Tugas 4 PBKK - A


Persiapan
  1. Visual Studio dengan Installation Package .NET Desktop Development
  2. Link referensi untuk code awal dari program: Menerapkan MVVM di Windows Presentation Foundation (WPF)
  3. Link referensi untuk melakukan koneksi database: Connector/NET for Entity Framework - Entity Framework 6 Support  
Program Awal

Setelah mengikuti seluruh petunjuk pada referensi pertama, program sudah dapat berjalan, akan tetapi masih belum dapat menyimpan data dikarenakan database belum dapat ter-connect. Kumpulan potongan code yang dibutuhkan untuk pengerjaan adalah sebagai berikut:

App.config

<?xml version="1.0" encoding="utf-8"?>
 <configuration>
  <configSections>
    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
  </configSections>
  <entityFramework>
    <providers>
      <provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6" />
      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
    </providers>
  </entityFramework>
  <connectionStrings>
    <add name="LatihanContext" connectionString="server=localhost; database=latihan; uid=meong; password=root" providerName="MySql.Data.MySqlClient" />
  </connectionStrings>
  <startup>
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
  </startup>
</configuration>
HistoryContext.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity.Migrations.History;
using System.Data.Common;
using System.Data.Entity;
 
namespace WpfApp2
{
    public class MyHistoryContext : HistoryContext
    {
        public MyHistoryContext(DbConnection dbConnectionstring defaultSchema)
            : base(dbConnection, defaultSchema)
        {
        }
 
        protected override void OnModelCreating(System.Data.Entity.DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
            modelBuilder.Entity<HistoryRow>().Property(p => p.MigrationId).HasMaxLength(100).IsRequired();
            modelBuilder.Entity<HistoryRow>().Property(p => p.ContextKey).HasMaxLength(200).IsRequired();
        }
    }
 
    public class ModelConfiguration : DbConfiguration
    {
        public ModelConfiguration()
        {
            SetHistoryContext("MySql.Data.MySqlClient", (cs) => new MyHistoryContext(c, s));
        }
    }
}
ItemPenjualan.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
 
namespace WpfApp2
{
    public class ItemPenjualan
    {
        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
        public long Id { getset; }
 
        [StringLength(50)]
        public string NamaBarang { getset; }
        public ItemPenjualan()
        {
            DiskonPersen = 0;
        }
 
 
        public int Jumlah { getset; }
 
        public decimal Harga { getset; }
 
        public decimal DiskonPersen { getset; }
 
        public decimal Total()
        {
            decimal total = Jumlah * Harga;
            return total - (DiskonPersen / 100 * total);
        }
    }
}
ItemPenjualanViewModel.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;
using System.Windows.Input;
using System.Windows;
 
namespace WpfApp2
{
    class ItemPenjualanViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
 
        private ItemPenjualan model;
        private ICommand simpanCommand;
 
        public ItemPenjualanViewModel(ItemPenjualan itemPenjualan = null)
        {
            this.model = itemPenjualan ?? new ItemPenjualan();
        }
 
        public string NamaBarang
        {
            get { return model.NamaBarang; }
            set
            {
                if (value != model.NamaBarang)
                {
                    model.NamaBarang = value;
                    PropertyChanged(thisnew PropertyChangedEventArgs("NamaBarang"));
                }
            }
        }
 
        public int Jumlah
        {
            get { return model.Jumlah; }
            set
            {
                if (value != model.Jumlah)
                {
                    model.Jumlah = value;
                    PropertyChanged(thisnew PropertyChangedEventArgs("Jumlah"));
                    PropertyChanged(thisnew PropertyChangedEventArgs("Total"));
                }
            }
        }
 
        public decimal Harga
        {
            get { return model.Harga; }
            set
            {
                if (value != model.Harga)
                {
                    model.Harga = value;
                    PropertyChanged(thisnew PropertyChangedEventArgs("Harga"));
                    PropertyChanged(thisnew PropertyChangedEventArgs("Total"));
                }
            }
        }
 
        public decimal DiskonPersen
        {
            get { return model.DiskonPersen; }
            set
            {
                if (value != model.DiskonPersen)
                {
                    model.DiskonPersen = value;
                    PropertyChanged(thisnew PropertyChangedEventArgs("DiskonPersen"));
                    PropertyChanged(thisnew PropertyChangedEventArgs("Total"));
                }
            }
        }
 
        public string Total
        {
            get
            {
                decimaltotal = model.Total();
                if (!total.HasValue)
                {
                    return "-";
                }
                else
                {
                    return total.Value.ToString("C");
                }
            }
        }
 
        public ItemPenjualan Model
        {
            get { return this.model; }
        }
 
        public ICommand SimpanCommand
        {
            get
            {
                if (this.simpanCommand == null)
                {
                    this.simpanCommand = new SimpanCommand(this);
                }
                return this.simpanCommand;
            }
        }
    }
 
    class SimpanCommand : ICommand
    {
 
        private ItemPenjualanViewModel viewModel;
 
        public SimpanCommand(ItemPenjualanViewModel viewModel)
        {
            this.viewModel = viewModel;
        }
 
        public event EventHandler CanExecuteChanged
        {
            add { CommandManager.RequerySuggested += value; }
            remove { CommandManager.RequerySuggested -= value; }
        }
 
        public bool CanExecute(object parameter)
        {
            return viewModel.Model.Total() > 0;
        }
 
        public void Execute(object parameter)
        {
            using (var db = new LatihanContext())
            {
                db.Database.Log = Console.Write;
                db.DaftarItemPenjualan.Add(viewModel.Model);
                db.SaveChanges();
                MessageBox.Show("Data berhasil disimpan ke database");
            }
        }
 
    }
}
Mainwindow.xaml
<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="356" Width="528">
 
    <Window.Resources>
        <Style TargetType="TextBlock">
            <Setter Property="FontSize" Value="20" />
            <Setter Property="FontFamily" Value="Myriad Pro" />
            <Setter Property="FontWeight" Value="SemiBold" />
            <Setter Property="Background">
                <Setter.Value>
                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                        <GradientStop Color="#FF508FC4" Offset="0" />
                        <GradientStop Color="#FF6F94AD" Offset="1" />
                        <GradientStop Color="#FFC7F3FF" Offset="0.302" />
                    </LinearGradientBrush>
                </Setter.Value>
            </Setter>
            <Setter Property="Foreground">
                <Setter.Value>
                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                        <GradientStop Color="#FF5252CE" Offset="0" />
                        <GradientStop Color="#FF0000DB" Offset="0.953" />
                        <GradientStop Color="#FF6363CB" Offset="0.337" />
                    </LinearGradientBrush>
                </Setter.Value>
            </Setter>
        </Style>
 
        <Style TargetType="Label">
            <Setter Property="FontSize" Value="14" />
        </Style>
 
        <Style TargetType="TextBox">
            <Setter Property="Validation.ErrorTemplate">
                <Setter.Value>
                    <ControlTemplate>
                        <StackPanel Orientation="Horizontal">
                            <AdornedElementPlaceholder />
                            <TextBlock Text="Perlu diperbaiki!" Padding="3" Foreground="Red" />
                        </StackPanel>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="Language" Value="in-IN" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate>
                        <Border x:Name="customBorder" Background="{TemplateBinding Background}" CornerRadius="5" BorderThickness="2" BorderBrush="Gray">
                            <ScrollViewer x:Name="PART_ContentHost"/>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsKeyboardFocused" Value="True">
                                <Setter TargetName="customBorder" Property="Effect">
                                    <Setter.Value>
                                        <DropShadowEffect BlurRadius="10" ShadowDepth="0" Color="#578EC9"/>
                                    </Setter.Value>
                                </Setter>
                            </Trigger>
                            <Trigger Property="IsKeyboardFocused" Value="False">
                                <Setter Property="Foreground" Value="Gray" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
 
        <Style TargetType="Button">
            <Setter Property="Background" Value="#DEF2FC" />
            <Setter Property="Foreground" Value="Black" />
            <Setter Property="FontSize" Value="15"/>
            <Setter Property="Effect">
                <Setter.Value>
                    <DropShadowEffect BlurRadius="10" ShadowDepth="0" Color="#578EC9"/>
                </Setter.Value>
            </Setter>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Button}">
                        <Border x:Name="customBorder" Background="{TemplateBinding Background}" CornerRadius="4" BorderThickness="2" BorderBrush="Gray">
                            <ContentPresenter Content="{TemplateBinding Content}" HorizontalAlignment="Center" />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Background" Value="#2394CC" />
                                <Setter Property="Foreground" Value="White" />
                            </Trigger>
                            <Trigger Property="IsPressed" Value="True">
                                <Setter Property="Effect" Value="{x:Null}" />
                            </Trigger>
                            <Trigger Property="IsEnabled" Value="False">
                                <Setter Property="Effect">
                                    <Setter.Value>
                                        <BlurEffect Radius="3"  />
                                    </Setter.Value>
                                </Setter>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>
 
    <Grid>
        <Label Content="Nama Barang:" Height="29" HorizontalAlignment="Left" Margin="0,49,0,0" Name="label2" VerticalAlignment="Top" HorizontalContentAlignment="Right" Width="107" />
        <TextBox Height="23" HorizontalAlignment="Stretch" Margin="112,55,12,0" Name="textBox1" VerticalAlignment="Top" Text="{Binding Path=NamaBarang}" />
        <Label Content="Jumlah:" Height="27" HorizontalAlignment="Left" Margin="1,86,0,0" Name="label3" VerticalAlignment="Top" Width="106" HorizontalContentAlignment="Right" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="113,90,0,0" Name="textBox2" VerticalAlignment="Top" Width="62" Text="{Binding Path=Jumlah, StringFormat={}{0:#.0}}" />
        <Label Content="Harga:" Height="28" HorizontalAlignment="Left" Margin="12,122,0,0" Name="label4" VerticalAlignment="Top" HorizontalContentAlignment="Right" Width="95" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="113,127,0,0" Name="textBox3" VerticalAlignment="Top" Width="124" Text="{Binding Path=Harga, StringFormat={}{0:C}}" />
        <Button Content="Simpan" Height="27" HorizontalAlignment="Left" Margin="207,228,0,0" Name="button1" VerticalAlignment="Top" Width="82" Command="{Binding SimpanCommand}" />
        <Label Content="Diskon (%):" Height="33" HorizontalAlignment="Left" Margin="12,161,0,0" Name="label5" VerticalAlignment="Top" HorizontalContentAlignment="Right" Width="95" />
        <TextBox Height="23" HorizontalAlignment="Left" Margin="113,165,0,0" Name="textBox4" VerticalAlignment="Top" Width="62" Text="{Binding Path=DiskonPersen, StringFormat={}{0:#.#}}" />
        <Label Content="Total:" Height="33" HorizontalAlignment="Left" Margin="12,194,0,0" Name="label6" VerticalAlignment="Top" HorizontalContentAlignment="Right" Width="95" />
        <Label Content="{Binding Path=Total}" Height="28" HorizontalAlignment="Left" Margin="113,194,0,0" Name="label7" VerticalAlignment="Top" Width="402" />
        <TextBlock Height="28" HorizontalAlignment="Stretch" Name="textBlock1" Text="Tambah Item Penjualan" VerticalAlignment="Top" TextAlignment="Center" Margin="0,12,0,0" />
 
        <Grid.Background>
            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="#FFB7CEFF" Offset="0.192" />
                <GradientStop Color="White" Offset="1" />
                <GradientStop Color="#FF1648AD" Offset="0" />
            </LinearGradientBrush>
        </Grid.Background>
 
    </Grid>
</Window>
persistence context.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity.Migrations.History;
using System.Data.Common;
 
using System.Data.Entity;
 
namespace WpfApp2
{
    
    class LatihanContext : DbContext
    {
        public DbSet<ItemPenjualan> DaftarItemPenjualan { getset; }
    }
}

Koneksi ke Database

Persiapan yang harus dilakukan:
  1. Meng-install aplikasi - aplikasi berikut:
    • MySQL Server
    • MySQL for Visual Studio
    • MySQL Connector for .NET

  2. Melakukan instalasi package untuk package - package yang belum terpasang sebelumnya, dapat dilakukan melalui NuGet Package Manager. Package MySql.Data.EntityFramework akan digunakan untuk melakukan koneksi ke database.



Langkah - langkah untuk menghubungkan aplikasi dengan database:
  1. Lakukan perubahan pada App.Config pada line - line berikut:
    • Providers
    • Connection Strings (Menyesuaikan dengan Username, Password, dan Port pada MySQL Server yang telah di-install sebelumnya
    • <?xml version="1.0" encoding="utf-8"?>
      <configuration>
        <configSections>
          <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
          <section name="entityFramework"
            type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
            requirePermission="false"/>
        </configSections>
        <startup>
          <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2"/>
        </startup>
        <connectionStrings>
          <add name="LatihanContext" providerName="MySql.Data.MySqlClient"
              connectionString="server=localhost;port=3306;database=latihan;uid=root;password=root"/>
        </connectionStrings>
        <entityFramework>
          <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"/>
          <providers>
            <provider invariantName="MySql.Data.MySqlClient"
                type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.EntityFramework"/>
            <provider invariantName="System.Data.SqlClient"
                type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer"/>
          </providers>
        </entityFramework>
      </configuration>
  2. Melakukan perubahan pada persistence context.cs menjadi seperti berikut:
  3. using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Data.Entity.Migrations.History;
    using System.Data.Common;
    using MySql.Data.EntityFramework;
    using System.Data.Entity;
     
    namespace WpfApp2
    {
        [DbConfigurationType(typeof(MySqlEFConfiguration))]
        class LatihanContext : DbContext
        {
            public DbSet<ItemPenjualan> DaftarItemPenjualan { getset; }
        }
    }
    
  4. Melalui Package Manager Console, jalankan command berikut secara berurutan:
    • Enable-Migrations
    • Add-Migrations
    • Setelah command Add-Migrations dijalankan, akan diminta input berupa parameter name. Inputkan nama bebas saat name diminta
    • Update-Database
Demo Program:
















    

Comments

Popular posts from this blog

Tugas 6 - Pengenalan Framework CodeIgniter

Tugas 2 - Membuat Program Menggunakan .NET Framework

Tugas 7 - CRUD Pada Framework CodeIgniter