/// <summary>
/// Loads (or reloads) the data for this provider.
/// </summary>
public override void Load()
{
var builder = new DbContextOptionsBuilder <EntityConfigurationContext>();
_optionsAction(builder);
//创建一个内存数据
using var dbContext = new EntityConfigurationContext(builder.Options);
dbContext.Database.EnsureCreated();
//ConfigurationProvider的数据源
this.Data = dbContext.Settings.Any()
? dbContext.Settings.ToDictionary(c => c.Id, c => c.Value)
: CreateAndSaveDefaultValues(dbContext);
}
static IDictionary <string, string> CreateAndSaveDefaultValues(
EntityConfigurationContext context)
{
var settings = new Dictionary <string, string>(
StringComparer.OrdinalIgnoreCase) //不缺乏大小写
{
["EndpointId"] = "b3da3c4c-9c4e-4411-bc4d-609e2dcc5c67",
["DisplayLabel"] = "Widgets Incorporated, LLC.",
["WidgetRoute"] = "api/widgets"
};
context.Settings.AddRange(
settings.Select(kvp => new Settings(kvp.Key, kvp.Value))
.ToArray());
context.SaveChanges();
return(settings);
}