Update AutoCompleteTextBoxDemoViewModel.cs

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))
+                if (data.Name.Contains(key, System.StringComparison.OrdinalIgnoreCase))
                 {
                     Items.Add(data);
                 }