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   源码介绍

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using System;
using System.Diagnostics;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace FrameworkEnvironment
{
    public static class EnvironmentMain
    {

        #region 事件
        /// <summary>加载中
        /// 加载中
        /// </summary>
        public static event Action<string> Loading;
        private static void OnLoading(string obj)
        {
            Action<string> handler = Loading;
            if (handler != null) handler(obj);
        }

        /// <summary>结束加载
        /// 结束加载
        /// </summary>
        public static event Action<bool> EndLoad;
        private static void OnEndLoad(bool obj)
        {
            Action<bool> handler = EndLoad;
            if (handler != null) handler(obj);
        }

        /// <summary>显示加载面板
        /// 显示加载面板
        /// </summary>
        public static event Action ShowSplash;
        private static void OnShowSplash()
        {
            Action handler = ShowSplash;
            if (handler != null) handler();
        }

        #endregion

        /// <summary>开始加载环境
        /// 开始加载环境
        /// </summary>
        /// <param name="sc"></param>
        public static void StartLoading(SynchronizationContext sc)
        {
            var task = new Task(() =>
            {
                LoadingFrameWork(s =>
                {
                    if (string.IsNullOrEmpty(s)) return;
                    sc.Post(ddd => OnLoading(s), null);
                });
                sc.Post(dd => OnEndLoad(true), null);
            });

            sc.Send(d =>
            {
                task.Start();
                OnShowSplash();
            }, null);
        }

        /// <summary>加载运行环境
        /// 加载运行环境
        /// </summary>
        private static void LoadingFrameWork(Action<string> action)
        {
            const string args = "executequeueditems";
            const string ngenName = "ngen.exe";
            const string frameWork64 = @"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\";
            const string frameWork32 = @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\";

            string[] dos = { frameWork64, frameWork32 };
            foreach (var @do in dos)
            {
                string dosStr = @do;
                var exists = Directory.Exists(dosStr);
                if (!exists) continue;
                dosStr = dosStr   ngenName;
                ExecuteDos(dosStr, args, action);
            }
        }

        /// <summary>执行命令
        /// 执行命令
        /// </summary>
        private static void ExecuteDos(string exePath, string args, Action<string> action)
        {
            var process = new Process();
            process.StartInfo.FileName = exePath;
            process.StartInfo.Arguments = args;
            process.StartInfo.UseShellExecute = false;
            process.StartInfo.RedirectStandardInput = true;
            process.StartInfo.RedirectStandardOutput = true;
            process.StartInfo.CreateNoWindow = true;
            process.Start();
            process.OutputDataReceived  = (ps, pe) =>
            {
                if (action != null)
                {
                    action(pe.Data);
                }
            };
            process.BeginOutputReadLine();
            process.WaitForExit();
        }
    }
}