Execute SQL

 protected void ExecuteNonQuery(string sql)
    {
        SqlConnection sqlConn = new SqlConnection();
        try
        {
            string connString = ConfigurationManager.ConnectionStrings["DbConnection"].ToString();
            sqlConn.ConnectionString = connString;
            sqlConn.Open();
            SqlCommand sqlCommand = new SqlCommand(sql, sqlConn);
            sqlCommand.ExecuteNonQuery();
        }
        catch(Exception ex)
        {
            labelSuccess.Text = ex.Message;
        }
        finally
        {
            if(sqlConn.State == System.Data.ConnectionState.Open)
            {
                sqlConn.Close();
            }
        }

    }