Solved Solutions to computer programming Errors

[Solved] InvalidOperationException: The entity typ

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[Solved] InvalidOperationException: The entity type 'TableNameOrModelName' requires a primary key to be defined. If you intended to use a keyless entity type call 'HasNoKey()'.

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HTTP Error 502.5 - Process Failure: The current .N

NETWORK
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HTTP Error 502.5 - Process Failure: The current .Net SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.2 or lower. Visual Studio 2019 unable to locate .Net Core SDK

NETWORK
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Upgrading to .Net Core 3.1 Error Visual Studio 201

.NET 7
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Upgrading to .Net Core 3.1 Error Visual Studio 2019: dotnet core 3.1 rzc generate exited with code 2147450730

.NET 7
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Docker on Raspberry Pi Error .Net Core 3.1 Error: standard_init_linux.go:211: exec user process caused "exec format error"

DOCKER
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The framework 'Microsoft.AspNetCore.App' version'3

DOCKER
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The framework 'Microsoft.AspNetCore.App' version'3.1.0' was not found

DOCKER
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Solved: docker-compose build asp.net core 3.0 erro

DOCKER
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Solved: docker-compose build asp.net core 3.0 error rzc discover exited with code 150

DOCKER
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Dotnet 8 publishing Self-Contained Application not

Dotnet 8 publishing Self-Contained Application not Working

OTHER
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PJSIP Commands

OTHER
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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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Performance Tuning for ASP.NET Web Applications

.NET 7
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Performance Tuning for ASP.NET Web Applications

.NET 7
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Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exis

.NET 7
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Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exist in the Current Context

.NET 7
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Run Machine Learning or Neural Networks applicatio

MACHINE-LEARNING
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Run Machine Learning or Neural Networks applications in CPU or GPU

MACHINE-LEARNING
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System.ObjectDisposedException: Cannot access a di

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

OTHER
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HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Proce

.NET 7
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HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Process Start Failure

.NET 7
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Debugging ASP.NET Core Applications: Accessing Kes

.NET 7
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Debugging ASP.NET Core Applications: Accessing Kestrel from Remote Computers

.NET 7
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How to Count the Number of records in the Database

.NET 7
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How to Count the Number of records in the Database Table using Asp.Net Core Entity Framework Core

.NET 7
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Asp.Net Core 3.1 Entity Framework Core DateTime fi

.NET 7
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Asp.Net Core 3.1 Entity Framework Core DateTime field getting updated to 1/1/0001

.NET 7
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VBA Microsoft Application Libraries

C-SHARP
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VBA Microsoft Application Libraries

C-SHARP
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How to Scaffold or Generate a Custom Identity Logi

.NET 7
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How to Scaffold or Generate a Custom Identity Login UI in Asp.Net Core 3.1

.NET 7
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[HTTP Error 500.30]: Failed to load coreclr.Except

SERVERS
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[HTTP Error 500.30]: Failed to load coreclr.Exception message CLR worker thread exited prematurely

SERVERS
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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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Migrate Existing Asp.Net Web Site to .Net Core

.NET 7
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Migrate Existing Asp.Net Web Site to .Net Core

.NET 7
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how to use speech in asp.net core

.NET 7
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how to use speech in asp.net core

.NET 7
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[Solved] Asp.Net Core 3.1 config.GetSection return

.NET 7
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[Solved] Asp.Net Core 3.1 config.GetSection returns null. AppSettings.json null values.

.NET 7
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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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DotNet Software Development and Performance Tools

.NET 7
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DotNet Software Development and Performance Tools

.NET 7
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[EF Core] How to Enable Sensitive Data Logging and

ENTITY FRAMEWORK
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[EF Core] How to Enable Sensitive Data Logging and Detailed Errors

ENTITY FRAMEWORK
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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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Asp.Net Core GRPC Client Error: the type name "Gre

.NET 7
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Asp.Net Core GRPC Client Error: the type name "GreeterClient" does not exist in the type Greeter

.NET 7
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Entity Framework Core 6 and 7 Tips and Tricks

ENTITY FRAMEWORK
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Entity Framework Core 6 and 7 Tips and Tricks

ENTITY FRAMEWORK
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Could not copy the file to the destination file be

.NET 7
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Could not copy the file to the destination file because the destination is a folder instead of a file. To copy the source file into a folder, consider using the DestinationFolder parameter instead of DestinationFiles

.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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What is New in Asp Net 7 and EF Core 7 (Best Featu

RESEARCH
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What is New in Asp Net 7 and EF Core 7 (Best Features)

RESEARCH
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Asp.Net Core 3.1 Dependency Injection Error Unable

.NET 7
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Asp.Net Core 3.1 Dependency Injection Error Unable to resolve service for type 'Microsoft.AspNetCore.Http.HttpContext

.NET 7
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Connection Timeout Expired. The timeout period el

HOME
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Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake

HOME
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InvalidOperationException: The required column 'Ca

ENTITY FRAMEWORK
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InvalidOperationException: The required column 'Categoryid' was not present in the results of a 'FromSql' operation

ENTITY FRAMEWORK
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could not load System.ComponentModel.AsyncComplete

.NET 7
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could not load System.ComponentModel.AsyncCompleteEventArgs

.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 2.2 Not Required Field in Data Model.

.NET 7
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ASP.Net Core 2.2 Not Required Field in Data Model. DataAnnotations NotMapped or Optional in DotNet Core 2.2

.NET 7
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[Resolved] Dot Net Core Error "Project file is inc

.NET 7
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[Resolved] Dot Net Core Error "Project file is incomplete. Expected imports are missing"

.NET 7
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Asp.Net Core Error: InvalidOperationException: The

.NET 7
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Asp.Net Core Error: InvalidOperationException: The database generated a null value for non-nullable property 'PropertyName' of entity type 'EntityName'. Ensure value generation configuration in the database matches the configuration in the model

.NET 7
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Asp.Net Core Blazor Web Assembly Developing Notes

.NET 7
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Asp.Net Core Blazor Web Assembly Developing Notes

.NET 7
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Understanding ASP.Net Core 2.2 Database Context C

.NET 7
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Understanding ASP.Net Core 2.2 Database Context Class

.NET 7
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Entity Framework Core Error: To change the IDENTIT

ENTITY FRAMEWORK
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Entity Framework Core Error: To change the IDENTITY property of a column, the column needs to be dropped and recreated

ENTITY FRAMEWORK
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How to get localized string from ASP.NET Core Cont

.NET 7
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How to get localized string from ASP.NET Core Controller Work Around

.NET 7
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How to get the last record of Entity Framework mod

.NET 7
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How to get the last record of Entity Framework model data

.NET 7
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System.InvalidOperationException: The ConnectionSt

ENTITY FRAMEWORK
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System.InvalidOperationException: The ConnectionString property has not been initialized [EF Core 7, Asp.Net 7]

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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Asp.Net Core 3.1 Error The 'inject' directive exp

.NET 7
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Asp.Net Core 3.1 Error The 'inject' directive expects an identifier

.NET 7
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EntityFramework Core

[Solved] InvalidOperationException: The entity typ

[Solved] InvalidOperationException: The entity type 'TableNameOrModelName' requires a primary key to be defined. If you intended to use a keyless entity type call 'HasNoKey()'.

HTTP Error 502.5 - Process Failure: The current .N

HTTP Error 502.5 - Process Failure: The current .Net SDK does not support targeting .NET Core 3.0. Either target .NET Core 2.2 or lower. Visual Studio 2019 unable to locate .Net Core SDK

Upgrading to .Net Core 3.1 Error Visual Studio 201

Upgrading to .Net Core 3.1 Error Visual Studio 2019: dotnet core 3.1 rzc generate exited with code 2147450730

HTTP Error 500.19 Internal server error

HTTP Error 500.19 Internal server error

Docker on Raspberry Pi Error .Net Core 3.1 Error:

Docker on Raspberry Pi Error .Net Core 3.1 Error: standard_init_linux.go:211: exec user process caused "exec format error"

The framework 'Microsoft.AspNetCore.App' version'3

The framework 'Microsoft.AspNetCore.App' version'3.1.0' was not found

Solved: docker-compose build asp.net core 3.0 erro

Solved: docker-compose build asp.net core 3.0 error rzc discover exited with code 150

Dotnet 8 publishing Self-Contained Application not

Dotnet 8 publishing Self-Contained Application not Working

PJSIP Commands

PJSIP Commands

How to Solve XUnit Automated Testing Error: Castle

How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

Performance Tuning for ASP.NET Web Applications

Performance Tuning for ASP.NET Web Applications

Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exis

Asp.Net Core 3.1 MVC 5 Error ViewBag does not Exist in the Current Context

Run Machine Learning or Neural Networks applicatio

Run Machine Learning or Neural Networks applications in CPU or GPU

System.ObjectDisposedException: Cannot access a di

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

HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Proce

HTTP Dot Net Core 2.2 Error 500.30 - ANCM In-Process Start Failure

Debugging ASP.NET Core Applications: Accessing Kes

Debugging ASP.NET Core Applications: Accessing Kestrel from Remote Computers

How to Count the Number of records in the Database

How to Count the Number of records in the Database Table using Asp.Net Core Entity Framework Core

Asp.Net Core 3.1 Entity Framework Core DateTime fi

Asp.Net Core 3.1 Entity Framework Core DateTime field getting updated to 1/1/0001

VBA Microsoft Application Libraries

VBA Microsoft Application Libraries

How to Scaffold or Generate a Custom Identity Logi

How to Scaffold or Generate a Custom Identity Login UI in Asp.Net Core 3.1

[HTTP Error 500.30]: Failed to load coreclr.Except

[HTTP Error 500.30]: Failed to load coreclr.Exception message CLR worker thread exited prematurely

How to choose a Framework when making Web app

How to choose a Framework when making Web app

Migrate Existing Asp.Net Web Site to .Net Core

Migrate Existing Asp.Net Web Site to .Net Core

how to use speech in asp.net core

how to use speech in asp.net core

[Solved] Asp.Net Core 3.1 config.GetSection return

[Solved] Asp.Net Core 3.1 config.GetSection returns null. AppSettings.json null values.

How to Integrate Google Search Console API in Asp.

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

DotNet Software Development and Performance Tools

DotNet Software Development and Performance Tools

[EF Core] How to Enable Sensitive Data Logging and

[EF Core] How to Enable Sensitive Data Logging and Detailed Errors

Asp.Net Core 3.1 2020 Conference Notes

Asp.Net Core 3.1 2020 Conference Notes

Asp.Net Core GRPC Client Error: the type name "Gre

Asp.Net Core GRPC Client Error: the type name "GreeterClient" does not exist in the type Greeter

Entity Framework Core 6 and 7 Tips and Tricks

Entity Framework Core 6 and 7 Tips and Tricks

Could not copy the file to the destination file be

Could not copy the file to the destination file because the destination is a folder instead of a file. To copy the source file into a folder, consider using the DestinationFolder parameter instead of DestinationFiles

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".

What is New in Asp Net 7 and EF Core 7 (Best Featu

What is New in Asp Net 7 and EF Core 7 (Best Features)

Asp.Net Core 3.1 Dependency Injection Error Unable

Asp.Net Core 3.1 Dependency Injection Error Unable to resolve service for type 'Microsoft.AspNetCore.Http.HttpContext

Connection Timeout Expired. The timeout period el

Connection Timeout Expired. The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement. This could be because the pre-login handshake

InvalidOperationException: The required column 'Ca

InvalidOperationException: The required column 'Categoryid' was not present in the results of a 'FromSql' operation

could not load System.ComponentModel.AsyncComplete

could not load System.ComponentModel.AsyncCompleteEventArgs

[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 2.2 Not Required Field in Data Model.