Email address validation in C# MVC 4 application: with or without using Regex

This question already has an answer here: Email address validation using ASP.NET MVC data type attributes 6 answers You need a regular expression for this. Look here. If you are using .net Framework4.5 then you can also use this. As it is built in .net Framework 4.5. Example [EmailAddress(ErrorMessage = "Invalid Email Address")] public string Email { get; set; } Expanding on Ehsan's

C#MVC 4应用程序中的电子邮件地址验证:使用或不使用Regex

这个问题在这里已经有了答案: 使用ASP.NET MVC数据类型属性进行电子邮件地址验证6个答案 你需要一个正则表达式。 看这里。 如果你使用的是.NET Framework4.5,那么你也可以使用它。 因为它是在.net Framework 4.5中构建的。 例 [EmailAddress(ErrorMessage = "Invalid Email Address")] public string Email { get; set; } 扩大Ehsan的答案.... 如果您使用的是.Net Framework 4.5,那么您可以使用简单的方法在代码

How can i access the value of a local variable from within an expression tree

By examining an expression tree i can get the value of a constant, instance field and property but not a local variable defined in a method. Executing the following will output 1, 2, 3 (from the constant, instance field and property) then an exception as i don't know how to get the instance on which the FieldInfo is declared in order to call GetValue() for the local variable. using System;

我如何从表达式树中访问局部变量的值

通过检查表达式树,我可以得到一个常量,实例字段和属性的值,但不是在方法中定义的局部变量。 执行以下操作将输出1,2,3(来自常量,实例字段和属性),然后是一个异常,因为我不知道如何获取FieldInfo声明的实例,以便为本地调用GetValue()变量。 using System; using System.Linq.Expressions; using System.Reflection; namespace Example { class Program { private int _intField = 2; stati

What triggers Azure Functions to reload the referenced assemblies?

I've been referencing external assemblies trying to work around the issue noted here: Azure Function Cannot Load Portable Assembly. However, often my function does not seem to reflect the changes made to the functionNamebin assemblies. I've intentionally referenced the wrong assemblies, and then reran the function. I experience no change to what is logged (and I'm logging exception

什么触发Azure函数来重新加载引用的程序集?

我一直在引用外部程序集,试图解决此处提到的问题:Azure函数无法加载便携式程序集。 但是,我的函数通常似乎没有反映对functionName bin程序集所做的更改。 我故意引用了错误的程序集,然后重新调用函数。 我对记录的内容没有任何改变(并且正在记录异常)。 我如何强制完成Azure功能的重新加载? 我能以某种方式看到Azure函数作为其“已加载”程序集吗? 如果唯一改变的是实现,而不是程序集标识(名称,版本等),那么

is DBNull vs. DBNull.Value.Equals()

I am curious what are the pros and cons of using if(some_value is DBNull) versus if(DBNull.Value.Equals(some_value)) . Personally i prefer if(some_value is DBNull) because i find it more readable. I know Microsoft recommends using if(DBNull.Value.Equals(some_value)) according to https://msdn.microsoft.com/en-us/library/system.dbnull%28v=vs.110%29.aspx. I would go for the DBNull.Value.Equals w

是DBNull与DBNull.Value.Equals()

我很好奇什么是使用if(some_value is DBNull)与if(DBNull.Value.Equals(some_value)) 。 我个人更喜欢if(some_value is DBNull)因为我觉得它更具可读性。 我知道微软建议根据https://msdn.microsoft.com/en-us/library/system.dbnull%28v=vs.110%29.aspx使用if(DBNull.Value.Equals(some_value)) 。 我会去DBNull.Value.Equals方式。 为什么? 怎么一回事,因为is将检查对平等的类型。 它必须查看左手类型,并将其与右

Only on azure: Could not create SSL/TLS secure channel

I run an application on the Azure application Standard: 1 Small plan. Framework is 4.6.1 This application is calling a SSL secured API. The SSL is published by StartCom Class 1 DV Server CA, my local browser tells me that the certificate is valid. If I run the application on my local machine everything works. However, when deployed to azure it fails with follwing error: System.Net.Http.H

仅在azure上:无法创建SSL / TLS安全通道

我在Azure应用程序Standard:1 Small plan上运行应用程序。 框架是4.6.1 此应用程序正在调用SSL安全的API。 SSL由StartCom Class 1 DV Server CA发布,我的本地浏览器告诉我该证书是有效的。 如果我在本地机器上运行应用程序,一切正常。 但是,在部署到Azure时,会失败并显示以下错误: System.Net.Http.HttpRequestException:发送请求时发生错误。 ---> System.Net.WebException:请求被中止:无法创建SSL / TLS

Application crash after moving from .NET 3.5 to .NET 4.0

Recently I upgraded .NET from 3.5 to 4.0 in my desktop application. On my development machine it works fine. On some production machines it crashes right at start. Windows 8.1, Windows 7 Problem Event Name: APPCRASH Application Name: myApp.exe Application Version: 2.0.0.0 Application Timestamp: 553a56e8 Fault Module Name: KERNELBASE.dll Fault Module Version: 6.3.9600.17415 Faul

从.NET 3.5迁移到.NET 4.0后,应用程序崩溃

最近我在桌面应用程序中将.NET从3.5升级到4.0。 在我的开发机器上,它工作正常。 在一些生产机器上,它一开始就崩溃了。 Windows 8.1,Windows 7 问题事件名称:APPCRASH 应用程序名称:myApp.exe 应用程序版本:2.0.0.0 应用程序时间戳:553a56e8 故障模块名称:KERNELBASE.dll 故障模块版本:6.3.9600.17415 故障模块时间戳:54504ade 例外代码:e0434f4d 例外抵消:00014598 OS版本:6.3.9600.2.0.0

KERNELBASE.dll throws application stopped working

I am running a Deployed Winform application developed in .NET 3.5 .While opening the application windows throws Application Stopped working . My EventLog shows Faulting application name: MyApp.exe, version: 1.0.0.0, time stamp: 0x540175e5 Faulting module name: KERNELBASE.dll, version: 6.1.7601.17625, time stamp: 0x4de876e8 Exception code: 0xe0434352 Fault offset: 0x0000d36f Faulting process id

KERNELBASE.dll引发应用程序停止工作

我正在运行一个在.NET 3.5中开发的Deployed Winform应用程序。在打开应用程序窗口时抛出应用程序停止工作。 我的EventLog显示 错误应用程序名称:MyApp.exe,版本:1.0.0.0,时间戳:0x540175e5错误模块名称:KERNELBASE.dll,版本:6.1.7601.17625,时间戳:0x4de876e8异常代码:0xe0434352错误偏移:0x0000d36f错误进程ID:0x11c4错误应用程序启动时间:0x01cfc661651bac27错误的应用程序路径:C: Program Files MyApp M

How to troubleshoot error: “Program stopped working APPCRASH”

I have a log and a try catch in this console app, but does not seem to get that far. Works fine on my dev machine, does not on Win Server 2008. Event viewer has the same info as below. I understand there's not much to go on here, but that's what I know. All prev deployments worked, so I'm at a loss. Please don't close, and help me solve this problem. I will answer any ques

如何解决错误:“程序停止工作APPCRASH”

我在这个控制台应用程序中有一个日志和一个try catch,但似乎没有那么远。 在我的开发机器上工作良好,不在Win Server 2008上。事件查看器具有与下面相同的信息。 我知道这里没有太多可以继续,但这就是我所知道的。 所有prev部署工作,所以我不知所措。 请不要关闭,并帮我解决这个问题。 我会回答我的任何问题。 谢谢。 Description: Stopped working Problem signature: Problem Event Name: APPCRASH Ap

.NET application cannot start and receive XamlParseException

I wrote an app that can install and work on my development PC (a Window 7). Development Environment: Window 7, VS2010 WPF C# with both .NET 4 and .NET 3.5 installed On other client computer (XP SP3, 2 and 1), it install with no error, but can not start. In task manager, I can see the application takes up memory briefly before closing by itself. I had made sure .NET 3.5 consistency across m

.NET应用程序无法启动并收到XamlParseException

我写了一个应用程序,可以安装和使用我的开发PC(一个Window 7)。 开发环境:Window 7,VS2010安装了.NET 4和.NET 3.5的 WPF C# 在其他客户端计算机上(XP SP3,2和1),它安装时没有错误,但无法启动。 在任务管理器中,我可以看到应用程序在自己关闭之前暂时占用内存。 我已经通过以下方式确保了我的开发PC和各种客户端XP机器上的.NET 3.5一致性: 该应用程序的目标是.NET 3.5 (或3.5客户端配置文件 ) 使用VS201

When does a Perl script need to call `tzset` before calling `localtime`?

I recently learned how to change the timezone returned by localtime in Perl. use POSIX qw(tzset); print localtime . "n"; $ENV{TZ} = 'America/Los_Angeles'; print localtime . "n"; tzset; print localtime . "n"; Outputs Wed Apr 15 15:58:10 2009 Wed Apr 15 15:58:10 2009 Wed Apr 15 12:58:10 2009 Notice how the hour only changes after calling tzset . This is perl, v5.8.8 built for x86_64-linux-thre

在调用`localtime`之前,Perl脚本何时需要调用`tzset`?

最近我学习了如何在Perl中更改localtime返回的时区。 use POSIX qw(tzset); print localtime . "n"; $ENV{TZ} = 'America/Los_Angeles'; print localtime . "n"; tzset; print localtime . "n"; 输出 Wed Apr 15 15:58:10 2009 Wed Apr 15 15:58:10 2009 Wed Apr 15 12:58:10 2009 注意在调用tzset之后小时只是变化。 This is perl, v5.8.8 built for x86_64-linux-thread-multi 但是,在我的系统中, Fri Jul 8 19:00:51