binding validation

PacticeSolution/BindingValidationRuleSample/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="BindingValidationRuleSample.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:BindingValidationRuleSample"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

PacticeSolution/BindingValidationRuleSample/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace BindingValidationRuleSample
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/BindingValidationRuleSample/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+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)
+)]

PacticeSolution/BindingValidationRuleSample/BindingValidationRuleSample.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>

PacticeSolution/BindingValidationRuleSample/MainWindow.xaml

@@ -0,0 +1,64 @@
+<Window x:Class="BindingValidationRuleSample.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:BindingValidationRuleSample"
+        xmlns:model="clr-namespace:BindingValidationRuleSample.Model"
+        xmlns:validation="clr-namespace:BindingValidationRuleSample.Validation"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="200" Width="300">
+    <Window.DataContext>
+        <model:Student/>
+    </Window.DataContext>
+
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto"/>
+            <ColumnDefinition Width="*"/>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <TextBlock Grid.Column="0" Grid.Row="0" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="10,2"
+                   Text="Name: "/>
+        <TextBlock Grid.Column="0" Grid.Row="1" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="10,2"
+                   Text="Age: "/>
+        <TextBlock Grid.Column="0" Grid.Row="2" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="10,2"
+                   Text="Phone Number: "/>
+
+        <TextBox Grid.Column="1" Grid.Row="0" Margin="5"
+                 Text="{Binding Name, Mode=TwoWay}"/>
+        <TextBox x:Name="tbxAge" Grid.Column="1" Grid.Row="1" Margin="5"
+                 ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=(Validation.Errors)[0].ErrorContent}">
+            <TextBox.Text>
+                <Binding Path="Age"
+                         Mode="TwoWay"
+                         UpdateSourceTrigger="PropertyChanged">
+                    <Binding.ValidationRules>
+                        <validation:AgeRangeException/>
+                    </Binding.ValidationRules>
+                </Binding>
+            </TextBox.Text>
+        </TextBox>
+        <TextBox Grid.Column="1" Grid.Row="2" Margin="5" Foreground="Blue"
+                 Text="{Binding PhoneNumber, Mode=TwoWay}"/>
+
+        <Grid Grid.Column="0" Grid.Row="4" Grid.ColumnSpan="2" Height="30">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition/>
+                <ColumnDefinition/>
+                <ColumnDefinition/>
+                <ColumnDefinition/>
+            </Grid.ColumnDefinitions>
+
+            <Button Grid.Column="2" Content="OK" Margin="5 3"
+                    Foreground="{Binding ElementName=tbxAge, Path=Foreground}"/>
+            <Button Grid.Column="3" Content="Cancel" Margin="5 3"/>
+        </Grid>
+    </Grid>
+</Window>

PacticeSolution/BindingValidationRuleSample/MainWindow.xaml.cs

@@ -0,0 +1,28 @@
+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 BindingValidationRuleSample
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+    }
+}

PacticeSolution/BindingValidationRuleSample/Model/Student.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BindingValidationRuleSample.Model
+{
+    public class Student : INotifyPropertyChanged
+    {
+        private string _name;
+        private string _age;
+        private string _phoneNumber;
+
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        public Student(string name, string age, string number)
+        {
+            
+        }
+
+        public Student() : this("Name", "20", "123-456-7890")
+        {
+            
+        }
+
+        public string Name
+        { 
+            get { return _name; } 
+            set
+            {
+                _name = value;
+                OnPropertyChanged(nameof(this.Name));
+            } 
+        }
+
+        public string Age
+        {
+            get { return _age; }
+            set
+            {
+                _age = value;
+                OnPropertyChanged(nameof(this.Age));
+            }
+        }
+
+        public string PhoneNumber
+        {
+            get { return _phoneNumber; }
+            set
+            {
+                _phoneNumber = value;
+                OnPropertyChanged(nameof(this.PhoneNumber));
+            }
+        }
+
+        private void OnPropertyChanged(string propertyName)
+        {
+            if (this.PropertyChanged == null)
+                return;
+
+            this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}

PacticeSolution/BindingValidationRuleSample/Validation/AgeRangeException.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Controls;
+
+namespace BindingValidationRuleSample.Validation
+{
+    public class AgeRangeException : ValidationRule
+    {
+        public int MinAge { get; set; } = 0;
+        public int MaxAge { get; set; } = 150;
+
+        public override ValidationResult Validate(object value, CultureInfo cultureInfo)
+        {
+            int age = 0;
+            if (!int.TryParse(value.ToString(), out age))
+                return new ValidationResult(false, "Wrong value.");
+
+            if (age >= this.MinAge && age <= this.MaxAge)
+                return new ValidationResult(true, null);
+            else
+                return new ValidationResult(false, $"Valid age range is {this.MinAge}~{this.MaxAge}");
+        }
+    }
+}

PacticeSolution/PacticeSolution.sln

@@ -53,6 +53,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TabControlSample", "TabCont
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ProgressBarSample", "ProgressBarSample\ProgressBarSample.csproj", "{EB304FB7-67EA-467E-9BE4-E55187415CAB}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BindingValidationRuleSample", "BindingValidationRuleSample\BindingValidationRuleSample.csproj", "{B328C31A-8C85-4A48-A12F-26E11C37A15C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -159,6 +161,10 @@ Global
 		{EB304FB7-67EA-467E-9BE4-E55187415CAB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EB304FB7-67EA-467E-9BE4-E55187415CAB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{EB304FB7-67EA-467E-9BE4-E55187415CAB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B328C31A-8C85-4A48-A12F-26E11C37A15C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B328C31A-8C85-4A48-A12F-26E11C37A15C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B328C31A-8C85-4A48-A12F-26E11C37A15C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B328C31A-8C85-4A48-A12F-26E11C37A15C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PacticeSolution/TabControlSample/MainWindow.xaml

@@ -7,7 +7,23 @@
         mc:Ignorable="d"
         Title="MainWindow" Height="450" Width="400">
     <Grid Margin="10">
-        <TabControl>
+        <TabControl TabStripPlacement="Left">
+            <TabControl.Resources>
+                <Style TargetType="{x:Type TabItem}">
+                    <Setter Property="HeaderTemplate">
+                        <Setter.Value>
+                            <DataTemplate>
+                                <ContentPresenter Margin="0 5 0 5" Content="{TemplateBinding Content}">
+                                    <ContentPresenter.LayoutTransform>
+                                        <RotateTransform Angle="270"/>
+                                    </ContentPresenter.LayoutTransform>
+                                </ContentPresenter>
+                            </DataTemplate>
+                        </Setter.Value>
+                    </Setter>
+                </Style>
+            </TabControl.Resources>
+            
             <TabItem>
                 <TabItem.Header>
                     <StackPanel Orientation="Horizontal">