Added ContainsKey.

4 years ago · f07f64dbf4
1 changed files with 6 additions and 0 deletions
--- a/src/Avalonia.Base/Utilities/AvaloniaPropertyDictionary.cs
+++ b/src/Avalonia.Base/Utilities/AvaloniaPropertyDictionary.cs
@ -104,6 +104,12 @@ namespace Avalonia.Utilities
            InsertEntry(new Entry(property, value), index);
        }

+        /// <summary>
+        /// Determines whether the collection contains the specified key.
+        /// </summary>
+        /// <param name="property">The key.</param>
+        public bool ContainsKey(AvaloniaProperty property) => TryGetEntry(property.Id, out _);
+
        /// <summary>
        /// Gets the key and value at the specified index.
        /// </summary>