Table not updating

Question

I have this code that I try to fill a table in a databse.

I push the ok button, I receive no error but nothing is in my table.

can anyone tell me what could be wrong?

Thanks 

 

 

private void button1_Click(object sender, EventArgs e)

{

string conection = @" Data Source = (LocalDB)\MSSQLLocalDB; AttachDbFilename = C:\Edy\Visual Studio\Last planner system\Last planner system\planning data.mdf";

using (SqlConnection con = new SqlConnection(conection))

con.Open();

SqlCommand cmd = new SqlCommand("INSERT INTO (Project name) values (Name, Starting date, End date, Description ");

cmd.Parameters.Add("Name", SqlDbType.NVarChar).Value = txtName.Text;

cmd.Parameters.Add("Starting date ", SqlDbType.Date).Value = txtStartDate.Text;

cmd.Parameters.Add("End date", SqlDbType.Date).Value = TxtEndDate.Text;

cmd.Parameters.Add("Description", SqlDbType.Text).Value = txtDescription.Text;

using (SqlConnection con1 = new SqlConnection(conection))

con1.Close();

MessageBox.Show("Done!!!");