diff --git a/src/Shared/HandyControlDemo_Shared/ViewModel/Controls/AutoCompleteTextBoxDemoViewModel.cs b/src/Shared/HandyControlDemo_Shared/ViewModel/Controls/AutoCompleteTextBoxDemoViewModel.cs
index d5a575a7..4a8e2d33 100644
--- a/src/Shared/HandyControlDemo_Shared/ViewModel/Controls/AutoCompleteTextBoxDemoViewModel.cs
+++ b/src/Shared/HandyControlDemo_Shared/ViewModel/Controls/AutoCompleteTextBoxDemoViewModel.cs
@@ -45,7 +45,7 @@ namespace HandyControlDemo.ViewModel
 
             foreach (var data in _dataList)
             {
-                if (data.Name.Contains(key, System.StringComparison.OrdinalIgnoreCase))
+                if (data.Name.ToLower().Contains(key.ToLower()))
                 {
                     Items.Add(data);
                 }