Programming Tutorials

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

By: Linda Ng in Asp.net Tutorials on 2023-06-01  

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

The error message you're encountering suggests that you're trying to use a generic type argument with a non-generic type List.

To resolve this issue, make sure you're using the correct type and providing the appropriate type arguments. Here's an example of how to use the List<T> generic class:

using System.Collections.Generic; // Make sure to include this namespace

// ...

List myList = new List(); // Replace 'string' with the desired type

Ensure that you have the using System.Collections.Generic; directive at the top of your file to import the necessary namespace for using generic collections.






Add Comment

* Required information
1000

Comments

No comments yet. Be the first!

Most Viewed Articles (in Asp.net )

Passing a model globally to all Views in your Asp.net webapp

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

HttpError is not found in Asp,net core project

Getting values from appsettings.json ASP.NET

Pagination in ASP.net core application

Things to note when changing a function to async in your controller

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Do we need to redeploy the webapp when appsettings.json change?s

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

ActiveX component can't create object: 'CDONTS.NewMail' - ASP

Development Mode in IIS for Asp.net projects

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Latest Articles (in Asp.net)

Things to note when changing a function to async in your controller

AmbiguousMatchException: The request matched multiple endpoints.

Call an Action in a controller when user clicks a button in View

Button that is only clickable when the checkbox is checked

Pass the same model to multiple views within the same controller

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Passing a model globally to all Views in your Asp.net webapp

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Pagination in ASP.net core application

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory

Related Tutorials

Things to note when changing a function to async in your controller

AmbiguousMatchException: The request matched multiple endpoints.

Call an Action in a controller when user clicks a button in View

Button that is only clickable when the checkbox is checked

Pass the same model to multiple views within the same controller

Severity Code Description Project File Line Suppression State Error CS0103 The name 'Encoding' does not exist in the current context

Severity Code Description Project File Line Suppression State Error CS0103 The name 'JsonConvert' does not exist in the current context.

Passing a model globally to all Views in your Asp.net webapp

Severity Code Description Project File Line Suppression State Error CS0246 The type or namespace name 'JToken' could not be found.

Severity Code Description Project File Line Suppression State Error CS0308 The non-generic type 'List' cannot be used with type arguments.

One client credential type required either: ClientSecret, Certificate, ClientAssertion or AppTokenProvider must be defined when creating a Confidential Client. Only specify one

Severity Code Description Project File Line Suppression State Warning Found conflicts between different versions of the same dependent assembly.

Severity Code Description Project File Line Suppression State Error CS1061 'string[]' does not contain a definition for 'Any' and no accessible extension method 'Any' accepting a first argument of type 'string[]' could be found (are you missing a using directive or an assembly reference?)

Pagination in ASP.net core application

Microsoft.Identity vs Microsoft.IdentityModel.Clients.ActiveDirectory