Inserting data repeatedly in database table when every am clicking on insert button

ServiceController[] services = ServiceController.GetServices();
{
              dataGridView1.DataSource = services ;
}
 

 
 string conn = "Data Source=HostName;Initial Catalog=MSNETDB;Integrated Security=True;Pooling=False";
            SqlConnection mycon = new SqlConnection(conn);
            mycon.Open();
                foreach (DataGridViewRow row in dataGridView1.Rows)
                {
                    
                    string Displayname = row.Cells[3].Value.ToString();
                    string ServiceName = row.Cells[4].Value.ToString();
                    string Status = row.Cells[5].Value.ToString();
                    string ServiceType = row.Cells[6].Value.ToString();              
                    
    
                    SqlCommand com = new SqlCommand(conn, mycon);
                   
                    com .CommandText = "insert into SystemServiceInfo(DisplayName,ServiceName,Status,ServiceType)values('" + Displayname + "','" + ServiceName + "','" + Status + "','" + ServiceType + "')";
                    
                   com.ExecuteNonQuery();
                    com.Parameters.Clear();
                    com.Dispose();
 

                }
            
                mycon.Close();
                mycon.Dispose();