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Hello folks, my first post after years of lurking. The burden of the out-of-date articles on the Internet around .NET technologies is getting really heavy, and I can't quite locate reliable info, and I'm blocked on this.
I have asked the question on Stack Overflow, but the quality of the related answers is not encouraging me I'll get a bite. I guess all the real veterans hang out here!
I basically would like to force the UAC prompt to do some stuff as admin. I understand I will need a new process and must arrange IPC between the unprivileged-parent and the privileged-child (sounds familiar  ).
But I don't know if using
System.Diagnostics.ProcessStartInfo.verb = "runas" is the go, or if there is a Better Way Today. There are articles here and there about using the app.manifest which I can't seem to apply in VS 2019 - they feel defunct. (.NET Framework itself is starting to feel defunct, actually).
TIA
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Either the runas verb or an application manifest should work.
I'm not sure whether you'll be able to use IPC from the unelevated app to the elevated app. And if you can, you need to be extremely careful to secure it, so that it can't be used by malicious code as an elevation of privilege attack vector.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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Richard Deeming wrote: I'm not sure whether you'll be able to use IPC from the unelevated app to the elevated app.
Thanks Richard. For IPC, I hope I can use anonymous named pipes between the processes, per Microsoft's own How to Use Anonymous Pipes for Local Interprocess Communication. I imagine the privileged-child will be able to connect to the pipe created by the unprivileged-parent without issue if it has the token.
To pass the result of (new AnonymousPipeServerStream(/*etc*/)).GetClientHandleAsString() to the privileged-child, I will pass it as a command-line argument.
I suppose a malicious application could create its own named-pipe, invoke MY privileged-child app to fool the user into approving the UAC prompt (abusing my good name) and then control the privileged-child process from their malicious app. Fortunately I only really need the pipe for signalling the privileged-child to stop ... not to direct the action of the privileged-child.
Since I'll be working with ProcessStartInfo anyhow, adding a 'runas' verb is 'within easy reach'.
It then becomes a question of whether anything is gained by going declarative. Yes, if I needed the 'verb' for a different purpose, I guess. Or if I wanted the privileged-child code to be useful to an audience wider than my app. No, if I am happy for my privileged-child to fail unless properly invoked by MY code (heck, I could even take steps to make it a lot harder for said malicious actor!), or if I don't wish to draw the attention of malicious parties by marking it 'hey, I run as admin!'.
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I'll go ahead and try these things right away. I solved my app.manifest issues by ticking the 'NET Desktop Development' profile in the VS 2019 installer! 
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Hi I have an Entity as below:
public class Complaint
{
public Complaint()
{ }
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int Id { get; set; }
[Index("IX_UniqueConstraintComplaint", 1, IsUnique = true)]
public int? InspectionRequestId { get; set; }
public InspectionRequest InspectionRequest { get; set; }
[Index("IX_UniqueConstraintComplaint", 2, IsUnique = true)]
public int? InspectionResultId { get; set; }
public InspectionResult InspectionResult { get; set; }
[Index("IX_UniqueConstraintComplaint", 3, IsUnique = true)]
public int? CaseId { get; set; }
public Case Case { get; set; }
[Index("IX_UniqueConstraintComplaint", 4, IsUnique = true)]
public string ComplaintId { get; set; }
}
I want to rename this entity as below with couple of column names changed, can somebody please help me in this
public class RequestResultCaseComplaint
{
public RequestResultCaseComplaint()
{ }
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int RequestResultCaseComplaintId { get; set; }
[Index("IX_UniqueConstraintComplaint", 1, IsUnique = true)]
public int? InspectionRequestId { get; set; }
public InspectionRequest InspectionRequest { get; set; }
[Index("IX_UniqueConstraintComplaint", 2, IsUnique = true)]
public int? InspectionResultId { get; set; }
public InspectionResult InspectionResult { get; set; }
[Index("IX_UniqueConstraintComplaint", 3, IsUnique = true)]
public int? CaseId { get; set; }
public Case Case { get; set; }
[Index("IX_UniqueConstraintComplaint", 4, IsUnique = true)]
[Required]
[StringLength(20)]
public string ComplaintId { get; set; }
}
I previously had the entity as in the 2nd case, unfortunately I removed it, and now when I am trying to create with same name again, whether EF has cached it I don't know, but EF is not recognizing it, can somebody please help me in this, does EF cache the already created Entities with same names, how can we clean it?
Its not allowing me to create the same Entity again even after deleting the Entity and trying regenerate again.
Or at least can I rename already existing Entity and its columns, how can I do it any help please?
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If you're still in development, and using Code First, then just nuke the database / tables.
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food
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Funny - I don't have nuke weapons ,
I did achieve it, I manually wrote up and down methods and ran them against, challenging, scary but did it, thank you both for the help buddies.
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Message Closed
modified 7-Sep-20 14:02pm.
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Change your username, or be kicked off the site.
That is unacceptable in a professional environment.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Gone.
The difficult we do right away...
...the impossible takes slightly longer.
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On top of your username issues, the question is off-topic for this site.
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Hi,
I am building desktop application with VB.NET. Have following query
Scenario 1:
1. Settings Form contains 2 sections
2. first section contains text boxes to enter data
3. Have button, popup window will open on clicking the same. User enter some data in popup window and click save. Want to display popup window data in settings form - datagridview. Please note still data is not saved to database.
4. Once user clicks 'Save' button of Settings window then all data of text boxes and datagridview is stored in database.
However, when user reopens this Settings form, I want data should be populated from database to text boxes and datagridview. Post this, want to display popup window data if user adds any new data.
Please help/
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hiruthere wrote: Please help
You need to explain exactly what help you need. The above post just gives a list of requirements.
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Hi,
We are working on a project, where there are 2 different web applications are used by the same user. Hence we need Single Signon (SSO), so that when a user is logged in one application opens the second application, it should not ask for relogin, if the user have permissions.
Our web application is on .net core 3.1
We had implemented SSO using identity 4. we had refereed a sample application (.net core 2.0 and identity 4 server 2.0) and implemented the same.
Issues facing
1. Even if a user have permissions for both the applications and logged in to 1 application, when he tries to open the 2nd application, it asks to signin again(ie, it is not authorized)
2. For admin user, which have all the permission, it fails to open the application due to cookie memory issue.
We have tried to upgrade the identity 4 server to the latest (4.1), but it through run time error.
Please help to resolve the issue.
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If you're talking about IdentityServer[^], you're best source of information is going to be the people that wrote it. There's a "Contact" link in the upper right corner of the site.
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Follow the cookie or the token.
How Does Single Sign-On (SSO) Work? | OneLogin
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food
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Hi,
I am building desktop application using .net framework. Front end will be deployed in client PC and database will be kept in LAN server. In this case which is best database to be used.
Since I am new to client-server implementation how to make sure connection string while installing front end in client PC and is there any instance of database needs to installed before establishing connectivity. I don't want to too much dependencies while installation since client is startup company and not able to invest on licence databases.
Regards,
Rahul
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You could use SQL Server Express, or google for free\open source database solutions, but using SQL Express would make it easier to go to proper SQL Server when they can afford it. However I would strongly question any company, start-up or not, that can't afford to properly license software and I'd also be wary working for such a company.
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What SiteCore said - SQL Express will give you 4gb of storage and limited connections but will allow you to easily upgrade to a licenced version when you outgrow the express.
I do hope you are doing this pro bono or as a training/entry exercise, it does sound dodgy.
Never underestimate the power of human stupidity -
RAH
I'm old. I know stuff - JSOP
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Packaging will be the least of your problems: "I am building..."
It was only in wine that he laid down no limit for himself, but he did not allow himself to be confused by it.
― Confucian Analects: Rules of Confucius about his food
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Você pode usar o MYSQl, e gratuito e atende bem para uma empresa de pequeno ou médio porte.
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I see some articles on migrating away from .NET remoting, but so far I haven't found anything that flat out says I shouldn't use it for new projects.
Does anyone know the state of the world regarding .NET remoting in say... DNF 4.72?
I have no requirements to support Core because my project involves a window service that does interprocess communication. I want to use .NET remoting for that. It's not internet facing, it's purely for IPC.
Real programmers use butterflies
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It doesn't seem to be explicitly obsolete, but it's definitely a legacy technology, and not meant for new projects.
.NET Remoting is a legacy product that is supported only for backward compatibility. ... We recommend existing Remoting applications be migrated to newer and more secure technologies.
.NET Remoting was identified as a problematic architecture. It's used for cross-AppDomain communication, which is no longer supported. Also, Remoting requires runtime support, which is expensive to maintain. For these reasons, .NET Remoting isn't supported on .NET Core, and we don't plan on adding support for it in the future.
It looks like Remoting won't be ported to .NET 5 either.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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And in addition to the above question:
(1) Is WCF deprecated? (I thought it was deprecated but perhaps I'm wrong).
(2) What is the latest recommended relatively high speed inter-process communication standard?
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