月更

AntDesignWPF/Converters/StringToMarkDownConverter.cs

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+using System;
+using System.Globalization;
+using System.Text.RegularExpressions;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Media;
+
+namespace AntDesign.WPF.Converters
+{
+    public class StringToMarkDownConverter : IValueConverter
+    {
+        private static StringToMarkDownConverter instance;
+
+        // Explicit static constructor to tell C# compiler
+        // not to mark type as beforefieldinit
+        static StringToMarkDownConverter() { }
+
+        private StringToMarkDownConverter() { }
+
+        public static StringToMarkDownConverter Instance
+        {
+            get { return instance ?? (instance = new StringToMarkDownConverter()); }
+        }
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            var str       = value as string;
+            var textBlock = new TextBlock() { TextWrapping = TextWrapping.Wrap };
+
+            if (!string.IsNullOrEmpty(str))
+            {
+                string pattern = @"`(.*?)`";
+                int index      = 0;
+
+                var inlines    = textBlock.Inlines;
+                str            = str.Replace(@"\n", Environment.NewLine);
+
+                var foreground = new SolidColorBrush(Color.FromRgb(31, 46, 59));
+                var background = new SolidColorBrush(Color.FromRgb(242, 244, 245));
+
+                foreach (Match match in Regex.Matches(str, pattern))
+                {
+                    inlines.Add(str.Substring(index, match.Index - index));
+                    inlines.Add(new Run(match.Value.Replace('`',' ')) { Foreground = foreground, Background = background });
+                    index = match.Index + match.Length;
+                }
+
+                inlines.Add(str.Substring(index));
+            } 
+
+            return textBlock;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+    }
+}