NLite.Data.DbConfiguration.GetDatabaseName C# (CSharp) Method

        string GetDatabaseName()
        {
            var connectionStringBuilder = new DbConnectionStringBuilder { ConnectionString = this.ConnectionString };
            object objDbName;
            string dbName = null;

            if (DbProviderName == DbProviderNames.Oracle || DbProviderName == DbProviderNames.Oracle_ODP)
            {
                if (connectionStringBuilder.TryGetValue("USER ID", out objDbName))
                    dbName = objDbName.ToString();
                else if (connectionStringBuilder.TryGetValue("UID", out objDbName))
                    dbName = objDbName.ToString();
            }
            else
            {
                if (connectionStringBuilder.TryGetValue("Initial Catalog", out objDbName))
                    dbName = objDbName.ToString();
                else if (connectionStringBuilder.TryGetValue("Database", out objDbName))
                    dbName = objDbName.ToString();
                else if (connectionStringBuilder.TryGetValue("AttachDBFileName", out objDbName))
                    dbName = objDbName.ToString();
                else if (connectionStringBuilder.TryGetValue("Data Source", out objDbName))
                    dbName = objDbName.ToString();

                var dataDirectory = AppDomain.CurrentDomain.GetData("DataDirectory") as string;

                if (dbName == null) return null;

                if (dbName.Contains(@"|DataDirectory|\"))
                {
                    if (dataDirectory == null)
                        dataDirectory = CheckDataDirectory(dataDirectory);
                    dbName = dbName.Replace(@"|DataDirectory|\", dataDirectory + @"\");
                }
                else if (dbName.Contains(@"|DataDirectory|"))
                {
                    if (dataDirectory == null)
                        dataDirectory = CheckDataDirectory(dataDirectory);
                    dbName = dbName.Replace(@"|DataDirectory|", dataDirectory + @"\");
                }
            }
            return dbName;
        }