Solved Solutions to computer programming Errors

[AspNet 5 Entity Framework 6 Error] InvalidOperationException: The property "ModelName.Id" has a temporary value while attempting to change the entity's state to "Modified". Either set a permanent value explicitly, or ensure that the database is configured to generate values for this property.

.NET 7
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How to Add Cookies to the Http Response in AspNet

.NET 7
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How to Add Cookies to the Http Response in AspNet 6 MVC

.NET 7
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How to Bind a CheckBox data to a Model Integer Pro

DATABASES
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How to Bind a CheckBox data to a Model Integer Property in DotNet Core 2.2

DATABASES
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NullReferenceException: Object reference not set t

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

TECHNOLOGY
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MailKit not Sending Emails in Production Enviromen

.NET 7
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MailKit not Sending Emails in Production Enviroment with Dot Net Core 2.2

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

ENTITY FRAMEWORK
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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.

ENTITY FRAMEWORK
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Error Scaffolding Controllers: There was an error

SQL
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Error Scaffolding Controllers: There was an error running the selected code generator: Could not load file or assembly Microsoft.EntityFrameworkCore, version = 2.2

SQL
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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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InvalidOperationException: The 'Microsoft.AspNetCo

QUESTIONS
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InvalidOperationException: The 'Microsoft.AspNetCore.Mvc.ViewFeatures.Infrastructure.DefaultTempDataSerializer' cannot serialize an object of type 'System.Collections.Generic.List`1

QUESTIONS
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How to Program Apex 7000 Cash Acceptor in Asp.Net

.NET 7
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How to Program Apex 7000 Cash Acceptor in Asp.Net Core 3.1

.NET 7
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Asp.Net 5 Development Notes (DotNet Core 3.1 Study

SOFTWARE DEVELOPMENT
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Asp.Net 5 Development Notes (DotNet Core 3.1 Study Notes)

SOFTWARE DEVELOPMENT
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How to Integrate Google Search Console API in Asp.

How to Integrate Google Search Console API in Asp.Net Core using C#

OTHER
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How to enable HTTP/3 in Asp.Net 8

OTHER
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Dot Net Core 3.1 Link Tag Helpers not Clickable

.NET 7
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Dot Net Core 3.1 Link Tag Helpers not Clickable

.NET 7
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Razor MVC Error : An Expression Tree may not conta

.NET 7
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Razor MVC Error : An Expression Tree may not contain a dynamic operation

.NET 7
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Software Development Good Practices

.NET 7
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Software Development Good Practices

.NET 7
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How to Format a String to a Two Decimal Places in

.NET 7
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How to Format a String to a Two Decimal Places in ASP.NET Core 3.1 MVC View ()

.NET 7
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ObjectDisposedException: Cannot access a disposed

.NET 7
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ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application

.NET 7
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[Solved]: Asp.Net Core Error 'byte[]' does not co

.NET 7
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[Solved]: Asp.Net Core Error 'byte[]' does not contain a definition for 'CopyToAsync' and no accessible extension method 'CopyToAsync' accepting a first argument of type 'byte[]' could be found (are you missing a using directive or an assembly reference?)

.NET 7
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Asp.Net Core MVC Razor View Form not posting data

.NET 7
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Asp.Net Core MVC Razor View Form not posting data to the Server-Side

.NET 7
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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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Ionic Error popTo(opts?) Function

ANDROID
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Ionic Error popTo(opts?) Function

ANDROID
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How to Reinstall Kubernetes on Ubuntu Server

LINUX
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How to Reinstall Kubernetes on Ubuntu Server

LINUX
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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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Should I use Configurer Await False in AspNet 6

.NET 7
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Should I use Configurer Await False in AspNet 6

.NET 7
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[popTo() Error] Ionic Cordova Error [popTo()]

ANDROID
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[popTo() Error] Ionic Cordova Error [popTo()]

ANDROID
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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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SignalR Error in Dot Net Core 3.1 (.Net Core 3.1)

.NET 7
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SignalR Error in Dot Net Core 3.1 (.Net Core 3.1) : "Failed to invoke 'SendMessage' due to an error on the server".

.NET 7
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Microsoft Data SqlClient SqlException (0x80131904)

ENTITY FRAMEWORK
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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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How to Solve XUnit Automated Testing Error: Castle

MVC
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How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

MVC
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How to Setup the Development Environment using Vis

COMPUTER PROGRAMMING
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How to Setup the Development Environment using Visual Studio

COMPUTER PROGRAMMING
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Front-End Development Tips and Tricks

FRONT-END
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Front-End Development Tips and Tricks

FRONT-END
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InvalidOperationException: Incorrect Content-Type

MVC
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InvalidOperationException: Incorrect Content-Type

MVC
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Web API 415: Unsupported Media Type

TUTORIALS
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Web API 415: Unsupported Media Type

TUTORIALS
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Software Best Practices Learned by Experience

SYSTEM DESIGN
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Software Best Practices Learned by Experience

SYSTEM DESIGN
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How to choose a Framework when making Web app

COMPUTER PROGRAMMING
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How to choose a Framework when making Web app

COMPUTER PROGRAMMING
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Controller

ASP.Net Core 2.2 Razor View Routing for Partial Vi

ASP.Net Core 2.2 Razor View Routing for Partial View not working

How to get localized string from ASP.NET Core Cont

How to get localized string from ASP.NET Core Controller Work Around

Mvc authorization attribute not working AspNet 6

Mvc authorization attribute not working AspNet 6

Asp.Net Core 3.1 Not Returning NoContent() or BadR

Asp.Net Core 3.1 Not Returning NoContent() or BadRequest() in the Controller

RuntimeBinderException: Cannot implicitly convert

RuntimeBinderException: Cannot implicitly convert type

What is the best Asp.Net Core Application Design,

What is the best Asp.Net Core Application Design, give diagrams if possible.

CS0103 C# The name 'Json' does not exist in the cu

CS0103 C# The name 'Json' does not exist in the current context

Asp.Net MVC Development Notes

Asp.Net MVC Development Notes

[AspNet 5 Entity Framework 6 Error] InvalidOperati

[AspNet 5 Entity Framework 6 Error] InvalidOperationException: The property "ModelName.Id" has a temporary value while attempting to change the entity's state to "Modified". Either set a permanent value explicitly, or ensure that the database is configured to generate values for this property.

How to Add Cookies to the Http Response in AspNet

How to Add Cookies to the Http Response in AspNet 6 MVC

How to Bind a CheckBox data to a Model Integer Pro

How to Bind a CheckBox data to a Model Integer Property in DotNet Core 2.2

NullReferenceException: Object reference not set t

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

MailKit not Sending Emails in Production Enviromen

MailKit not Sending Emails in Production Enviroment with Dot Net Core 2.2

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

Error Scaffolding Controllers: There was an error

Error Scaffolding Controllers: There was an error running the selected code generator: Could not load file or assembly Microsoft.EntityFrameworkCore, version = 2.2

InvalidOperationException: Cannot override the 'hr

InvalidOperationException: The 'Microsoft.AspNetCo

InvalidOperationException: The 'Microsoft.AspNetCore.Mvc.ViewFeatures.Infrastructure.DefaultTempDataSerializer' cannot serialize an object of type 'System.Collections.Generic.List`1

How to Program Apex 7000 Cash Acceptor in Asp.Net

How to Program Apex 7000 Cash Acceptor in Asp.Net Core 3.1

Asp.Net 5 Development Notes (DotNet Core 3.1 Study

Asp.Net 5 Development Notes (DotNet Core 3.1 Study Notes)

How to Integrate Google Search Console API in Asp.

How to Integrate Google Search Console API in Asp.Net Core using C#

How to enable HTTP/3 in Asp.Net 8

How to enable HTTP/3 in Asp.Net 8

Dot Net Core 3.1 Link Tag Helpers not Clickable

Dot Net Core 3.1 Link Tag Helpers not Clickable

Razor MVC Error : An Expression Tree may not conta

Razor MVC Error : An Expression Tree may not contain a dynamic operation

Software Development Good Practices

Software Development Good Practices

How to Format a String to a Two Decimal Places in

How to Format a String to a Two Decimal Places in ASP.NET Core 3.1 MVC View ()

ObjectDisposedException: Cannot access a disposed

ObjectDisposedException: Cannot access a disposed context instance. A common cause of this error is disposing a context instance that was resolved from dependency injection and then later trying to use the same context instance elsewhere in your application

[Solved]: Asp.Net Core Error 'byte[]' does not co

[Solved]: Asp.Net Core Error 'byte[]' does not contain a definition for 'CopyToAsync' and no accessible extension method 'CopyToAsync' accepting a first argument of type 'byte[]' could be found (are you missing a using directive or an assembly reference?)

Asp.Net Core MVC Razor View Form not posting data

Asp.Net Core MVC Razor View Form not posting data to the Server-Side

SVT Robotics - .NET Core Take Home Recruiting Asse

SVT Robotics - .NET Core Take Home Recruiting Assessment

Ionic Error popTo(opts?) Function

Ionic Error popTo(opts?) Function

How to Reinstall Kubernetes on Ubuntu Server

How to Reinstall Kubernetes on Ubuntu Server

InvalidOperationException: There is no ViewData it

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

Should I use Configurer Await False in AspNet 6

Should I use Configurer Await False in AspNet 6

[popTo() Error] Ionic Cordova Error [popTo()]

[popTo() Error] Ionic Cordova Error [popTo()]

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)

SignalR Error in Dot Net Core 3.1 (.Net Core 3.1)

SignalR Error in Dot Net Core 3.1 (.Net Core 3.1) : "Failed to invoke 'SendMessage' due to an error on the server".

Microsoft Data SqlClient SqlException (0x80131904)

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

How to Solve XUnit Automated Testing Error: Castle

How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

How to Setup the Development Environment using Vis

How to Setup the Development Environment using Visual Studio

Front-End Development Tips and Tricks

Front-End Development Tips and Tricks

InvalidOperationException: Incorrect Content-Type