小编OzB*_*Bob的帖子

在新的ASPNET MVC应用程序中,您现在可以免费获得AspIdentity的好东西.

这里有一条无害的小插件"插入你的电子邮件服务".

所以我做了:

public class EmailService : IIdentityMessageService
{
    private static My.Services.IEmailService _emailservice;

    public EmailService(Insolvency.Services.IEmailService emailservice)
    {
        _emailservice = emailservice;
    }

    public Task SendAsync(IdentityMessage message)
    {
        _emailservice.SendEmail(message);
       return Task.FromResult(0);
    }
}

而现在的喜悦:

public class ApplicationUserManager : UserManager<ApplicationUser>
{
    private My.Services.IEmailService _emailservice;

    public ApplicationUserManager(IUserStore<ApplicationUser> store, My.Services.IEmailService emailservice): base(store)        
    {
        _emailservice = emailservice;
    }

    public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
    {
        var manager = new ApplicationUserManager(new UserStore<ApplicationUser>(context.Get<ApplicationDbContext>()), _emailservice);
       ...

当Owin踢它时,调用Startup.Auth.cs中的Create on ApplicationUserManager :

public partial class Startup 
   { …

try-convert -w Test.csproj --target-framework netstandard2.0

结果是：

Multiple installs of MSBuild detected please select one:

...
Instance 6
    Name: .NET Core SDK
    Version: 3.0.100
    MSBuild Path: C:\Program Files\dotnet\sdk\3.0.100-preview7-012821\

但指定这些路径之一

try-convert -w Test.csproj --target-framework netstandard2.0 -m "C:\Program Files\dotnet\sdk\3.0.100-preview7-012821\"

结果是 ：

例外情况

System.ArgumentException: Directory "C:\Program Files\dotnet\sdk\3.0.100-preview7-012821"" does not exist (Parameter 'msbuildSearchPaths')
A directory or directories in "msbuildSearchPaths" do not exist

如何通过超链接打开外部浏览器，在浏览器中是target='_top'。

WPF netcore 3.1 应用程序中的代码是什么？

1. 使用命令参数

   <TextBlock>
       <Hyperlink CommandParameter="{Binding ExternalURL}"
                  Command="{Binding NavHomeViewCommand}" >Open in Browser ...
       </Hyperlink>
   </TextBlock>
   

   Run Code Online (Sandbox Code Playgroud)

2. 更改 DelegateCommand 以使用对象参数（使用 prismlibrary mvvm 模式）

   navHomeViewCommand = new DelegateCommand<object>(NavHomeView);
   

   Run Code Online (Sandbox Code Playgroud)

3. 命令属性：

   public string ExternalURL{ get => "https://www.google.com/";}
   private readonly ICommand navHomeViewCommand;
   public ICommand NavHomeViewCommand
   {
       get { return navHomeViewCommand; }
   }
   

   Run Code Online (Sandbox Code Playgroud)

4. 打开浏览器

   private void NavHomeView(object ID)
   {
       if(obj is string destinationurl)
           System.Diagnostics.Process.Start("https://google.com");  //???????   
   }
   

   Run Code Online (Sandbox Code Playgroud)

抛出异常“未知的可执行文件”。

为什么在 OUTPUT/INSERTED 行中无法识别 INSERT 表别名？

编辑：链接表需要填充新的@Data_Table.Id（INSERTED.id，有效）和@NewData_Table.ObjectId（错误）。这样就可以创建一个具有从@Data_Table到@Tmp_Link_Table的外键关系的“链接表”。

编辑：

--Expected Output
--ObjectId  DataId
--11          3
--12          4
--13          5
--14          6

DECLARE @NewData_Table TABLE
(   [Data] VARCHAR(50) NOT NULL,
    ObjectId INT NOT NULL)

DECLARE @Tmp_Link_Table TABLE
(   ObjectId INT NOT NULL,
    DataId INT NOT NULL)

DECLARE @Data_Table TABLE
(   Id INT NOT NULL Identity(1,1),
    Data VARCHAR(50) NOT NULL)

-- create new objects
INSERT INTO @NewData_Table (ObjectId, Data) VALUES (11,'Data 1')
INSERT INTO @NewData_Table (ObjectId, Data) VALUES (12,'Data 2')
INSERT INTO @NewData_Table (ObjectId, …

好吧Linq'ers.试一试.

为什么会

NextActioners.Select(n => n.NextActioner.Equals(true));

错误地找到2条记录,

但

from a in NextActioners where (a.NextActioner.Equals(true)) select a;

正确找不到？

在我的Good'ol Linqpad上:

    public class AppPerson
        {
            public string PersonId;
            public string FullName;
            public string Role;
            public bool NextActioner;
        }

    void Main()
    {
        var NextActioners = new List<AppPerson> {
                    new AppPerson{FullName="testFullname1", NextActioner=false},
                    new AppPerson{FullName="testFullname2", NextActioner=false},
                };

        //Are all the NextActioners 'nextActioner' value false
        var noApproversSelected = NextActioners.All(a => a.NextActioner.Equals(false));
        Console.WriteLine("noApproversSelected={0}",noApproversSelected.ToString());//Result = true

        var listOfApprovers = from a in NextActioners
                        where (a.NextActioner.Equals(true))
                        select a;
        Console.WriteLine("listOfApprovers.Count()={0}",listOfApprovers.Count().ToString());//Result = …