visual studio 容器工具首次加载太慢 vsdbg\vs2017u5 exists, deleting 的解决方案

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========== 正在准备容器 ==========
正在准备 Docker 容器...
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -NonInteractive -NoProfile -WindowStyle Hidden -ExecutionPolicy RemoteSigned -File "C:\Users\MESTC\AppData\Local\Temp\GetVsDbg.ps1" -Version vs2017u5 -RuntimeID linux-x64 -InstallPath "C:\Users\MESTC\vsdbg\vs2017u5"
Info: Using vsdbg version '16.0.20412.1'
Info: Using Runtime ID 'linux-x64'
Info: C:\Users\MESTC\vsdbg\vs2017u5 exists, deleting.

如上情况 感兴趣可以打开  GetVsDbg […]

C# this关键字的四种用法(转)

用法一  this代表当前类的实例对象

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namespace Demo
{
    public class Test
    {
        private string scope = "全局变量";
        public string getResult()
        {
            string scope = "局部变量";
　　　　　　　// this代表Test的实例对象
　　　　　　　// 所以this.scope对应的是全局变量
　　　　　　  // scope对应的是getResult方法内的局部变量
            return this.scope + "-" + scope;
        }
    }
 
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Test test = new Test();
                Console.WriteLine(test.getResult());
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }
            finally
            {
                Console.ReadLine();
            }
 
        }
    }
}

&n […]

基于dynamic，动态给强类型Model扩展属性

直接上代码

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            List<TestModel> testList = new List<TestModel>();
            testList.Add(new TestModel { Id = 1, Name = "A" });
            testList.Add(new TestModel { Id = 2, Name = "B" });
            testList.Add(new TestModel { Id = 3, Name = "C" });
 
            List<dynamic> test = new List<dynamic>();
            foreach (var item in testList)
            {
                dynamic dobj = new System.Dynamic.ExpandoObject();
                var dic = (IDictionary<string, object>)dobj;
 
                var t = item.GetType();
                var properties = t.GetProperties();
                // 循环赋值原Model中的值
                foreach (var propertyInfo in properties)
                {
                    var propertyName = propertyInfo.Name;
                    dic[propertyName] = propertyInfo.GetValue(item);
                }
 
                // 动态扩展属性
                dic["Age"] = 3;
 
                test.Add(dic);
            }

  示例Model [ […]

asp.net获取IP

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        /// <summary>
        /// get ip
        /// </summary>
        /// <returns></returns>
        public static string GetIp()
        {
            var context = HttpContext.Current;
            return context.Request.ServerVariables["HTTP_X_REAL_IP"]
                   ?? context.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]
                   ?? context.Request.ServerVariables["REMOTE_ADDR"]
                   ?? "unknow";
        }