WPF数据模板的数据触发器的使用

<Window x:Class="CollectionBinding.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:data="clr-namespace:ClassLibrary;assembly=ClassLibrary"
xmlns:local="clr-namespace:CollectionBinding"
Title="MainWindow" Height="449.904" Width="358.716">
<Window.Resources>
<local:ImageConverter x:Key="ImageConverter"></local:ImageConverter>
<DataTemplate DataType="{x:Type data:Product}">
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=CategoryID}" Value="19">
<Setter Property="ListBoxItem.Foreground" Value="Red"></Setter>
</DataTrigger>
</DataTemplate.Triggers>
<Border Margin="3" BorderThickness="1" BorderBrush="SteelBlue" CornerRadius="4">
<Grid Margin="3">
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Margin="3" FontWeight="Bold" Text="{Binding Path=ModelNumber}"></TextBlock>
<TextBlock Grid.Row="1" Margin="3" FontWeight="Bold" Text="{Binding Path=ModelName}"></TextBlock>
<Image Grid.Row="2" Margin="3" Height="100" Width="100" Source="{Binding Path=ProductImage,Converter={StaticResource ImageConverter}}"></Image>
</Grid>
</Border>
</DataTemplate>
</Window.Resources>

<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<ListBox Margin="3" Grid.Row="0" Name="lstProducts" Height="120"
ScrollViewer.VerticalScrollBarVisibility="Visible">


</ListBox>
<StackPanel Margin="3" Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Right">
<Button Margin="3" MinWidth="100" Name="btnGetProducts" Click="btnGetProducts_Click_1">GetProducts</Button>
</StackPanel>
<Grid Margin="3" Name="grid" Grid.Row="2" DataContext="{Binding ElementName=lstProducts,Path=SelectedItem}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Margin="3" Grid.Row="0" Grid.Column="0">CategoryID:</TextBlock>
<TextBox Name="txtCategoryID" Margin="3" Grid.Row="0" Grid.Column="1" Text="{Binding Path=CategoryID}"></TextBox>

<TextBlock Margin="3" Grid.Row="1" Grid.Column="0">ModelNumber:</TextBlock>
<TextBox Name="txtModelNumber" Margin="3" Grid.Row="1" Grid.Column="1" Text="{Binding Path=ModelNumber}"></TextBox>

<TextBlock Margin="3" Grid.Row="2" Grid.Column="0">ModelName:</TextBlock>
<TextBox Name="txtModelName" Margin="3" Grid.Row="2" Grid.Column="1" Text="{Binding Path=ModelName}"></TextBox>

<TextBlock Margin="3" Grid.Row="3" Grid.Column="0">ProductImage:</TextBlock>
<TextBox Name="txtProductImage" Margin="3" Grid.Row="3" Grid.Column="1" Text="{Binding Path=ProductImage}"></TextBox>

<TextBlock Margin="3" Grid.Row="4" Grid.Column="0">UnitCost:</TextBlock>
<TextBox Name="txtUnitCost" Margin="3" Grid.Row="4" Grid.Column="1" Text="{Binding Path=UnitCost}">

</TextBox>

<TextBox Name="txtDescription" Margin="3" Grid.Row="5" Grid.Column="0" Grid.ColumnSpan="2" TextWrapping="Wrap"
Text="{Binding Path=Description}" ScrollViewer.VerticalScrollBarVisibility="Visible"></TextBox>
</Grid>
</Grid>

</Window>

using ClassLibrary;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
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 CollectionBinding
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}

public ObservableCollection<Product> products;

private void btnGetProducts_Click_1(object sender, RoutedEventArgs e)
{
products = StoreDB.GetProducts();
lstProducts.ItemsSource = products;
}

}

}

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ClassLibrary
{
public class StoreDB
{
public static string connString = Properties.Settings.Default.ConnectionString;

public static Product GetProductByID(int id)
{
Product p = null;
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("GetProductByID", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ProductID", id);
try
{
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
p = new Product()
{
CategoryID = (int)reader[1],
ModelNumber = reader[2].ToString(),
ModelName = reader[3].ToString(),
ProductImage=reader[4].ToString(),
UnitCost = (decimal)reader[5],
Description = reader[6].ToString()
};
}
return p;

}
catch (Exception)
{

throw;
}
finally
{
con.Close();
}
}

public static void UpdateProductByID(int ProductID,Product p)
{
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("UpdateProductByID", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ProductID",ProductID);
cmd.Parameters.AddWithValue("@CategoryID",p.CategoryID);
cmd.Parameters.AddWithValue("@ModelNumber",p.ModelNumber);
cmd.Parameters.AddWithValue("@ModelName",p.ModelName);
cmd.Parameters.AddWithValue("@ProductImage",p.ProductImage);
cmd.Parameters.AddWithValue("@UnitCost",p.UnitCost);
cmd.Parameters.AddWithValue("@Description",p.Description);
try
{
con.Open();
cmd.ExecuteNonQuery();
}
catch (Exception)
{

throw;
}
finally
{
con.Close();
}
}

public static void InsertProduct(Product p)
{
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("InsertProduct", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@CategoryID", p.CategoryID);
cmd.Parameters.AddWithValue("@ModelNumber", p.ModelNumber);
cmd.Parameters.AddWithValue("@ModelName", p.ModelName);
cmd.Parameters.AddWithValue("@ProductImage", p.ProductImage);
cmd.Parameters.AddWithValue("@UnitCost", p.UnitCost);
cmd.Parameters.AddWithValue("@Description", p.Description);
try
{
con.Open();
cmd.ExecuteNonQuery();
}
catch (Exception)
{

throw;
}
finally
{
con.Close();
}
}

public static void DeleteProductByID(int id)
{
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("DeleteProductByID", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
cmd.Parameters.AddWithValue("@ProductID", id);
try
{
con.Open();
cmd.ExecuteNonQuery();
}
catch (Exception)
{

throw;
}
finally
{
con.Close();
}
}

public static ObservableCollection<Product> GetProducts()
{
ObservableCollection<Product> products = new ObservableCollection<Product>();
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("GetProducts", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
try
{
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
products.Add(new Product()
{
ProductID = (int)reader[0],
CategoryID = (int)reader[1],
ModelNumber = reader[2].ToString(),
ModelName = reader[3].ToString(),
ProductImage = reader[4].ToString(),
UnitCost = (decimal)reader[5],
Description = reader[6].ToString()
});
}
return products;

}
catch (Exception)
{
throw;
}
finally
{
con.Close();
}
}

public static DataSet GetProductsAndCategories()
{
SqlConnection con = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand("GetProducts", con);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
DataSet ds = new DataSet();
SqlDataAdapter adatper = new SqlDataAdapter(cmd);
adatper.Fill(ds, "Products");
cmd.CommandText = "GetCategories";
adatper.Fill(ds, "Categories");
DataRelation rel = new DataRelation("CategoryProduct", ds.Tables["Categories"].Columns["CategoryID"], ds.Tables["Products"].Columns["CategoryID"]);
return ds;
}
}

}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ClassLibrary
{
public class Product
{
public int ProductID { get; set; }
public int CategoryID { get; set; }
public string ModelNumber { get; set; }
public string ModelName { get; set; }
public string ProductImage { get; set; }
public decimal UnitCost { get; set; }
public string Description { get; set; }

public Product(int CategoryID = 0, string ModelNumber = "",
string ModelName = "", string ProductImage = "", decimal UnitCost=0,string Description="")
{
this.CategoryID = CategoryID;
this.ModelNumber = ModelNumber;
this.ModelName = ModelName;
this.ProductImage = ProductImage;
this.UnitCost = UnitCost;
this.Description = Description;
}

}
}

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WPF数据模板的数据触发器的使用

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