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DataBase.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using System.Data.Entity;
namespace Task1
{
class DataBase
{
//SQL Connection string must be changed!
SqlConnection newSqlConnection = new SqlConnection(@"Data Source = MainMachine; Initial Catalog=RigsDB; Integrated Security = True");
public void openConnection()
{
if (newSqlConnection.State == System.Data.ConnectionState.Closed)
{
try
{
newSqlConnection.Open();
}
catch
{
Console.WriteLine("Can't connect do DB");
}
}
}
public void closeConnection()
{
if (newSqlConnection.State == System.Data.ConnectionState.Open)
{
newSqlConnection.Close();
}
}
public SqlConnection getConnection()
{
return newSqlConnection;
}
public List<Rigs> createGetQuery (string query)
{
SqlCommand command = new SqlCommand(query, getConnection());
SqlDataReader reader = null;
List<Rigs> listRigs = new List<Rigs>();
try
{
reader = command.ExecuteReader();
}
catch
{
Console.WriteLine("Something went wrong with DB connection. Please, check your SqlConnection string (Data Source, Initial Catalogue)");
return null;
}
if (reader.HasRows)
{
while (reader.Read())
{
//Adding (ID, Name, lng, lat)
listRigs.Add(new Rigs(reader.GetInt32(0), reader.GetString(1), reader.GetDouble(2),reader.GetDouble(3)));
}
}
return listRigs;
}
public void createSetQuery (int id, double lng, double lat)
{
openConnection();
string query = @"UPDATE Rigs SET Lng=" + lng.ToString().Replace(',', '.') + ", Lat=" + lat.ToString().Replace(',', '.') + " WHERE Id=" + id.ToString();
SqlCommand command = new SqlCommand(query, getConnection());
try
{
command.ExecuteNonQuery();
}
catch
{
Console.WriteLine("Something went wrong with DB connection. Please, check your SqlConnection string (Data Source, Initial Catalogue)");
}
closeConnection();
}
}
}