Value cannot be null. Parameter name: connectionString appsettings.json in starter

Question

I am trying to write my connection string in my appsettings.json file and bring it into my startup file but I keep getting a Value cannot be null. Parameter name: connection

Answer 1

this is was the message that appeared me

Value cannot be null. Parameter name: connectionString

I fix it changed in the startup these lines

services.AddDbContext(options =>
options.UseSqlServer(
Configuration["Data:BookStoreContext:ConnectionString"]));

To

services.AddDbContext(options =>
options.UseSqlServer(
Configuration.GetConnectionString("BookStoreContext")));