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  • ADO.net--杂七杂八(一)

     private void BtnConnectDataBase_Click(object sender, RoutedEventArgs e)
            {
                string connectionString = "Data Source=.\SQLEXPRESS;Initial Catalog=Easy5DB; User ID=easy5;Password=123456";
                using (SqlConnection sqlConnection = new SqlConnection(connectionString))
                {
                    try
                    {
                        sqlConnection.Open();
                        using (SqlCommand commnad = sqlConnection.CreateCommand())
                        {
                            try
                            {
                                string query = "select genreId, name from inventory.Genre order by genreId";
                                commnad.CommandText = query;
                                //-------------SqlDataReader
                                //SqlDataReader dataReader = commnad.ExecuteReader();
                                //while (dataReader.Read())
                                //{
                                //    Console.WriteLine("{0}-{1}", dataReader["genreId"], dataReader["name"]);
                                //}
                                //--------------SqlDataAdapter
                                SqlDataAdapter dataAdapeter = new SqlDataAdapter(commnad);
                                DataSet dataSet = new DataSet();
                                dataAdapeter.Fill(dataSet);
                                //dataSet.Tables
                                foreach (DataRow row in dataSet.Tables[0].Rows)
                                {
                                    Console.WriteLine("{0}-{1}",row["genreId"],row["name"]);
                                }
                            }
                            catch (Exception commandError)
                            {
                                MessageBox.Show("执行Command失败:
    " + commandError.ToString());
                            }
    
                        }
                    }
                    catch (Exception openError)
                    {
                        MessageBox.Show("打开数据库失败:
    " + openError.ToString());
                    }
                    finally
                    {
                        sqlConnection.Close();
                    }
    
                }
            }
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  • 原文地址:https://www.cnblogs.com/easy5weikai/p/3160553.html
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