MongoDbContext.cs GetDatabaseName Function Not Working Well

Hi,

I had a problem getting the database name in the function you just wrote. I use the connection string structure provided by MongoDB. I've improved your code below. I updated your structure and authSource to bring the database name from there if there is one. If it fits your structure, you can apply this code in the project.

My connectionString structure "mongodb+srv://server.example.com/?connectTimeoutMS=300000&authSource=aDifferentAuthDB"

private string GetDatabaseName(string mongoDbConnectionString) { int dbNameStartIndex = mongoDbConnectionString.IndexOf("authSource=") + "authSource=".Length; if (dbNameStartIndex < "authSource=".Length) { var databaseName = mongoDbConnectionString.Substring(mongoDbConnectionString.LastIndexOf("/", StringComparison.InvariantCultureIgnoreCase) + 1); if (databaseName.Contains("?")) { databaseName = databaseName.Substring(0, databaseName.IndexOf("?", StringComparison.InvariantCultureIgnoreCase)); } return databaseName; } int dbNameEndIndex = mongoDbConnectionString.IndexOf('&', dbNameStartIndex); if (dbNameEndIndex == -1) { dbNameEndIndex = mongoDbConnectionString.Length; } return mongoDbConnectionString.Substring(dbNameStartIndex, dbNameEndIndex - dbNameStartIndex); }

Start in MongoDbContext.cs at GetDatabaseName and compare its current behavior with the MongoDB connection string example in the issue. Check extraction when authSource is present and when the database name follows the slash, including query parameters; done means both forms return the intended database name.