Solved Solutions to computer programming Errors

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

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Microsoft.EntityFrameworkCore.Database.Transaction

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

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InvalidOperation: The connection was not closed. The connections current state is connecting

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[EF Core] How to Enable Sensitive Data Logging and

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

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System.InvalidOperationException: The ConnectionSt

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

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Entity Framework Core Error: To change the IDENTIT

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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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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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InvalidOperationException: The required column 'Ca

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

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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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_context.SaveChanges is not working

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_context.SaveChanges is not working

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Can not connect to SQL server in docker container

DOCKER
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Can not connect to SQL server in docker container from another docker container hosting asp.net core 3.0 application

DOCKER
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Error The instance of entity type ModalType cannot

.NET 7
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Error The instance of entity type ModalType cannot be tracked because another instance with the key value {id: 7656544} is already being tracked.

.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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Connection Timeout Expired. The timeout period el

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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

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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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[Solved] Entity Framework Core (EF 6) Error: Unabl

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[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

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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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SqlException: A connection was successfully establ

SQL
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SqlException: A connection was successfully established with the server, but then an error occurred during the login process.

SQL
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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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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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SqlException: A connection was successfully establ

.NET 7
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SqlException: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.)

.NET 7
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The expression 'b.listOfFileRecords' is invalid in

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The expression 'b.listOfFileRecords' is invalid inside an 'Include' operation, since it does not represent a property access

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EF Core 6 Error: Error Number:262,State:1,Class:14

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EF Core 6 Error: Error Number:262,State:1,Class:14 CREATE TABLE permission denied in database

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Error: ("Connection broken: ConnectionResetError(1

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Error: ("Connection broken: ConnectionResetError(104, 'Connection reset by peer')", ConnectionResetError(104, 'Connection reset by peer'))

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InvalidOperationException: An exception was thrown

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InvalidOperationException: An exception was thrown while attempting to evaluate the LINQ query parameter expression

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Asp.Net 5 Development Notes (DotNet Core 3.1 Study

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

SOFTWARE DEVELOPMENT
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Cassandra Entity Framework Error "TypeLoadExceptio

QUESTIONS
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Cassandra Entity Framework Error "TypeLoadException: Method 'GenerateScript' in type"

QUESTIONS
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InvalidOperationException: The property 'EntityNam

QUESTIONS
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InvalidOperationException: The property 'EntityName' has a temporary value while attempting to change the entity's state

QUESTIONS
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SQL Server Tips and Tricks

SQL
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SQL Server Tips and Tricks

SQL
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How to Use DisplayFor to Display Text from EF Core

.NET 7
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How to Use DisplayFor to Display Text from EF Core Data Annotation in MVC and Components

.NET 7
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[Solved: Unauthorized WOPI host.]: Failed to estab

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[Solved: Unauthorized WOPI host.]: Failed to establish socket connection or socket connection closed unexpectedly.

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Entity framework "InvalidCastException: Unable to

.NET 7
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Entity framework "InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.Decimal."

.NET 7
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How to use Microsoft Signalr C# Client in Asp.Net

.NET 7
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How to use Microsoft Signalr C# Client in Asp.Net Core 31 (Error: WithUrl() not found in Core 3 client)

.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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FireWall UFW Ubuntu Mysql Allow Remote Connection

SQL
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FireWall UFW Ubuntu Mysql Allow Remote Connection

SQL
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What is New in Entity Framework 5 Shipped in Asp.N

.NET 7
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What is New in Entity Framework 5 Shipped in Asp.Net 5

.NET 7
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How to enable HTTP/3 in Asp.Net 8

OTHER
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Mysql Connect to Remote Server

SQL
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Mysql Connect to Remote Server

SQL
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How to Select Top Distinct Values from a LINQ Grou

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How to Select Top Distinct Values from a LINQ Group by Results using Entity Framework Core

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Connection error 401: permission denied - invalid

SERVERS
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Connection error 401: permission denied - invalid PVE ticket

SERVERS
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Ethernet Port Forwarding Problems

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Ethernet Port Forwarding Problems

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Microsoft SQL Server, Error: 258

SQL
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Microsoft SQL Server, Error: 258

SQL
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Asp.Net MVC Development Notes

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Asp.Net MVC Development Notes

.NET 7
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GitHub Extension for Visual Studio not appearing i

GIT
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GitHub Extension for Visual Studio not appearing in Visual Studio 2019

GIT
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SqlException: New transaction is not allowed becau

.NET 7
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SqlException: New transaction is not allowed because there are other threads running in the session

.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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Access SQL Server Management Remotely

SQL
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Access SQL Server Management Remotely

SQL
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What is a Host in Asp.Net 8 Application

RESEARCH
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What is a Host in Asp.Net 8 Application

RESEARCH
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EF Core Connection resiliency

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

Microsoft.EntityFrameworkCore.Database.Transaction

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

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)

Entity Framework Core 6 and 7 Tips and Tricks

Entity Framework Core 6 and 7 Tips and Tricks

InvalidOperation: The connection was not closed. T

InvalidOperation: The connection was not closed. The connections current state is connecting

[EF Core] How to Enable Sensitive Data Logging and

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

System.InvalidOperationException: The ConnectionSt

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

Entity Framework Core Error: To change the IDENTIT

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

Performance Tuning for ASP.NET Web Applications

Performance Tuning for ASP.NET Web Applications

InvalidOperationException: The required column 'Ca

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

How to get the last record of Entity Framework mod

How to get the last record of Entity Framework model data

_context.SaveChanges is not working

_context.SaveChanges is not working

Can not connect to SQL server in docker container

Can not connect to SQL server in docker container from another docker container hosting asp.net core 3.0 application

Error The instance of entity type ModalType cannot

Error The instance of entity type ModalType cannot be tracked because another instance with the key value {id: 7656544} is already being tracked.

Asp.Net Core Error: InvalidOperationException: The

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

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

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

[Solved] Entity Framework Core (EF 6) Error: Unabl

[Solved] Entity Framework Core (EF 6) Error: Unable to track an entity of type 'YourModalName' because primary key property 'id' is null.

How to Solve XUnit Automated Testing Error: Castle

How to Solve XUnit Automated Testing Error: Castle DynamicProxy InvalidProxyConstructorArgumentsException

SqlException: A connection was successfully establ

SqlException: A connection was successfully established with the server, but then an error occurred during the login process.

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.

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".

SqlException: A connection was successfully establ

SqlException: A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The certificate chain was issued by an authority that is not trusted.)

The expression 'b.listOfFileRecords' is invalid in

The expression 'b.listOfFileRecords' is invalid inside an 'Include' operation, since it does not represent a property access

EF Core 6 Error: Error Number:262,State:1,Class:14

EF Core 6 Error: Error Number:262,State:1,Class:14 CREATE TABLE permission denied in database

Error: ("Connection broken: ConnectionResetError(1

Error: ("Connection broken: ConnectionResetError(104, 'Connection reset by peer')", ConnectionResetError(104, 'Connection reset by peer'))

InvalidOperationException: An exception was thrown

InvalidOperationException: An exception was thrown while attempting to evaluate the LINQ query parameter expression

Asp.Net 5 Development Notes (DotNet Core 3.1 Study

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

Cassandra Entity Framework Error "TypeLoadExceptio

Cassandra Entity Framework Error "TypeLoadException: Method 'GenerateScript' in type"

InvalidOperationException: The property 'EntityNam

InvalidOperationException: The property 'EntityName' has a temporary value while attempting to change the entity's state

SQL Server Tips and Tricks

SQL Server Tips and Tricks

How to Use DisplayFor to Display Text from EF Core

How to Use DisplayFor to Display Text from EF Core Data Annotation in MVC and Components

[Solved: Unauthorized WOPI host.]: Failed to estab

[Solved: Unauthorized WOPI host.]: Failed to establish socket connection or socket connection closed unexpectedly.

Entity framework "InvalidCastException: Unable to

Entity framework "InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.Decimal."

How to use Microsoft Signalr C# Client in Asp.Net

How to use Microsoft Signalr C# Client in Asp.Net Core 31 (Error: WithUrl() not found in Core 3 client)

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

FireWall UFW Ubuntu Mysql Allow Remote Connection

FireWall UFW Ubuntu Mysql Allow Remote Connection

What is New in Entity Framework 5 Shipped in Asp.N

What is New in Entity Framework 5 Shipped in Asp.Net 5

How to enable HTTP/3 in Asp.Net 8

How to enable HTTP/3 in Asp.Net 8

Mysql Connect to Remote Server

Mysql Connect to Remote Server