Table of Contents

BLAZMVVM0007: Lifecycle Method Override

Diagnostic Information

  • Diagnostic ID: BLAZMVVM0007
  • Category: Blazing.Mvvm
  • Severity: Info
  • Title: Lifecycle method should use override

Description

A lifecycle method declared on a ViewModelBase-derived type must override the matching virtual base method. A same-signature method without override only hides the base implementation, so the Blazing.Mvvm lifecycle does not dispatch to it.

The rule recognizes OnInitialized, OnInitializedAsync, OnParametersSet, OnParametersSetAsync, OnAfterRender, OnAfterRenderAsync, and ShouldRender. It reports only when the complete signature matches a virtual base method. An explicit new modifier is treated as intentional hiding and is not reported.

Examples

❌ Incorrect

public class ProductViewModel : ViewModelBase
{
    public Task OnInitializedAsync() // BLAZMVVM0007
    {
        return LoadProductsAsync();
    }
}

✅ Correct

public class ProductViewModel : ViewModelBase
{
    public override Task OnInitializedAsync()
    {
        return LoadProductsAsync();
    }
}

Code Fix

The code fix adds override. If the hiding method was declared virtual, the fix replaces virtual with override.

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