如何從後面的代碼綁定到XAML資源顏色

Question

我無法將來自後面的代碼的顏色綁定到在XAML中定義爲資源的顏色。 該綁定對於文本（又名消息）工作正常，但我無法完成XAML中定義的顏色。 這裏是我正在使用的精簡代碼。

的XAML：

<Window x:Class="WpfApplication3.MainWindow" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     Title="MainWindow" Height="350" Width="525"> 
<Window.Resources> 
     <SolidColorBrush x:Key="BlueBrush" Color="#FFCFEDFF" /> 
     <SolidColorBrush x:Key="GreenBrush" Color="#FFE5EFC8" /> 
</Window.Resources> 

<Grid> 
    <ListBox ItemsSource="{Binding List, ElementName=UI}" x:Name="listBox" > 
      <ListBox.ItemTemplate> 
       <DataTemplate> 
        <Grid> 
         <Grid.Background> 
>>>       <SolidColorBrush Color="{StaticResource {Binding Path=Background}}"/> <<< Here is my problem <<< 
         </Grid.Background> 
        <TextBlock Text="{Binding Message}"/> 
       </Grid> 
      </DataTemplate> 
     </ListBox.ItemTemplate> 
    </ListBox> 
</Grid> 
</Window> 

背後的代碼：

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 WpfApplication3 
{ 
    public partial class MainWindow : Window 
    { 
     private ObservableCollection<Line> buffer; 

     public MainWindow() 
     { 
      InitializeComponent(); 
      buffer = new ObservableCollection<Line>(); 

      listBox.ItemsSource = buffer; 
      buffer.Add(new Line("Line1", "BlueBrush")); 
      buffer.Add(new Line("Line2", "GreenBrush")); 
     } 

     public class Line 
     { 
      private string _message; 
      private string _background; 

      public Line(String message, String background) 
      { 
       this._message = message; 
       this._background = background; 
      } 

      public string Message 
      { 
       get { return _message; } 
       set { _message = value; } 
      } 

      public string Background 
      { 
       get { return _background; } 
       set { _background = value; } 
      } 
     } 
    } 
} 

Answer 1

創建一個新的屬性稱爲BackgroundBrush，並使用此代碼添加到您的字符串轉換爲刷：

public Brush BackgroundBrush => return (SolidColorBrush)new BrushConverter().ConvertFromString(this.Background); 

使用綁定關鍵字綁定到它（不需要以靜態資源）：

{Binding BackgroundBrush} 

Answer 2

只需綁定你Background到Brush屬性。

<Grid> 
    <ListBox ItemsSource="{Binding List, ElementName=UI}" x:Name="listBox" > 
     <ListBox.ItemTemplate> 
      <DataTemplate> 
       <Grid Background="{Binding Background}"> 
        <TextBlock Text="{Binding Message}"/> 
       </Grid> 
      </DataTemplate> 
     </ListBox.ItemTemplate> 
    </ListBox> 
</Grid> 

，改變你的String物業Brush。

public partial class MainWindow : Window 
     { 
      public MainWindow() 
      { 
       InitializeComponent(); 
       buffer = new ObservableCollection<Line>(); 

       listBox.ItemsSource = buffer; 
       buffer.Add(new Line("Line1", new SolidColorBrush(Colors.Blue))); 
       buffer.Add(new Line("Line2", new SolidColorBrush(Colors.Green))); 
      } 
      private ObservableCollection<Line> buffer; 

      public class Line 
      { 
       private string _message; 
       private Brush _background; 

       public Line(String message, Brush background) 
       { 
        this._message = message; 
        this._background = background; 
       } 

       public string Message 
       { 
        get { return _message; } 
        set { _message = value; } 
       } 

       public Brush Background 
       { 
        get { return _background; } 
        set { _background = value; } 
       } 
      } 
     }