« Blazor ASP.NET Core 7.0 » : différence entre les versions
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= [https://learn.microsoft.com/en-us/aspnet/core/blazor/blazor-server-ef-core?view=aspnetcore-7.0 Entity Framework Core] = | = [https://learn.microsoft.com/en-us/aspnet/core/blazor/blazor-server-ef-core?view=aspnetcore-7.0 Entity Framework Core] = | ||
== [https://learn.microsoft.com/en-us/ef/core/dbcontext-configuration/#using-a-dbcontext-factory-eg-for-blazor Using a DbContext factory] == | == [https://learn.microsoft.com/en-us/ef/core/dbcontext-configuration/#using-a-dbcontext-factory-eg-for-blazor Using a DbContext factory] == | ||
DbContext isn't thread safe and isn't designed for concurrent use.<br> | |||
To handle multi-threads scenarios, use a {{boxx|AddDbContextFactory}} to create a DbContext for each query. | To handle multi-threads scenarios, use a {{boxx|AddDbContextFactory}} to create a DbContext for each query. | ||
Version du 28 mars 2023 à 09:36
Entity Framework Core
Using a DbContext factory
DbContext isn't thread safe and isn't designed for concurrent use.
To handle multi-threads scenarios, use a AddDbContextFactory to create a DbContext for each query.
| Program.cs |
builder.Services.AddDbContextFactory<MyDbContext>(); |
| MyRepository.cs |
private readonly IDbContextFactory<MyDbContext> contextFactory;
public DataSummaryRepository(IDbContextFactory<MyDbContext> contextFactory)
{
this.contextFactory = contextFactory;
}
public async Task<Data> FetchDataAsync()
{
// create a DbContext for this query, then dispose it once the query has been executed
using var context = contextFactory.CreateDbContext();
}
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