How WPF XAML Binding Static Class Resources

PS: I haven't written WPF for a while, and some technologies have forgotten how to implement it. The egg hurts. Write it down when you encounter a technology in the future.

Method 1: Via {Binding MailPattern, Source={x:Static controls:RegexPatterns.Instance}}

1: First give an example of a resource class RegexPatterns.

namespace DN.Controls.Util
{
    
    
    public sealed class RegexPatterns
    {
    
    
        private static RegexPatterns _instance;
        public static RegexPatterns Instance
        {
    
    
            get
            {
    
    
                if (_instance == null)
                    _instance = new RegexPatterns();
                return _instance;
            }
            protected set => _instance = value;
        }

        /// <summary>
        /// 邮件正则匹配表达式
        /// </summary>
        public string MailPattern {
    
     get; } =
            @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";
    }
}

2: XAML use

<Grid x:Class="DN.ORM.Designer.ServerConfigForm"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:controls="http://schemas.denisvuyka.wordpress.com/DN.Controls"
      Margin="10">

    <Grid.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="pack://application:,,,/DN.Controls;component/Themes/Styles/TextBox.xaml" />
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Grid.Resources>

    <Grid.RowDefinitions>
        <RowDefinition Height="30" />
    </Grid.RowDefinitions>
    <controls:MSTextBox Width="300"
                        controls:InfoElement.Necessary="True"
                        controls:InfoElement.Placeholder=""
                        controls:InfoElement.RegexPattern="{Binding MailPattern , Source={x:Static controls:RegexPatterns.Instance}}"
                        controls:InfoElement.Title="服务器IP"
                        controls:InfoElement.TitlePlacement="Left"
                        controls:InfoElement.TitleWidth="120"
                        ShowClearButton="True" />
</Grid>

Observe the following code:

"{Binding MailPattern , Source={x:Static controls:RegexPatterns.Instance}}"

among them

x:Static : The referenced static property can be used to provide the value of the property in XAML.

controls : points to the domain name space of the RegexPatterns class.
[assembly: XmlnsDefinition(“http://schemas.denisvuyka.wordpress.com/DN.Controls”, “DN.Controls.Util”)]

RegexPatterns.Instance : The static object of RegexPatterns.

Method two (replenish when encountered)