception, new()
+            => throw (T)Activator.CreateInstance(typeof(T), message, args);
+
+        #endregion
+    }
+}

src/c#/GeneralUpdate.Upgrad/Program.cs

@@ -50,11 +50,11 @@ private static void Main(string[] args)
                 .AddListenerMultiDownloadError(OnMultiDownloadError)
                 //整个更新过程出现的任何问题都会通过这个事件通知
                 .AddListenerException(OnException)
-                .Strategy<WindowsStrategy>().
-                Option(UpdateOption.Encoding, Encoding.Default).
-                Option(UpdateOption.DownloadTimeOut, 60).
-                Option(UpdateOption.Format, Format.ZIP).
-                LaunchTaskAsync();
+                .Strategy<WindowsStrategy>()
+                .Option(UpdateOption.Encoding, Encoding.Default)
+                .Option(UpdateOption.DownloadTimeOut, 60)
+                .Option(UpdateOption.Format, Format.ZIP)
+                .LaunchTaskAsync();
             });
             Console.Read();
         }