initial commit

Avalonia.PropertyGrid/Converters/NumericFormatConverter.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Globalization;
+using Avalonia.Data.Converters;
+
+namespace Avalonia.PropertyGrid.Controls;
+
+/// <summary>
+/// Converts PropertyType to appropriate numeric format string
+/// </summary>
+public class NumericFormatConverter : IValueConverter
+{
+    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        if (value is Type type)
+        {
+            // Floating point types use decimal places
+            if (type == typeof(float) || type == typeof(double) || type == typeof(decimal))
+            {
+                return "N2"; // 2 decimal places
+            }
+
+            // Integer types use no decimal places
+            return "N0";
+        }
+
+        return "N0";
+    }
+
+    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}