How to get the resource key from a control?

Question

How to get the resource key from a control?

Wpf control can use the pre-defined resource in runtime. Is it able to get the resource key from a control? And how?

Thanks!

<Window
    x:Class="GetResourceKeyWpf.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:system="clr-namespace:System;assembly=System.Runtime"
    Width="800"
    Height="450"
    WindowStartupLocation="CenterScreen">
    <Window.Resources>
        <system:String x:Key="MyName">Will</system:String>
        <system:String x:Key="MyAddress">Beijing</system:String>
    </Window.Resources>
    <StackPanel>
        <TextBlock Loaded="MyNameTb_Loaded" Text="{StaticResource MyName}" />
        <TextBlock Loaded="MyAddressTb_Loaded" Text="{DynamicResource MyAddress}" />
    </StackPanel>
</Window>

using System.Windows;

namespace GetResourceKeyWpf;

public sealed partial class MainWindow
{
    public MainWindow()
    {
        InitializeComponent();
    }

    private void MyNameTb_Loaded(object sender, RoutedEventArgs e)
    {
        // Is it able to the static resource key "MyName" for text property?
    }

    private void MyAddressTb_Loaded(object sender, RoutedEventArgs e)
    {
        // Is it able to the dynamic resource key "MyAddress" text property?
    }
}

Answer 1

Hi,@William Liu. Welcome to Microsoft Q&A. 

In WPF, you could get all x:Key in Resources through this.Resources.Keys.

The reference code is as follows.

<Window.Resources>
    <system:String x:Key="MyName">Will</system:String>
    <system:String x:Key="MyAddress">Beijing</system:String>
</Window.Resources>
<StackPanel>
    <TextBlock x:Name="Text1" Loaded="MyNameTb_Loaded"/>
    <TextBlock x:Name="Text2" Loaded="MyAddressTb_Loaded"/>
</StackPanel>

    public partial class MainWindow : Window
    {
        List<string> keys = new List<string>();
        public MainWindow()
        {
            InitializeComponent();        
            foreach (string key in this.Resources.Keys) { 
                keys.Add(key);
            }
        }

        private void MyNameTb_Loaded(object sender, RoutedEventArgs e)
        {
            Text1.Text = keys[0];
        }

        private void MyAddressTb_Loaded(object sender, RoutedEventArgs e)
        {
            Text2.Text = keys[1];
        }
    }

If you want to use key-value data types in XAML, you could try using DictionaryEntry. Here is how to use it.

xmlns:collections="clr-namespace:System.Collections;assembly=mscorlib"

<Window.Resources>
    <collections:DictionaryEntry x:Key="MyDictionaryEntry" Key=" MyName " Value=" Will "></collections:DictionaryEntry>
</Window.Resources>
<StackPanel>
    <TextBlock Text="{Binding Path=Key,Source={StaticResource MyDictionaryEntry}}"></TextBlock>
    <TextBlock Text="{Binding Path=Value,Source={StaticResource MyDictionaryEntry}}"></TextBlock>
</StackPanel>

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