MSDN WPF 샘플 따라하기 - BindingToStringFomat

BindingToStringFomat

데이터 바인딩의 결과로 문자열을 표시하려는 경우 Binding의 StringFormat 속성을 사용하면 쉽게 디스플레이를 사용자 정의 할 수 있습니다. 이 예제에서는 바인딩과 멀티 바인딩 시 사용되는 StringFormat에 대해 설명 합니다.

바인딩 객체 정의

1:  public class PurchaseItem  
2:    {  
3:      public PurchaseItem() { }  
4:      public PurchaseItem(string desc, double price, DateTime endDate)  
5:      {  
6:        Description = desc;  
7:        Price = price;  
8:        OfferExpires = endDate;  
9:      }  
10:      public string Description { get; set; }  
11:      public double Price { get; set; }  
12:      public DateTime OfferExpires { get; set; }  
13:      public override string ToString()  
14:      {  
15:        return $"{Description}, {Price:C}, {OfferExpires:D}";  
16:      }  
17:    }  

바인딩 컬렉션 객체 정의

1:  public class ItemsForSale : ObservableCollection<PurchaseItem>  
2:    {  
3:      public ItemsForSale()  
4:      {  
5:        Add((new PurchaseItem("Snowboard and bindings", 120, new DateTime(2009, 1, 1))));  
6:        Add((new PurchaseItem("Inside C#, second edition", 10, new DateTime(2009, 2, 2))));  
7:        Add((new PurchaseItem("Laptop - only 1 year old", 499.99, new DateTime(2009, 2, 28))));  
8:        Add((new PurchaseItem("Set of 6 chairs", 120, new DateTime(2009, 2, 28))));  
9:        Add((new PurchaseItem("My DVD Collection", 15, new DateTime(2009, 1, 1))));  
10:        Add((new PurchaseItem("TV Drama Series", 39.985, new DateTime(2009, 1, 1))));  
11:        Add((new PurchaseItem("Squash racket", 60, new DateTime(2009, 2, 28))));  
12:      }  
13:    }  

Binding StringFormat

{0}은 원시 대상 객체를 나타내며 통화 서식의 경우 {0 : C}, 퍼센트 서식의 경우 {0 : P}, 16 진 서식의 경우 {0 : X}와 같이 다양한 서식 지정자가 지원됩니다.

1:  <ListView ItemsSource="{StaticResource MyData}">  
2:        <ListView.View>  
3:          <GridView>  
4:            <GridViewColumn DisplayMemberBinding="{Binding Path=Description}" />  
5:            <GridViewColumn DisplayMemberBinding="{Binding Path=Price, StringFormat=Now {0:c}!}" />  
6:          </GridView>  
7:        </ListView.View>  
8:      </ListView>  

Multi Binding StringFormat

1:  <ListBox ItemsSource="{StaticResource MyData}">  
2:        <ListBox.ItemTemplate>  
3:          <DataTemplate>  
4:            <TextBlock>  
5:              <TextBlock.Text>  
6:                <MultiBinding StringFormat="{}{0} -- Now only {1:C}!">  
7:                  <Binding Path="Description" />  
8:                  <Binding Path="Price" />  
9:                </MultiBinding>  
10:              </TextBlock.Text>  
11:            </TextBlock>  
12:          </DataTemplate>  
13:        </ListBox.ItemTemplate>  
14:      </ListBox>  

전체소스

1:  <Window x:Class="BindingToStringFomat.MainWindow"  
2:      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
3:      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
4:      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
5:      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
6:      xmlns:local="clr-namespace:BindingToStringFomat"  
7:      mc:Ignorable="d"  
8:      Title="MainWindow"  
9:      SizeToContent="WidthAndHeight">  
10:    <StackPanel>  
11:      <StackPanel.Resources>  
12:        <local:ItemsForSale x:Key="MyData" />  
13:      </StackPanel.Resources>  
14:      <TextBlock Margin="5,10,0,0" FontSize="20">Formatting a string on a Binding</TextBlock>  
15:      <TextBlock Margin="5" FontSize="14" TextWrapping="Wrap">  
16:        This ListView contains a list of items for sale.  
17:        The second column of the ListView displays a string that   
18:        includes the price of the object. The price is formatted as a currency.  
19:      </TextBlock>  
20:      <ListView ItemsSource="{StaticResource MyData}">  
21:        <ListView.View>  
22:          <GridView>  
23:            <GridViewColumn DisplayMemberBinding="{Binding Path=Description}" />  
24:            <GridViewColumn DisplayMemberBinding="{Binding Path=Price, StringFormat=Now {0:c}!}" />  
25:          </GridView>  
26:        </ListView.View>  
27:      </ListView>  
28:      <TextBlock FontSize="20" Margin="5,10,0,0">Formatting a string on a MultiBinding</TextBlock>  
29:      <TextBlock Margin="5" FontSize="14" TextWrapping="Wrap">  
30:        This ListBox contains a list of items for sale.   
31:        The ListBox displays a string for each item,   
32:        which includes the Description and the Price,   
33:        by setting the StringFormat property on a MultiBinding.  
34:      </TextBlock>  
35:      <ListBox ItemsSource="{StaticResource MyData}">  
36:        <ListBox.ItemTemplate>  
37:          <DataTemplate>  
38:            <TextBlock>  
39:              <TextBlock.Text>  
40:                <MultiBinding StringFormat="{}{0} -- Now only {1:C}!">  
41:                  <Binding Path="Description" />  
42:                  <Binding Path="Price" />  
43:                </MultiBinding>  
44:              </TextBlock.Text>  
45:            </TextBlock>  
46:          </DataTemplate>  
47:        </ListBox.ItemTemplate>  
48:      </ListBox>  
49:    </StackPanel>  
50:  </Window>