diff --git a/src/Controls/tests/TestCases.HostApp/Controls.TestCases.HostApp.csproj b/src/Controls/tests/TestCases.HostApp/Controls.TestCases.HostApp.csproj
index 6f1dbbc2adcc..28d24283507a 100644
--- a/src/Controls/tests/TestCases.HostApp/Controls.TestCases.HostApp.csproj
+++ b/src/Controls/tests/TestCases.HostApp/Controls.TestCases.HostApp.csproj
@@ -23,14 +23,14 @@
     <_FastDeploymentDiagnosticLogging>True</_FastDeploymentDiagnosticLogging>
     <WindowsPackageType>None</WindowsPackageType>
     <!-- TODO: remove these obsolete nowarns and fix it in code -->
-    <NoWarn>$(NoWarn);CS0618;CS0672;XC0618;XC0022;XC0023;IL2026;IL2091;IL2067;IL2072;IL2087;IL3050</NoWarn>
+    <NoWarn>$(NoWarn);CS0618;CS0672;XC0618;IL2026;IL2091;IL2067;IL2072;IL2087;IL3050</NoWarn>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(_UseNativeAot)' == 'true' ">
     <PublishAot>true</PublishAot>
     <_IsPublishing>true</_IsPublishing>
     <IlcTreatWarningsAsErrors>false</IlcTreatWarningsAsErrors>
-    <WarningsNotAsErrors>IL3050;XC0022</WarningsNotAsErrors>
+    <WarningsNotAsErrors>IL3050</WarningsNotAsErrors>
     <DefineConstants>$(DefineConstants);NATIVE_AOT</DefineConstants>
   </PropertyGroup>
 
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue19127.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue19127.xaml
index 6d39f217b515..7887edb56079 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue19127.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue19127.xaml
@@ -2,7 +2,8 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="Maui.Controls.Sample.Issues.Issue19127"
-             xmlns:ns="clr-namespace:Maui.Controls.Sample.Issues">
+             xmlns:ns="clr-namespace:Maui.Controls.Sample.Issues"
+             x:DataType="ns:Issue19127Settings">
          <VerticalStackLayout
             VerticalOptions="Center">
             <Button Text="{Binding IsCameraEnabled, StringFormat='Toggle Camera View ({0})'}"
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue19831.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue19831.xaml
index c52ccd1a9fa7..4750478e42fb 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue19831.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue19831.xaml
@@ -9,7 +9,7 @@
                 <StackLayout>
                     <ListView>
                         <ListView.ItemTemplate>
-                            <DataTemplate>
+                            <DataTemplate x:DataType="x:String">
                                 <ViewCell>
                                     <ViewCell.ContextActions>
                                         <MenuItem Text="View"/>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue22104.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue22104.xaml
index 9592fd2e1e58..8bc981f0220f 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue22104.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue22104.xaml
@@ -2,7 +2,8 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
 				 xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
 				 xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
-				 x:Class="Maui.Controls.Sample.Issues.Issue22104">
+				 x:Class="Maui.Controls.Sample.Issues.Issue22104"
+				 x:DataType="local:Issue22104ViewModel">
 
   <ContentPage.BindingContext>
     <local:Issue22104ViewModel/>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue22467.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue22467.xaml
index 24485b836722..4046239840f8 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue22467.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue22467.xaml
@@ -19,7 +19,7 @@
                     SelectionMode="Single">
 
       <CollectionView.ItemTemplate>
-        <DataTemplate>
+        <DataTemplate x:DataType="x:String">
           <VerticalStackLayout>
 
             <VisualStateManager.VisualStateGroups>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue22674.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue22674.xaml
index 943db1148138..b73b117f77d3 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue22674.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue22674.xaml
@@ -1,14 +1,16 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             x:Class="Maui.Controls.Sample.Issues.Issue22674">
+             x:Class="Maui.Controls.Sample.Issues.Issue22674"
+             xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
+             x:DataType="local:Issue22674">
   <CollectionView 
     AutomationId="TestCollectionView"
     SelectionMode="Single"
 		ItemsSource="{Binding ItemList}"
 		SelectionChanged="OnCollectionViewSelectionChanged">
     <CollectionView.ItemTemplate>
-      <DataTemplate>
+      <DataTemplate x:DataType="x:String">
         <Label
           Text="{Binding .}" 
           HorizontalTextAlignment="Center" />
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue23868.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue23868.xaml
index 95c6fd0d62cd..cd289f310d34 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue23868.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue23868.xaml
@@ -4,7 +4,8 @@
              x:Class="Maui.Controls.Sample.Issues.Issue23868"
              xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
              x:Name="ThisMainPage"
-             Title="Main Page">
+             Title="Main Page"
+             x:DataType="local:Issue23868">
   <StackLayout>
     <Label Text="Pull to refresh twice to replicate the issue"
                HorizontalOptions="Center"
@@ -17,7 +18,7 @@
                 <CollectionView.Header>
                     <Grid ColumnDefinitions="2*,*"
                           HorizontalOptions="CenterAndExpand"
-                          IsVisible="{Binding Source={x:Reference collectionView}, Path=ItemsSource.Count, FallbackValue=False}">
+                          IsVisible="{Binding Items.Count, FallbackValue=False}">
                         <Label Grid.Column="0"
                                Text="Items Count:"
                                VerticalTextAlignment="Center"
@@ -29,7 +30,7 @@
                     </Grid>
                 </CollectionView.Header>
                 <CollectionView.ItemTemplate>
-                    <DataTemplate>
+                    <DataTemplate x:DataType="x:String">
                         <Label Text="{Binding}" HorizontalOptions="Center" VerticalOptions="Center"/>
                     </DataTemplate>
                 </CollectionView.ItemTemplate>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue25201.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue25201.xaml
index 6a0037a2cce5..7bd1be7ceee4 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue25201.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue25201.xaml
@@ -14,7 +14,7 @@
                  HeightRequest="100"
                  Padding="20"
                  Source="dotnet_bot"
-                 IsVisible="{Binding Source={x:Reference Switch1}, Path=IsToggled}"
+                 IsVisible="{Binding IsToggled, Source={x:Reference Switch1}, x:DataType=Switch}"
                  />
 
     <!-- https://github.com/dotnet/maui/issues/16713 -->
@@ -35,7 +35,7 @@
             AbsoluteLayout.LayoutFlags="SizeProportional"
             AbsoluteLayout.LayoutBounds="0,0,1.0,1.0"
             BackgroundColor="#80FFFFFF"
-            IsVisible="{Binding Source={x:Reference Switch2}, Path=IsToggled}"
+            IsVisible="{Binding IsToggled, Source={x:Reference Switch2}, x:DataType=Switch}"
             />
     </AbsoluteLayout>
   </VerticalStackLayout>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue25224.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue25224.xaml
index 1b35e0b3835a..f3ce4ab4401e 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue25224.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue25224.xaml
@@ -4,7 +4,8 @@
              x:Class="Maui.Controls.Sample.Issues.Issue25224"
              xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
              x:Name="ThisMainPage"
-             Title="Main Page">
+             Title="Main Page"
+             x:DataType="local:Issue25224+Issue25224ViewModel">
 
   <ContentPage.Resources>
     <DataTemplate x:Key="AdvancedTemplate">
@@ -42,15 +43,15 @@
              x:Name="searchBar"
              AutomationId="SearchBar"
              SearchCommand="{Binding FilterCommand}"
-             SearchCommandParameter="{Binding Source={x:Reference searchBar}, Path=Text}"
+             SearchCommandParameter="{Binding Text, Source={x:Reference searchBar}, x:DataType=SearchBar}"
              Placeholder="Filter" />
     <CollectionView Grid.Row="2"
                   x:Name="collectionView"
                   AutomationId="Success"
                   ItemsSource="{Binding Monkeys}"
-                  EmptyView="{Binding Source={x:Reference searchBar}, Path=Text}">
+                  EmptyView="{Binding Text, Source={x:Reference searchBar}, x:DataType=SearchBar}">
       <CollectionView.ItemTemplate>
-        <DataTemplate>
+        <DataTemplate x:DataType="local:Monkey">
           <Grid Padding="10">
             <Grid.RowDefinitions>
               <RowDefinition Height="Auto" />
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue25362.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue25362.xaml
index d66257d0af53..a4544a6327ba 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue25362.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue25362.xaml
@@ -2,8 +2,10 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              x:Class="Maui.Controls.Sample.Issues.Issue25362"
+             xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
              x:Name="Self"
-             Title="Issue25362">
+             Title="Issue25362"
+             x:DataType="local:Issue25362">
     <Grid RowDefinitions="Auto,*">
         <HorizontalStackLayout Grid.Row="0">
             <Button
@@ -19,9 +21,9 @@
 
             <CollectionView.Header>
                 <VerticalStackLayout>
-                    <VerticalStackLayout BindableLayout.ItemsSource="{Binding BindingContext.ItemListHeader, Source={x:Reference Self}}">
+                    <VerticalStackLayout BindableLayout.ItemsSource="{Binding ItemListHeader}">
                         <BindableLayout.ItemTemplate>
-                            <DataTemplate>
+                            <DataTemplate x:DataType="x:String">
                                 <Label Padding="10" Text="{Binding .}" />
                             </DataTemplate>
                         </BindableLayout.ItemTemplate>
@@ -34,7 +36,7 @@
             </CollectionView.Header>
 
             <CollectionView.ItemTemplate>
-                <DataTemplate>
+                <DataTemplate x:DataType="x:String">
                     <Label Padding="10" Text="{Binding .}" />
                 </DataTemplate>
             </CollectionView.ItemTemplate>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue25724.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue25724.xaml
index f3e557b6c025..d91ca1d0184d 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue25724.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue25724.xaml
@@ -4,7 +4,8 @@
              x:Class="Maui.Controls.Sample.Issues.Issue25724"
              xmlns:local="clr-namespace:Maui.Controls.Sample.Issues"
              x:Name="ThisMainPage"
-             Title="Main Page">
+             Title="Main Page"
+             x:DataType="local:Issue25724+Issue25724ViewModel">
 
   <Grid RowDefinitions="Auto,*">
 
@@ -28,7 +29,7 @@
       </CollectionView.Header>
 
       <CollectionView.ItemTemplate>
-        <DataTemplate>
+        <DataTemplate x:DataType="x:String">
           <Label Padding="20,5,5,5" Text="{Binding .}" />
         </DataTemplate>
       </CollectionView.ItemTemplate>
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issue7045.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issue7045.xaml
index 46ab4816aed1..18e8112922c8 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issue7045.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issue7045.xaml
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8" ?>
 <Shell xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
        xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-       x:Class="Maui.Controls.Sample.Issues.Issue7045">
+       x:Class="Maui.Controls.Sample.Issues.Issue7045"
+       xmlns:local="clr-namespace:Maui.Controls.Sample.Issues">
     <ShellContent
         Title="Main"
         Route="MainPage">
@@ -16,7 +17,7 @@
     <ShellContent
         Title="Detail"
         Route="DetialPage">
-        <ContentPage x:Name="DetailPage">
+        <ContentPage x:Name="DetailPage" x:DataType="local:Issue7045">
             <Shell.BackButtonBehavior>
                 <BackButtonBehavior
                     TextOverride="Back"
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml b/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml
index fd949799e5dc..32b4052ee734 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml
@@ -2,11 +2,12 @@
 <ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
              xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
              Title="Issue 8845"
-             x:Class="Maui.Controls.Sample.Issues.Issue8845">
+             x:Class="Maui.Controls.Sample.Issues.Issue8845"
+             xmlns:local="clr-namespace:Maui.Controls.Sample.Issues">
 
   <VerticalStackLayout>
-    <Picker AutomationId="MauiPicker1" x:Name="picker1" ItemDisplayBinding="{Binding DisplayName}"/>
-    <Picker AutomationId="MauiPicker2" x:Name="picker2" ItemDisplayBinding="{Binding DisplayName}"/>
+    <Picker AutomationId="MauiPicker1" x:Name="picker1" ItemDisplayBinding="{Binding DisplayName, x:DataType=local:Issue8845Item}"/>
+    <Picker AutomationId="MauiPicker2" x:Name="picker2" ItemDisplayBinding="{Binding DisplayName, x:DataType=local:Issue8845Item}"/>
     <Button AutomationId="UpdateButton" Text="Update" Clicked="Button_Clicked"/>
   </VerticalStackLayout>
 
diff --git a/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml.cs b/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml.cs
index 49173110572b..b88150436bb4 100644
--- a/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml.cs
+++ b/src/Controls/tests/TestCases.HostApp/Issues/Issues8845.xaml.cs
@@ -10,10 +10,10 @@ public partial class Issue8845 : ContentPage
 		public Issue8845()
 		{
 			InitializeComponent();
-			var items = new List<object>
+			var items = new List<Issue8845Item>
 				{
-					new { DisplayName = (string)null!},
-					new { DisplayName = "Not null"},
+					new Issue8845Item { DisplayName = (string)null!},
+					new Issue8845Item { DisplayName = "Not null"},
 				};
 			picker1.ItemsSource = items;
 			picker2.ItemsSource = items;
@@ -26,4 +26,9 @@ private void Button_Clicked(object sender, EventArgs e)
 		}
 
 	}
+
+	public class Issue8845Item
+	{
+		public string DisplayName { get; set; } = string.Empty;
+	}
 }
\ No newline at end of file