diff --git a/Bin/net40/SunnyUI.Demo.exe b/Bin/net40/SunnyUI.Demo.exe
index e5d5e345..d7d3139e 100644
Binary files a/Bin/net40/SunnyUI.Demo.exe and b/Bin/net40/SunnyUI.Demo.exe differ
diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index 65675943..87b3d1ed 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/Bin/net5.0-windows/SunnyUI.dll b/Bin/net5.0-windows/SunnyUI.dll
index 6906ac00..e1fdfdcb 100644
Binary files a/Bin/net5.0-windows/SunnyUI.dll and b/Bin/net5.0-windows/SunnyUI.dll differ
diff --git a/Bin/net5.0-windows/ref/SunnyUI.dll b/Bin/net5.0-windows/ref/SunnyUI.dll
index a71198cb..2eee05a0 100644
Binary files a/Bin/net5.0-windows/ref/SunnyUI.dll and b/Bin/net5.0-windows/ref/SunnyUI.dll differ
diff --git a/Bin/netcoreapp3.1/SunnyUI.dll b/Bin/netcoreapp3.1/SunnyUI.dll
index 58ac1ea5..006b02ce 100644
Binary files a/Bin/netcoreapp3.1/SunnyUI.dll and b/Bin/netcoreapp3.1/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UIHeaderButton.cs b/SunnyUI/Controls/UIHeaderButton.cs
index 71614ec1..1b389ecd 100644
--- a/SunnyUI/Controls/UIHeaderButton.cs
+++ b/SunnyUI/Controls/UIHeaderButton.cs
@@ -32,6 +32,7 @@ namespace Sunny.UI
 {
     [DefaultEvent("Click")]
     [DefaultProperty("Text")]
+    [ToolboxItem(true)]
     public class UIHeaderButton : UIControl, IButtonControl
     {
         public UIHeaderButton()