Question

I’m trying to add data to a ms access database, it runs without errors but the database is not modified. Am I wrong or I forgot something?

//using System.Data.OleDb;

private void button2_Click(object sender, EventArgs e)
{
     string conStr = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\Projects\Cinema.accdb;Persist Security Info=False;";

     OleDbConnection con = new OleDbConnection(conStr);  
     con.Open(); 
     OleDbCommand cmd = new OleDbCommand("insert into seats(number)" + "Values(1)", con);
     con.Close();
}

Answer 1

You have to execute your command.

cmd.ExecuteNonQuery();