2023-12-28 标签:C#,EF,报错,Missing Colum Discriminator,On entity,WeighDatas,NotMapped,数据库,子类,winform,EntityFramework,Extensions,sqlserver,Z.EntityFramework.Extensions

C#winform开发时,使用Z.EntityFramework.Extensions进行批次更新插入到sqlserver数据库时,报错:An error occured while resolving mapping by name.Missing Colum : Discriminator On entity

2022-03-15 标签:远程桌面,,出现内部错误,An internal error occurred,解决方法,Remote Desktop,RDP

今天在通过域名进行远程桌面出错:出现了内部错误(An internal error has occurred),如图:但是通过ip却能正常远程.很是奇怪.记得之前也遇到过类似的问题,解决了,可现在又出来了.现在先记着这次的解决方法吧.出现些错误的原因一般是低版本的系统远程高版本的系统

2020-11-08 标签:C#,https,请求,出错,Could,establish,trust,relationship,SSL,TLS,secure,channel,证书,summary,static,certificate,信任

当我在用C#.NET命名空间下获取URL的时候，提示如下错误：The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

2020-07-05 标签:You,cannot,use,single,statement,control,flow,statements,CSHTML,pages,isLoggedIn,user,ldquo,rdquo,语句,cshtml,xxx,Hello,页面

今天在写cshtml页面报错：An error occurred during the compilation of a resource required to process this request. Please review the following specific err

2020-06-12 标签:javascript,修改,注册表,实例,代码,有关,安全,设置,的说,路径,hkey,current,user,software,microsoft,windows,internet

注册表有关安全设置项的说明：注册表路径：HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones1.Zones 项包含表示为计算机定义的每个安全区域的项。默认情况下，定义以下 5个区域（编号

2020-05-29 标签:C#,控制台,倒计时,打印,剩余时间,显示,一行,Console,seconds,休眠,var,timeLeft,SetCursorPosition,summary,param,线程,top,left,COUNT,System

今天遇到个需求,在C#控制台做倒计时,需要打印出倒计时剩余时间,且倒计时部分只显示在一行要怎么做呢?C#在console中可以设置控制台的光标位置,用方法Console.SetCursorPosition().所以只显示在一行的倒计时,就在输出前记录当前Console控制台的

2020-05-22 标签:Entity,Framework,表名,设置,生成,复数,TasksDaily,modelBuilder,OnModelCreating,DbModelBuilder,形式,TasksDailies,protected,override,void,Conventions,Model,去除

C# Entity Framework表名设置不生成复数(ef 表名不生成复数)今天进行新建表查询报错:An error occurred while executing the command definition. See the inner exception for details.具体原因是:对

2020-05-10 标签:HttpClient,未能,创建,SSL,TLS,安全,通道,SecurityProtocolType,ServicePointManager,如下,httpClient,https,delegate,return,true,SecurityProtocol,Ssl3

今天用httpClient进行获取https内容出错如下:HttpClient 未能创建 SSL/TLS 安全通道.应该是证书的问题.添加如下代码即可.ServicePointManager.ServerCertificateValidationCallback = delegate { retur

2020-04-11 标签:sqlserver,游标,简单,示例,declare,id,varchar,20,name,cur,cursor,select,substring,n,ame,temp,open

Declare @Id varchar(20) Declare @Name varchar(20) Declare Cur Cursor For select substring(id,0,7) as id,name from temp1 Open Cur Fetch next From Cur I

2020-04-11 标签:jscript,启动,sqlserver,set,sqldmo,loginsecure,true,name,start,false

strDBServerName = "." Set objSQLServer = CreateObject("SQLDMO.SQLServer") objSQLServer.LoginSecure = True objSQLServer.Name = strDBServerName objSQLSe