Solved Solutions to computer programming Errors

[AspNet 5 Entity Framework 6 Error] InvalidOperati

.NET 7
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[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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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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SqlNullValueException: Data is Null. This method o

ENTITY FRAMEWORK
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SqlNullValueException: Data is Null. This method or property cannot be called on Null values

ENTITY FRAMEWORK
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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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How to Make Visual Studio Run Faster

TECHNOLOGY
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How to Make Visual Studio Run Faster

TECHNOLOGY
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How to Insert two corresponding columns into a tem

How to Insert two corresponding columns into a temp table using SQL in Microsoft SQL Server

OTHER
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SqlExeption: Cannot insert explicit value for identity column in table when IDENTITY_INSERT is set to OFF

SQL
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The name 'Category' does not exist in the current

.NET 5
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The name 'Category' does not exist in the current context

.NET 5
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SqlException: Cannot insert the value NULL into co

ENTITY FRAMEWORK
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SqlException: Cannot insert the value NULL into column 'Id', table 'dbo.TableName'; column does not allow nulls. INSERT fails. The statement has been terminated

ENTITY FRAMEWORK
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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 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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[Solved] System.InvalidOperationException: 'Unable

QUESTIONS
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[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

QUESTIONS
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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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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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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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Entity Framework Core Error: Unable to track an en

ENTITY FRAMEWORK
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Entity Framework Core Error: Unable to track an entity of type "Model Class Object" because primary key property 'id' is null

ENTITY FRAMEWORK
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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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How to get another User Claims or Add User to a Ro

.NET 7
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How to get another User Claims or Add User to a Role in Asp.Net Core Application

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

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

ENTITY FRAMEWORK
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You cannot visit [Website Name] now because the we

QUESTIONS
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You cannot visit [Website Name] now because the website sent scrambled credentials that Google Chrome cannot process. Network errors and attacks are usually temporary, so this page will probably work later.

QUESTIONS
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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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Home Remedies for Bad Toothache

HEALTH
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Home Remedies for Bad Toothache

HEALTH
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What is New in C-Sharp 9 Programming Language

.NET 7
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What is New in C-Sharp 9 Programming Language

.NET 7
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SQL Server Tips and Tricks

SQL
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SQL Server Tips and Tricks

SQL
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An unhandled exception has occurred while executin

.NET 7
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An unhandled exception has occurred while executing the request. System.ArgumentNullException: Value cannot be null. (Parameter 'buffer')

.NET 7
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How to Hide a Div on a Small Screen using Boostrap

TECHNOLOGY
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How to Hide a Div on a Small Screen using Boostrap 5

TECHNOLOGY
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Ionic Error popTo(opts?) Function

ANDROID
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Ionic Error popTo(opts?) Function

ANDROID
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What is New in C-Sharp 9 ( Developing Notes )

C-SHARP
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What is New in C-Sharp 9 ( Developing Notes )

C-SHARP
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[Solved] cannot apply indexing with [] to an expre

TECHNOLOGY
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[Solved] cannot apply indexing with [] to an expression of type QueryString

TECHNOLOGY
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Sql Server Error: Unable to modify table. The co

SQL
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Sql Server Error: Unable to modify table. The conversion of a date data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

SQL
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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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[Solved] Entity Framework Core Asp.Net Core 3.1 Er

SQL
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[Solved] Entity Framework Core Asp.Net Core 3.1 Error: SqlException: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

SQL
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warning CS8632: The annotation for nullable refer

.NET 7
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warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

.NET 7
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Issues with Memory Cache TryGetValue always return

.NET 7
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Issues with Memory Cache TryGetValue always returns false

.NET 7
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Data structure in C-Sharp Software Development Not

ALGORITHMS
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Data structure in C-Sharp Software Development Notes

ALGORITHMS
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How to send JSON data in HTTP Request Body to a do

DATABASES
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How to send JSON data in HTTP Request Body to a dot net core Web API using Postman

DATABASES
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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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How to get current date in angular in HTML inline

RESEARCH
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How to get current date in angular in HTML inline

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

ENTITY FRAMEWORK
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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.

ENTITY FRAMEWORK
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The Compose file './docker-compose.yml' is invali

DOCKER
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The Compose file './docker-compose.yml' is invalid because

DOCKER
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XmlException: The ':' character, hexadecimal value

XML
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XmlException: The ':' character, hexadecimal value 0x3A, cannot be included in a name

XML
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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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How to get a User ID in Asp.Net Core 3.1 (ClaimPri

.NET 7
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How to get a User ID in Asp.Net Core 3.1 (ClaimPrincipal) in a Service Repository

.NET 7
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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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Ionic Cordova App Error(Stack on [Trans-pile Start

ANDROID
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Ionic Cordova App Error(Stack on [Trans-pile Started])

ANDROID
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Check if url contains text in C# (asp.net 6)

.NET 7
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Check if url contains text in C# (asp.net 6)

.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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The instance of entity type 'IdentityUserLogin<str

TECHNOLOGY
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The instance of entity type 'IdentityUserLogin<string>' cannot be tracked because another instance with the same key value for {'LoginProvider', 'ProviderKey'} is already being tracked

TECHNOLOGY
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InvalidOperationException: The property "ModelName.Id" has a temporary value

[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.

InvalidOperationException: The property 'EntityNam

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

SqlNullValueException: Data is Null. This method o

SqlNullValueException: Data is Null. This method or property cannot be called on Null values

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

How to Make Visual Studio Run Faster

How to Make Visual Studio Run Faster

How to Insert two corresponding columns into a tem

How to Insert two corresponding columns into a temp table using SQL in Microsoft SQL Server

equivalent of bit data type in C#

equivalent of bit data type in C#

SqlExeption: Cannot insert explicit value for iden

SqlExeption: Cannot insert explicit value for identity column in table when IDENTITY_INSERT is set to OFF

The name 'Category' does not exist in the current

The name 'Category' does not exist in the current context

SqlException: Cannot insert the value NULL into co

SqlException: Cannot insert the value NULL into column 'Id', table 'dbo.TableName'; column does not allow nulls. INSERT fails. The statement has been terminated

[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 3.1 Entity Framework Core DateTime fi

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

[Solved] System.InvalidOperationException: 'Unable

[Solved] System.InvalidOperationException: 'Unable to track an entity of type 'EntityName' because its primary key property 'Id' is null

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

InvalidOperationException: The required column 'Ca

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

Entity framework "InvalidCastException: Unable to

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

Entity Framework Core Error: Unable to track an en

Entity Framework Core Error: Unable to track an entity of type "Model Class Object" because primary key property 'id' is null

System.InvalidOperationException: The ConnectionSt

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

How to get another User Claims or Add User to a Ro

How to get another User Claims or Add User to a Role in Asp.Net Core Application

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

You cannot visit [Website Name] now because the we

You cannot visit [Website Name] now because the website sent scrambled credentials that Google Chrome cannot process. Network errors and attacks are usually temporary, so this page will probably work later.

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)

Home Remedies for Bad Toothache

Home Remedies for Bad Toothache

What is New in C-Sharp 9 Programming Language

What is New in C-Sharp 9 Programming Language

SQL Server Tips and Tricks

SQL Server Tips and Tricks

An unhandled exception has occurred while executin

An unhandled exception has occurred while executing the request. System.ArgumentNullException: Value cannot be null. (Parameter 'buffer')

How to Hide a Div on a Small Screen using Boostrap

How to Hide a Div on a Small Screen using Boostrap 5

Ionic Error popTo(opts?) Function

Ionic Error popTo(opts?) Function

What is New in C-Sharp 9 ( Developing Notes )

What is New in C-Sharp 9 ( Developing Notes )

[Solved] cannot apply indexing with [] to an expre

[Solved] cannot apply indexing with [] to an expression of type QueryString

Sql Server Error: Unable to modify table. The co

Sql Server Error: Unable to modify table. The conversion of a date data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

Lazy Loading Error Cannot read property 'fn' of un

Lazy Loading Error Cannot read property 'fn' of undefined

[Solved] Entity Framework Core Asp.Net Core 3.1 Er

[Solved] Entity Framework Core Asp.Net Core 3.1 Error: SqlException: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. The statement has been terminated

warning CS8632: The annotation for nullable refer

warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.

Issues with Memory Cache TryGetValue always return

Issues with Memory Cache TryGetValue always returns false

Data structure in C-Sharp Software Development Not

Data structure in C-Sharp Software Development Notes

How to send JSON data in HTTP Request Body to a do

How to send JSON data in HTTP Request Body to a dot net core Web API using Postman

What is domain driven design in Asp.Net 8?

What is domain driven design in Asp.Net 8?

How to get current date in angular in HTML inline

How to get current date in angular in HTML inline

ASP.Net Core 2.2 Not Required Field in Data Model.