Build web apps with Blazor Tutorial

Wilkerson, Christian 0 Reputation points
2024-07-03T21:26:33.11+00:00

First I may not have had to ask this question if there was a sufficient search feature other than the limited Tags and if a question has an answer checkbox.

Exercise - Reuse components by creating a template

Adding: 

[Parameter, EditorRequired] 

public required List
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  1. hossein jalilian 4,695 Reputation points
    2024-07-03T21:42:09.2766667+00:00

    Thanks for posting your question in the Microsoft Q&A forum.

    The error you're encountering is because the required keyword is a feature introduced in C# 11

    • The ideal solution is to update your project to .NET 7 or 8, which fully support the required keyword. However, if you're following a tutorial specifically for .NET 6, this might not be the best option.
    • If you're using .NET 6, you can modify the code to work without the required keyword: 
        [Parameter, EditorRequired]
  public List<TItem> Items { get; set; }
  
  //in the constructor
  public PaginationComponent()
  {
      Items = new List<TItem>();
  }
    • Another approach is to use a nullable type: 
        [Parameter, EditorRequired]
  public List<TItem>? Items { get; set; }
  
  //check 
  if (Items != null)
  {
  // Use Items
  }
    • If you really need to use the required keyword in .NET 6, you can enable C# 11 features by adding this to your .csproj file: xml <PropertyGroup> <LangVersion>11</LangVersion> </PropertyGroup>

    Please don't forget to close up the thread here by upvoting and accept it as an answer if it is helpful

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