C#

private void CreateDatabase(String ConnectionString, String Query)
        {
            if (String.IsNullOrEmpty(ConnectionString) ||
                String.IsNullOrEmpty(Query))
            {
                return;
            }
            else
            {
                using (SqlConnection conn = new SqlConnection(ConnectionString))
                {
                    try
                    {
                        if (conn.State != ConnectionState.Open) 
                            conn.Open();
                        SqlCommand cmd = new SqlCommand(Query, conn);
                        cmd.ExecuteNonQuery();
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show("ERROR: " + ex.Message);
                    }
                    finally
                    {
                        conn.Close();
                    }
                }
            }
        }

String sql = "CREATE DATABASE aaaaa ON PRIMARY"
+"(Name=aaaaa_DB, filename = 'C:\\Users\\csrss\\Documents\\Visual Studio 2008\\Projects\\mssql\\mssql\\bin\\Debug\\aaaaa.mdf', size=3,"
+"maxsize=5, filegrowth=10%)log on"
+"(name=aaaaa_log, filename='C:\\Users\\csrss\\Documents\\Visual Studio 2008\\Projects\\mssql\\mssql\\bin\\Debug\\aaaaa_log.ldf',size=3,"
+"maxsize=20,filegrowth=1)";

public static String[] GetDatabases(String ConnectionString, Boolean extra)
        {
            List<String> l = new List<string>();
            String[] output = null;
            if (String.IsNullOrEmpty(ConnectionString))
            {
                return new String[] { "ERROR: Empty connection string!" };
            }
            else
            {
                DataTable dbs = null;
                using (SqlConnection conn = new SqlConnection(ConnectionString))
                {
                    if (conn.State != ConnectionState.Open) conn.Open();
                    try
                    {
                        dbs = conn.GetSchema(extra ? "tables" : "databases");
                    }
                    catch (Exception ex)
                    {
                        conn.Close();
                        return new String[] { ex.Message };
                    }
                    finally
                    {
                        conn.Close();
                    }
                    foreach (DataRow dr in dbs.Rows)
                    {
                        l.Add(dr[extra ? "table_name" : "database_name"].ToString());
                    }
                }
                output = l.ToArray();
            }
            return output;
        }