嵌入式语句不能是声明或带标签的语句 [英] Embedded statement cannot be a declaration or labeled statement

问题描述

我正在尝试使用声明身份asp.net创建一个用户 创建声明身份用户时出现此错误.

I am trying to create a user using claim identity asp.net I get this error while creating claims identity user.

  ApplicationUser user = new ApplicationUser { 
                        EmailConfirmed = true, 
                        UserName = model.myUser.Email,
                        Email = model.myUser.Email ,
                        PhoneNumber = model.myUser.PhoneNumber,
                        PhoneNumberConfirmed = true,
                        UserImagePath = model.myUser.UserImagePath,
                        FirstName= model.myUser.FirstName,
                        LastName = model.myUser.LastName,
                        DateOfBirth = model.myUser.DateOfBirth,
                        Culture = model.myUser.Culture,
                        Role = model.myUser.Role
                    };

但是代码是

var user= new ApplicationUser { 

                            UserName = model.myUser.Email,
                            Email = model.myUser.Email ,

                        };

它工作得很好，所以我想知道哪里出了问题

it worked perfectly, so i want to know what is wrong

推荐答案

在发布代码之前，您有一条声明(例如， if 或 while ). ，没有大括号.

You have a statement (if or while, for example), right before the code you posted, without curly braces.

例如:

if (somethingIsTrue) 
{    
   var user= new ApplicationUser { 
       UserName = model.myUser.Email,
       Email = model.myUser.Email ,
   };
}

是正确的，但是下面的代码:

is correct, but the code below:

if (somethingIsTrue) 
   var user = new ApplicationUser { 
      UserName = model.myUser.Email,
      Email = model.myUser.Email ,
   };

将导致CS1023:嵌入式语句不能是声明或带标签的语句.

will result in CS1023: Embedded statement cannot be a declaration or labeled statement.

根据@codefrenzy所述，原因是新声明的变量将立即超出范围，除非将其包含在可以从中访问它的block语句中.

The reason, according to @codefrenzy, is that the newly declared variable will immediately go out of scope, unless it is enclosed in a block statement, where it can be accessed from.

在以下情况下，编译仍会通过.

The compilation will pass in the following cases though.

如果您仅初始化类型的新实例，而不声明新变量:

If you only initialize a new instance of a type, without declaring a new variable:

if (somethingIsTrue) 
   new ApplicationUser { 
       UserName = model.myUser.Email,
       Email = model.myUser.Email ,
   };

或者如果您为现有变量分配值:

or if you assign a value to an existing variable:

ApplicationUser user;

if (somethingIsTrue) 
   user = new ApplicationUser { 
       UserName = model.myUser.Email,
       Email = model.myUser.Email ,
   };

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