Solved Solutions to computer programming Errors

private protected Functions used for Event Handler

.NET 7
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private protected Functions used for Event Handler in C-Sharp (code execution hangs in an Event Handler)

.NET 7
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Asp.Net Core EF Core Error: Cannot access a dispos

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Asp.Net Core EF Core Error: Cannot access a disposed object. A common cause of this error is disposing a context that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application. This may occur if you are calling Dispose() on the context, or wrapping the context in a using statement. If you are using dependency injection, you should let the dependency injection container take care of disposing context instances.

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System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: YOURSERVICE: Singleton ImplementationType: TheRepositoryConsumingTheInterface : Cannot consume scoped service 'DBContext' from singleton 'YourInterface'

.NET 7
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How to update SelectListItem based on Filtered Cat

.NET 7
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How to update SelectListItem based on Filtered Category from another DropDown menu in MVC AspNet 6 Razor Syntax

.NET 7
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What is Async Await in AspNet 6 (C-Sharp)

.NET 7
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What is Async Await in AspNet 6 (C-Sharp)

.NET 7
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Event Viewer cannot open the event log or custom v

QUESTIONS
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Event Viewer cannot open the event log or custom view. Verify that Event Log service is running or query is too long.

QUESTIONS
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How to use ContinueWith in an Async Function to Ma

.NET 5
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How to use ContinueWith in an Async Function to Make Sure Thread Executes One after the Other

.NET 5
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Asp.Net Core 3.1 2020 Conference Notes

EDUCATION
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Asp.Net Core 3.1 2020 Conference Notes

EDUCATION
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ERROR! The requested handler 'restart ufw' was not

SERVERS
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ERROR! The requested handler 'restart ufw' was not found in either the main handlers list nor in the listening handlers list

SERVERS
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HTTP Error 500.19 Internal server error

SERVERS
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HTTP Error 500.19 Internal server error

SERVERS
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Why Progressive Web Apps PWA Are The Future of Web

FRONT-END
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Why Progressive Web Apps PWA Are The Future of Web

FRONT-END
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Where is the Windows Event Viewer Log Folder locat

SERVERS
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Where is the Windows Event Viewer Log Folder located in Windows 11 and Windows 10

SERVERS
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Software Development Refactoring Wisdom I gained t

SOFTWARE DEVELOPMENT
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Software Development Refactoring Wisdom I gained through Reviewing My Own Code

SOFTWARE DEVELOPMENT
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SVT Robotics - .NET Core Take Home Recruiting Asse

SVT Robotics - .NET Core Take Home Recruiting Assessment

OTHER
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An Exception occurred in the database while saving

.NET 7
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An Exception occurred in the database while saving changes for context type 'ContextType' Microsoft.Data.SqlClient.SqlException (0x80131904)

.NET 7
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How to Find Event Logs folder on Windows

SERVERS
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How to Find Event Logs folder on Windows

SERVERS
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Microsoft Data SqlClient SqlException (0x80131904)

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Microsoft Data SqlClient SqlException (0x80131904) New transaction is not allowed because there are other threads running in the session

ENTITY FRAMEWORK
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What is domain driven design in Asp.Net 8?

RESEARCH
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What is domain driven design in Asp.Net 8?

RESEARCH
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The configured execution strategy 'SlqServerRetryi

.NET 7
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The configured execution strategy 'SlqServerRetryingExecutionStrategy' does not support user-initiated transactions. Use the execution strategy returned by DbContext.Database.CreateExecutionStrategy()' to execute

.NET 7
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InvalidOperationException, A second operation star

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InvalidOperationException, A second operation started on this context before a previous operation completed.

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InvalidOperationException: Cannot override the 'hr

MVC
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InvalidOperationException: Cannot override the 'href' attribute for <a>. An <a> with a specified 'href' must not have attributes starting with 'asp-route-' or an 'asp-action', 'asp-controller', 'asp-area', 'asp-route', 'asp-protocol', 'asp-host', 'asp-fragment', 'asp-page' or 'asp-page-handler' attribute.

MVC
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Lazy Loading Error Cannot read property 'fn' of un

FRONT-END
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Lazy Loading Error Cannot read property 'fn' of undefined

FRONT-END
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[Optimize Websites] Add Async to JavaScript to All

JAVASCRIPT
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[Optimize Websites] Add Async to JavaScript to Allow the DOM to continual executing

JAVASCRIPT
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JavaScript onclick() posting twice (Bug)

JAVASCRIPT
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JavaScript onclick() posting twice (Bug)

JAVASCRIPT
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Microsoft.EntityFrameworkCore.Database.Transaction

ENTITY FRAMEWORK
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Microsoft.EntityFrameworkCore.Database.Transaction[20205] An error occurred using a transaction.

ENTITY FRAMEWORK
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C-Sharp 11 Tips and Tricks

RESEARCH
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C-Sharp 11 Tips and Tricks

RESEARCH
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DotNet Software Development and Performance Tools

.NET 7
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DotNet Software Development and Performance Tools

.NET 7
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The mapped network drive could not be created beca

QUESTIONS
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The mapped network drive could not be created because the following error has occurred

QUESTIONS
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_context.SaveChanges is not working

ENTITY FRAMEWORK
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_context.SaveChanges is not working

ENTITY FRAMEWORK
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RoutePatternException: The route template separato

.NET 7
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RoutePatternException: The route template separator character '/' cannot appear consecutively. It must be separated by either a parameter or a literal value.

.NET 7
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Asp.Net Programming Bad Practices

ALGORITHMS
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Asp.Net Programming Bad Practices

ALGORITHMS
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[SOLVED!! Entity Framework Error Asp.Net Core 3.1]

.NET 7
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[SOLVED!! Entity Framework Error Asp.Net Core 3.1] InvalidCastException: Unable to cast object of type 'Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryable`

.NET 7
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InvalidOperationException: An error was generated

.NET 7
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InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation 'EntityName' specified in string based include path 'AnotherEntity Name'.

.NET 7
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RuntimeBinderException: Cannot implicitly convert

.NET 7
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RuntimeBinderException: Cannot implicitly convert type

.NET 7
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How to Sign Out a User when Session Expires in Asp

.NET 7
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How to Sign Out a User when Session Expires in AspNetCore

.NET 7
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Asp.Net Core 3.1 Entity Framwork Database Context

.NET 7
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Asp.Net Core 3.1 Entity Framwork Database Context Error: System.ObjectDisposedException: 'Cannot access a disposed object

.NET 7
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HTTP Error 500.30 - ASPNET CORE app failed to star

.NET 7
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HTTP Error 500.30 - ASPNET CORE app failed to start

.NET 7
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InvalidOperationException: There is no ViewData it

.NET 7
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InvalidOperationException: There is no ViewData item of type 'IEnumerable<SelectListItem>' that has the key 'Department'

.NET 7
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[Solved] Asp.Net Core C-Sharp Error: IOException:

.NET 7
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[Solved] Asp.Net Core C-Sharp Error: IOException: The process cannot access file because it is being used by another process

.NET 7
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RedisTimeoutException: Timeout awaiting response (

RedisTimeoutException: Timeout awaiting response (outbound=0KiB, inbound=0KiB, 5094ms elapsed, timeout is 5000ms),

OTHER
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InvalidOperationException: An error was generated

ENTITY FRAMEWORK
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InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError

ENTITY FRAMEWORK
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Application startup exception: System.InvalidOpera

MVC
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Application startup exception: System.InvalidOperationException: Cannot resolve scoped service from root provider

MVC
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SQL Query Like does not work with Spaces in a Stri

SQL
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SQL Query Like does not work with Spaces in a String

SQL
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ls: error while loading shared libraries: libpcre2

DOCKER-COMPOSE
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ls: error while loading shared libraries: libpcre2-8.so.0: cannot open shared object file: No such file or directory

DOCKER-COMPOSE
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'IHtmlHelper dynamic' has no applicable method nam

.NET 7
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'IHtmlHelper dynamic' has no applicable method named 'PartialAsync'

.NET 7
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An error was generated for warning 'Microsoft.Enti

ENTITY FRAMEWORK
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An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation specified in string based include path

ENTITY FRAMEWORK
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Async in Event Handler

private protected Functions used for Event Handler

private protected Functions used for Event Handler in C-Sharp (code execution hangs in an Event Handler)

Asp.Net Core EF Core Error: Cannot access a dispos

Asp.Net 5 Application is losing state when enters

Asp.Net 5 Application is losing state when enters an Event Handler C-Sharp

NullReferenceException: Object reference not set t

NullReferenceException: Object reference not set to an instance of an object

User Control (ASP.Net)

User Control (ASP.Net)

What is ConfigureAwait(true) in Asp.Net Core 3.1 C

What is ConfigureAwait(true) in Asp.Net Core 3.1 C#

System.InvalidOperationException: Error while vali

System.InvalidOperationException: Error while validating the service descriptor 'ServiceType: YOURSERVICE: Singleton ImplementationType: TheRepositoryConsumingTheInterface : Cannot consume scoped service 'DBContext' from singleton 'YourInterface'

How to update SelectListItem based on Filtered Cat

How to update SelectListItem based on Filtered Category from another DropDown menu in MVC AspNet 6 Razor Syntax

What is Async Await in AspNet 6 (C-Sharp)

What is Async Await in AspNet 6 (C-Sharp)

Event Viewer cannot open the event log or custom v

Event Viewer cannot open the event log or custom view. Verify that Event Log service is running or query is too long.

How to use ContinueWith in an Async Function to Ma

How to use ContinueWith in an Async Function to Make Sure Thread Executes One after the Other

Asp.Net Core 3.1 2020 Conference Notes

Asp.Net Core 3.1 2020 Conference Notes

ERROR! The requested handler 'restart ufw' was not

ERROR! The requested handler 'restart ufw' was not found in either the main handlers list nor in the listening handlers list

HTTP Error 500.19 Internal server error

HTTP Error 500.19 Internal server error

Why Progressive Web Apps PWA Are The Future of Web

Why Progressive Web Apps PWA Are The Future of Web

Where is the Windows Event Viewer Log Folder locat

Where is the Windows Event Viewer Log Folder located in Windows 11 and Windows 10

Software Development Refactoring Wisdom I gained t

Software Development Refactoring Wisdom I gained through Reviewing My Own Code

SVT Robotics - .NET Core Take Home Recruiting Asse

SVT Robotics - .NET Core Take Home Recruiting Assessment

An Exception occurred in the database while saving

An Exception occurred in the database while saving changes for context type 'ContextType' Microsoft.Data.SqlClient.SqlException (0x80131904)

How to Find Event Logs folder on Windows

How to Find Event Logs folder on Windows

Microsoft Data SqlClient SqlException (0x80131904)

Microsoft Data SqlClient SqlException (0x80131904) New transaction is not allowed because there are other threads running in the session

What is domain driven design in Asp.Net 8?

What is domain driven design in Asp.Net 8?

The configured execution strategy 'SlqServerRetryi

The configured execution strategy 'SlqServerRetryingExecutionStrategy' does not support user-initiated transactions. Use the execution strategy returned by DbContext.Database.CreateExecutionStrategy()' to execute

InvalidOperationException, A second operation star

InvalidOperationException, A second operation started on this context before a previous operation completed.

InvalidOperationException: Cannot override the 'hr

Lazy Loading Error Cannot read property 'fn' of un

Lazy Loading Error Cannot read property 'fn' of undefined

[Optimize Websites] Add Async to JavaScript to All

[Optimize Websites] Add Async to JavaScript to Allow the DOM to continual executing

JavaScript onclick() posting twice (Bug)

JavaScript onclick() posting twice (Bug)

Microsoft.EntityFrameworkCore.Database.Transaction

Microsoft.EntityFrameworkCore.Database.Transaction[20205] An error occurred using a transaction.

C-Sharp 11 Tips and Tricks

C-Sharp 11 Tips and Tricks

DotNet Software Development and Performance Tools

DotNet Software Development and Performance Tools

The mapped network drive could not be created beca

The mapped network drive could not be created because the following error has occurred

_context.SaveChanges is not working

_context.SaveChanges is not working

RoutePatternException: The route template separato

RoutePatternException: The route template separator character '/' cannot appear consecutively. It must be separated by either a parameter or a literal value.

Asp.Net Programming Bad Practices

Asp.Net Programming Bad Practices

[SOLVED!! Entity Framework Error Asp.Net Core 3.1]

[SOLVED!! Entity Framework Error Asp.Net Core 3.1] InvalidCastException: Unable to cast object of type 'Microsoft.EntityFrameworkCore.Query.Internal.EntityQueryable`

InvalidOperationException: An error was generated

InvalidOperationException: An error was generated for warning 'Microsoft.EntityFrameworkCore.Query.InvalidIncludePathError': Unable to find navigation 'EntityName' specified in string based include path 'AnotherEntity Name'.

RuntimeBinderException: Cannot implicitly convert

RuntimeBinderException: Cannot implicitly convert type

How to Sign Out a User when Session Expires in Asp

How to Sign Out a User when Session Expires in AspNetCore

Asp.Net Core 3.1 Entity Framwork Database Context

Asp.Net Core 3.1 Entity Framwork Database Context Error: System.ObjectDisposedException: 'Cannot access a disposed object

HTTP Error 500.30 - ASPNET CORE app failed to star