The named named connection was not found in the configuration, not is intended for use with the EntityClient provider, or is not valid. Description: An unhandled exception occurred during the execution of the current Web request. Examine the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ArgumentException: The named connection has not been found in the configuration, it is not intended for use with the EntityClient provider or is not valid.
public ConnectionString() : base("name=ConnectionString", "ConnectionString")
{ this.ContextOptions.LazyLoadingEnabled = true;
This site is configured in IIS and runs normally on localhost.
But when you run the application through Visual Studio, this error occurs.
Note: When I stop the application in Visual Studio the site normally opens