Fix sample code for connection strings from Configuration

[the-programmer]

Today i wanted to start with a simple blazor app. However it seems that the syntax for loading the connection string has been changed in .NET 6.

The current way is: https://github.com/dotnet/EntityFramework.Docs/blob/7e13def829830a9f2ffa173f92c7e3eb94debef5/entity-framework/core/miscellaneous/connection-strings.md?plain=1#L36-L40

However this seems to generate a CS0103 The name 'Configuration' does not exist in the current context. The namespace Microsoft.Extensions.Configuration is imported.

In .NET 6 the code seems to be the following instead of the current sample. However this generates the error.

builder.Services.AddDbContext<AppDbContext>(options =>
{
    options.UseSqlServer(Configuration.GetConnectionString("BloggingDatabase"));
});

Steps to reproduce.

• In VS2022 create a new "Blazor server app" or "Blazor webassembly app" (when creating a "Blazor webassembly app" be shure to select the "ASP.NET Core hosted" checkbox)
• Set the framework to .NET 6.0
• Open "Program.cs"
• Try to set the connection string.

Update: If you use the "Individual accounts" template the correct syntax is generated

var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
builder.Services.AddDbContext<ApplicationDbContext>(options =>
    options.UseSqlServer(connectionString));

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Document Details

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• ID: de9db02d-7310-1141-6aeb-539c02326a36
• Version Independent ID: 90062036-aa01-3f73-dac9-b4a092245721
• Content: Connection Strings - EF Core
• Content Source: entity-framework/core/miscellaneous/connection-strings.md
• Product: entity-framework
• Technology: entity-framework-core
• GitHub Login: @bricelam
• Microsoft Alias: avickers