添加项目文件。

Wpf.Ui.Extend/Converters/StringToColorConverter.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+using System.Windows.Data;
+using System.Windows.Media;
+
+using Wpf.Ui.Controls;
+
+namespace Wpf.Ui.Extend.Converters;
+public class StringToColorConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        return value.ToString();
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        string str = value.ToString();
+        Regex regex = new Regex("^#(?:[0-9a-fA-F]{3}){1,2}$");
+        if (regex.IsMatch(str))
+        {
+            var color = ColorConverter.ConvertFromString(str);
+            return color;
+        }
+        
+        return Binding.DoNothing;
+    }
+}
+/// <summary>
+/// 判断值是否为空
+/// </summary>
+public class StringIsEmptyConverter : IValueConverter
+{
+    #region IValueConverter 成员
+
+    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+    {
+        return string.IsNullOrEmpty(System.Convert.ToString(value));
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
+    {
+        return null;
+    }
+
+    #endregion
+}