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mvvm sample (advanced)

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This commit is contained in:
syneffort
2023-06-21 10:59:54 +09:00
parent e60506aaf7
commit 42bc51c9e9
12 changed files with 413 additions and 1 deletions
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9
PacticeSolution/MVVMDatabaseSample/App.xaml Normal file
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<Application x:Class="MVVMDatabaseSample.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MVVMDatabaseSample"
StartupUri="MainWindow.xaml">
<Application.Resources>
</Application.Resources>
</Application>

17
PacticeSolution/MVVMDatabaseSample/App.xaml.cs Normal file
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using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
namespace MVVMDatabaseSample
{
/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
}
}

10
PacticeSolution/MVVMDatabaseSample/AssemblyInfo.cs Normal file
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using System.Windows;
[assembly: ThemeInfo(
ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
//(used if a resource is not found in the page,
// or application resource dictionaries)
ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
//(used if a resource is not found in the page,
// app, or any theme specific resource dictionaries)
)]

18
PacticeSolution/MVVMDatabaseSample/MVVMDatabaseSample.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>WinExe</OutputType>
<TargetFramework>net6.0-windows</TargetFramework>
<Nullable>enable</Nullable>
<UseWPF>true</UseWPF>
</PropertyGroup>
<ItemGroup>
<Folder Include="View\" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="System.Data.SqlClient" Version="4.8.5" />
</ItemGroup>
</Project>

40
PacticeSolution/MVVMDatabaseSample/MainWindow.xaml Normal file
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<Window x:Class="MVVMDatabaseSample.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:MVVMDatabaseSample" xmlns:viewmodel="clr-namespace:MVVMDatabaseSample.ViewModel"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="500">
<Window.DataContext>
<viewmodel:ViewModelMain/>
</Window.DataContext>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="70"/>
</Grid.RowDefinitions>
<DataGrid x:Name="grdMain" Grid.ColumnSpan="3" Margin="5"
AutoGenerateColumns="False"
ItemsSource="{Binding SampleData, Mode=TwoWay, NotifyOnSourceUpdated=True, NotifyOnTargetUpdated=True}">
<DataGrid.Columns>
<DataGridTextColumn MinWidth="10" Width="Auto" Header="Name" Binding="{Binding Name}"/>
<DataGridTextColumn MinWidth="100" Width="Auto" Header="AGE" Binding="{Binding Age}"/>
<DataGridTextColumn MinWidth="100" Width="Auto" Header="GRADE" Binding="{Binding Grade}"/>
<DataGridTextColumn MinWidth="200" Width="*" Header="SCORE" Binding="{Binding Score}"/>
</DataGrid.Columns>
</DataGrid>
<Button Grid.Column="0" Grid.Row="1" Margin="5" Content="Connect" Command="{Binding ConnectCommand}"/>
<Button Grid.Column="1" Grid.Row="1" Margin="5" Content="Search" Command="{Binding SelectCommand}"/>
<Button Grid.Column="2" Grid.Row="1" Margin="5" Content="Update" IsEnabled="False" Command="{Binding Update}"/>
</Grid>
</Window>

35
PacticeSolution/MVVMDatabaseSample/MainWindow.xaml.cs Normal file
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using MVVMDatabaseSample.Util;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace MVVMDatabaseSample
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
InitInstance();
}
private void InitInstance()
{
SqlDBManager.Instance.ConnectionString = "Data Source=peacecloud.synology.me,21433;Initial Catalog=Study;User ID=study;Password=Study1234";
}
}
}

16
PacticeSolution/MVVMDatabaseSample/Model/Student.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MVVMDatabaseSample.Model
{
internal class Student
{
public string Name { get; set; }
public int Age { get; set; }
public string Grade { get; set; }
public int Score { get; set; }
}
}

54
PacticeSolution/MVVMDatabaseSample/Util/SqlDBManager.cs Normal file
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using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace MVVMDatabaseSample.Util
{
internal sealed class SqlDBManager
{
public static SqlDBManager Instance { get; private set; } = new SqlDBManager();
public string ConnectionString { get; set; }
public SqlConnection Connection { get; private set; }
private SqlCommand _sqlCommand;
public bool GetConnection()
{
try
{
_sqlCommand = new SqlCommand();
_sqlCommand.Connection = this.Connection;
this.Connection = new SqlConnection(ConnectionString);
this.Connection.Open();
return true;
}
catch (Exception)
{
return false;
}
}
public DataSet ExecuteQuery(DataSet ds, string query)
{
ds.Reset();
lock (this)
{
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = _sqlCommand;
adapter.SelectCommand.Connection = this.Connection;
adapter.SelectCommand.CommandText = query;
adapter.Fill(ds);
}
return ds;
}
}
}

47
PacticeSolution/MVVMDatabaseSample/ViewModel/DelegateCommand.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Input;
namespace MVVMDatabaseSample.ViewModel
{
internal class DelegateCommand : ICommand
{
private readonly Func<bool> _canExecute;
private readonly Action _execute;
public event EventHandler? CanExecuteChanged;
public DelegateCommand(Action execute, Func<bool> canExecute)
{
_execute = execute;
_canExecute = canExecute;
}
public DelegateCommand(Action execute) : this(execute, null)
{
}
public bool CanExecute(object? parameter)
{
if (_canExecute == null)
return true;
return _canExecute();
}
public void Execute(object? parameter)
{
_execute();
}
public void RaiseCanExecuteChanged()
{
if (this.CanExecuteChanged != null)
this.CanExecuteChanged(this, EventArgs.Empty);
}
}
}

160
PacticeSolution/MVVMDatabaseSample/ViewModel/ViewModelMain.cs Normal file
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using MVVMDatabaseSample.Model;
using MVVMDatabaseSample.Util;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
namespace MVVMDatabaseSample.ViewModel
{
internal class ViewModelMain : INotifyPropertyChanged
{
private Student _student = new Student();
private ObservableCollection<Student> _sampleData;
private ICommand _connectCommand;
private ICommand _selectCommand;
private ICommand _loadedCommand;
public event PropertyChangedEventHandler? PropertyChanged;
public string Name
{
get { return _student.Name; }
set
{
_student.Name = value;
OnPropertyChanged("Name");
}
}
public int Age
{
get { return _student.Age; }
set
{
_student.Age = value;
OnPropertyChanged("Age");
}
}
public string Grage
{
get { return _student.Grade; }
set
{
_student.Grade = value;
OnPropertyChanged("Grade");
}
}
public int Score
{
get { return _student.Score; }
set
{
_student.Score = value;
OnPropertyChanged("Score");
}
}
public ObservableCollection<Student> SampleData
{
get
{
if (_sampleData == null)
_sampleData = new ObservableCollection<Student>();
return _sampleData;
}
set { _sampleData = value; }
}
public ICommand ConnectCommand
{
get
{
if (_connectCommand == null)
_connectCommand = new DelegateCommand(Connect);
return _connectCommand;
}
}
public ICommand SelectCommand
{
get
{
if (_selectCommand == null)
_selectCommand = new DelegateCommand(Select);
return _selectCommand;
}
}
public ICommand LoadedCommand
{
get
{
if (_loadedCommand == null)
_loadedCommand = new DelegateCommand(Load);
return _loadedCommand;
}
}
private void Connect()
{
string message;
if (!SqlDBManager.Instance.GetConnection())
message = "Fail to connect";
else
message = "Success to connect";
MessageBox.Show(message);
}
private void Select()
{
DataSet ds = new DataSet();
string qry = "SELECT * FROM Student";
SqlDBManager.Instance.ExecuteQuery(ds, qry);
if (ds.Tables.Count < 1)
return;
foreach (DataRow row in ds.Tables[0].Rows)
{
Student student = new Student()
{
Name = row["Name"].ToString(),
Age = (int)row["Age"],
Grade = row["Grade"].ToString(),
Score = (int)row["Score"],
};
_sampleData.Add(student);
}
}
private void Load()
{
string message;
if (!SqlDBManager.Instance.GetConnection())
message = "Fail to connect";
else
message = "Success to connect";
MessageBox.Show(message);
}
protected void OnPropertyChanged(string propertyName)
{
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
}

6
PacticeSolution/PacticeSolution.sln
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@@ -15,6 +15,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MVVMSample", "MVVMSample\MV
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ResourceSample", "ResourceSample\ResourceSample.csproj", "{858EC308-9ABD-44C1-92E1-59911F60FEB9}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MVVMDatabaseSample", "MVVMDatabaseSample\MVVMDatabaseSample.csproj", "{B0A8E6DE-C6A2-488E-A148-9E7812F615F2}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -45,6 +47,10 @@ Global
{858EC308-9ABD-44C1-92E1-59911F60FEB9}.Debug|Any CPU.Build.0 = Debug|Any CPU
{858EC308-9ABD-44C1-92E1-59911F60FEB9}.Release|Any CPU.ActiveCfg = Release|Any CPU
{858EC308-9ABD-44C1-92E1-59911F60FEB9}.Release|Any CPU.Build.0 = Release|Any CPU
{B0A8E6DE-C6A2-488E-A148-9E7812F615F2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{B0A8E6DE-C6A2-488E-A148-9E7812F615F2}.Debug|Any CPU.Build.0 = Debug|Any CPU
{B0A8E6DE-C6A2-488E-A148-9E7812F615F2}.Release|Any CPU.ActiveCfg = Release|Any CPU
{B0A8E6DE-C6A2-488E-A148-9E7812F615F2}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE

2
PacticeSolution/ResourceSample/MainWindow.xaml.cs
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@@ -31,7 +31,7 @@ namespace ResourceSample
if (_clickCount % 2 == 0)
this.Resources["CustomEventColor"] = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#3de385"));
else
this.Resources["CustomEventColor"] = Resources["CustomRed"];
this.Resources["CustomEventColor"] = Application.Current.FindResource("CustomRed");
_clickCount++;
}