diff --git a/Toolkit.Foundation/CloseEventArgs.cs b/Toolkit.Foundation/CloseEventArgs.cs
index 663fe4f..1740d41 100644
--- a/Toolkit.Foundation/CloseEventArgs.cs
+++ b/Toolkit.Foundation/CloseEventArgs.cs
@@ -1,3 +1,3 @@
 namespace Toolkit.Foundation;
 
-public record CloseEventArgs<TSender>(TSender? Sender = default);
\ No newline at end of file
+public record CloseEventArgs<TSender>(TSender? Sender = default);
diff --git a/Toolkit.Foundation/Closed.cs b/Toolkit.Foundation/Closed.cs
new file mode 100644
index 0000000..0ae6bd1
--- /dev/null
+++ b/Toolkit.Foundation/Closed.cs
@@ -0,0 +1,9 @@
+namespace Toolkit.Foundation;
+
+public record Closed
+{
+    public static ClosedEventArgs<TSender> As<TSender>(TSender sender) => new(sender);
+
+    public static ClosedEventArgs<TSender> As<TSender>() where TSender : new() => new(new TSender());
+}
+
diff --git a/Toolkit.Foundation/ClosedEventArgs.cs b/Toolkit.Foundation/ClosedEventArgs.cs
new file mode 100644
index 0000000..0b0cae6
--- /dev/null
+++ b/Toolkit.Foundation/ClosedEventArgs.cs
@@ -0,0 +1,3 @@
+namespace Toolkit.Foundation;
+
+public record ClosedEventArgs<TSender>(TSender? Sender = default);
diff --git a/Toolkit.Foundation/Opened.cs b/Toolkit.Foundation/Opened.cs
new file mode 100644
index 0000000..f2bc20e
--- /dev/null
+++ b/Toolkit.Foundation/Opened.cs
@@ -0,0 +1,8 @@
+namespace Toolkit.Foundation;
+
+public record Opened
+{
+    public static OpenedEventArgs<TSender> As<TSender>(TSender sender) => new(sender);
+
+    public static OpenedEventArgs<TSender> As<TSender>() where TSender : new() => new(new TSender());
+}
\ No newline at end of file
diff --git a/Toolkit.Foundation/OpenedEventArgs.cs b/Toolkit.Foundation/OpenedEventArgs.cs
new file mode 100644
index 0000000..ccb429b
--- /dev/null
+++ b/Toolkit.Foundation/OpenedEventArgs.cs
@@ -0,0 +1,3 @@
+namespace Toolkit.Foundation;
+
+public record OpenedEventArgs<TSender>(TSender? Sender = default);
\ No newline at end of file