chore: use file-scoped namespace

src/Shared/HandyControlDemo_Shared/Tools/Converter/StringRepeatConverter.cs

@@ -3,43 +3,42 @@ using System.Globalization;
 using System.Text;
 using System.Windows.Data;
 
-namespace HandyControlDemo.Tools.Converter
+namespace HandyControlDemo.Tools.Converter;
+
+public class StringRepeatConverter : IValueConverter
 {
-    public class StringRepeatConverter : IValueConverter
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
     {
-        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        if (value is string strValue)
         {
-            if (value is string strValue)
+            var builder = new StringBuilder();
+            int num;
+            if (parameter is string numStr)
             {
-                var builder = new StringBuilder();
-                int num;
-                if (parameter is string numStr)
-                {
-                    if (!int.TryParse(numStr, out num))
-                    {
-                        return strValue;
-                    }
-                }
-                else if (parameter is int intValue)
-                {
-                    num = intValue;
-                }
-                else
+                if (!int.TryParse(numStr, out num))
                 {
                     return strValue;
                 }
-                for (var i = 0; i < num; i++)
-                {
-                    builder.Append(strValue);
-                }
-                return builder.ToString();
             }
-            return string.Empty;
-        }
-
-        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
-        {
-            throw new NotSupportedException();
+            else if (parameter is int intValue)
+            {
+                num = intValue;
+            }
+            else
+            {
+                return strValue;
+            }
+            for (var i = 0; i < num; i++)
+            {
+                builder.Append(strValue);
+            }
+            return builder.ToString();
         }
+        return string.Empty;
     }
-}
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        throw new NotSupportedException();
+    }
+}