Keyword not supported: “data source” (Passing Connection String Of Type EF to EF constructor)
Assuming you have a connection string that points to an Entity Framework object. And in your connection class, you pass the connection string to the Entity Framework constructor below: customerEntity = new Database1Entities(_connectionString); You encountered an error Keyword not supported: "data source". The solution is presented here: Keyword not supported data source initializing entity framework context It suggests to replace the " word with single quote (') character. So, in this case, I used Regex to perform replace operation. return Regex.Replace(ConfigurationManager.ConnectionStrings[key].ToString(), @""" , "'" , RegexOptions.IgnoreCase);