Extract Azure SQL Database using DataTools utility - azure

Question

I would like to write a utility using VS2017 Data-Tools that would extract an Azure Sql database and create the dacpac on local file storage.
I understand I can use the SQL Server Object Explorer and extract from their but I want to write a c# executable that would do the same thing for me so I can automate it and schedule it to happen weekly.
I need to be able to exclude a few tables but other than that its a straight forward extract. Is this possible and is there an example I can use to get started with? Sorry this is all new to me so not sure where to begin.

Answer 1

found a solution that works for me:
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.SqlClient;
using Microsoft.SqlServer.Dac;
private static string excludeSchemas = ConfigurationManager.AppSettings["ExcludeSchemas"];
private static string excludeTables = ConfigurationManager.AppSettings["ExcludeTables"];
private static string TableQuery = "SELECT SCHEMA_NAME(schema_id), name FROM sys.tables where SCHEMA_NAME(schema_id) not in ({0} ) and name not in ({1}) order by schema_id,name";
static void Main(string[] args)
{
Extract();
}
private static void Extract()
{
var sourceConnectionString = ConfigurationManager.AppSettings["SourceDbConnection"];
DacServices svc = new DacServices(sourceConnectionString);
DacExtractOptions dacExtractOptions = new DacExtractOptions
{
ExtractApplicationScopedObjectsOnly = true,
ExtractReferencedServerScopedElements = false,
VerifyExtraction = false,
Storage = DacSchemaModelStorageType.Memory
};
var tables = BuildTables();
var dacPacDest = ConfigurationManager.AppSettings["DacPacDestination"];
var sourceDb = ConfigurationManager.AppSettings["sourceDbName"];
svc.Extract(dacPacDest,sourceDb, "Sample DACPAC", new Version(1, 0, 0), "Sample Extract", tables, dacExtractOptions);
}
private static IEnumerable<Tuple<string, string>> BuildTables()
{
var tbls = new List<Tuple<string, string>>();
var tblConnection = ConfigurationManager.AppSettings["SourceDbConnection"];
using (SqlConnection connection = new SqlConnection(tblConnection))
{
connection.Open();
string query = string.Format(TableQuery, excludeSchemas, excludeTables);
using (SqlCommand command = new SqlCommand(query, connection))
{
using (SqlDataReader reader = command.ExecuteReader())
{
while (reader.Read())
{
tbls.Add(new Tuple<string, string>(reader.GetString(0), reader.GetString(1)));
}
}
}
}
return tbls;
}