无法绑定到我的ViewModel集合

Question

全部 - 尝试做2件事：我有一个简单的应用程序，并试图将我的Viewmodel集合绑定到我的视图。记住有两种方法，但它们都卡在它们两个上：

方法1：使用网格作为容器来绑定textblock属性。

方法2：绑定对象的属性直接在我的视图中的正文块（未使用格作为容器及其DataContext属性）

Rule_Model_1.cs

public class Rule_Model_1 
{ 
    public string topMessage { get; set; } 
    public List<string> recipients { get; set; } 
    public string bottomMessage { get; set; } 
    public string hypLink { get; set; } 
    public OCCBlock blockType { get; set; } 

    public enum OCCBlock 
    { 
     HardBlock, 
     SoftBlock, 
     ModifyAndSend 
    } 
} 

Rule_VM_1的.cs

class Rule_VM_1 
{ 
    #region Properties 
    public List<Rule_Model_1> rule { get; set; } 
    #endregion 

    #region Constructor 
    public Rule_VM_1() 
    { 
     #region Initializing a Rule 
     rule = new List<Rule_Model_1>(); 

     rule.Add(new Rule_Model_1() 
     { 
      topMessage = "Lorem ipsum dolor sit amet.", 
      recipients = new List<string> {"pr@hotmail.com", "pra@gmail.com"}, 
      bottomMessage = "Lorem ipsum dolor sit amet", 
      hypLink = "http://www.abc.com", 
      blockType = Rule_Model_1.OCCBlock.HardBlock 
     }); 
     #endregion 
    } 
    #endregion 
} 

Rule_U I.xaml.cs

public partial class Rule_UI_1 : UserControl 
{ 
    Rule_VM_1 rulevm1; 
    public Rule_UI_1() 
    { 
     InitializeComponent(); 
     rulevm1 = new Rule_VM_1(); 
     DataContext = rulevm1; 
    } 
} 

Rule_UI.xaml

<UserControl x:Class="OCC_WPF_POC.Rule_UI_1" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     mc:Ignorable="d"> 
<GroupBox Header="Rule Details"> 
    <Grid HorizontalAlignment="Center" VerticalAlignment="Center"> 
     <Grid.ColumnDefinitions> 
      <ColumnDefinition Width="Auto"></ColumnDefinition> 
      <ColumnDefinition Width="*"></ColumnDefinition> 
     </Grid.ColumnDefinitions> 


     <Grid Grid.Column="1" DataContext="{Binding rule}"> 
      <Grid.RowDefinitions> 
       <RowDefinition Height="50"></RowDefinition> 
       <RowDefinition Height="200"></RowDefinition> 
       <RowDefinition Height="50"></RowDefinition> 
      </Grid.RowDefinitions> 
      <TextBlock Grid.Row="0" Text="{Binding topmessage}" /> 
     </Grid> 
    </Grid> 
</GroupBox> 

的观点仍显示什么。同样如上所述 - 我如何使这两种方法奏效？任何代码样品是极大的赞赏

图像附带

Answer 1

的问题是，需要一个列表视图绑定到一个集合属性（rule）。这应该工作：

<ListBox Grid.Column="1" ItemsSource="{Binding rule}"> 
    <ListBox.ItemTemplate> 
     <DataTemplate> 
      <TextBlock Text="{Binding topmessage}" /> 
     </DataTemplate> 
    </ListBox.ItemTemplate> 
</ListBox> 

绑定到网格，您可以使用索引[]设置DataContext：

<Grid Grid.Column="1" DataContext="{Binding rule[0]}"> 
    <TextBlock Grid.Row="0" Text="{Binding topmessage}" /> 
</Grid> 

而且没有网格：

<TextBlock Text="{Binding rule[0].topmessage}" />