Merge pull request #2 from Santhosh-SF4792/main

Update the README.md file

Author: Lakshminatarajan

README.md

@@ -1 +1,53 @@
-**[View document in Syncfusion Xamarin Knowledge base](https://www.syncfusion.com/kb/12142/how-to-conditionally-hide-the-checkbox-in-xamarin-forms-treeview-sftreeview)**
+# hide-checkbox-treeview-xamarin
+How to conditionally hide the checkbox in Xamarin.Forms TreeView (SfTreeView)
+
+## Sample
+
+### XAML
+Bind the SfCheckBox.IsVisible property with TreeViewNode.Level and define converter to handle the Visibility.
+```xaml
+<treeView:SfTreeView x:Name="treeView"
+                    ItemTemplateContextType="Node"
+                    CheckBoxMode="Recursive" 
+                    AutoExpandMode="RootNodesExpanded"
+                    CheckedItems="{Binding CheckedItems}"
+                    ItemsSource="{Binding Folders}">
+    <treeView:SfTreeView.HierarchyPropertyDescriptors>
+        <treeViewEngine:HierarchyPropertyDescriptor TargetType="{x:Type local:Folder}" ChildPropertyName="SubFolder"/>
+        <treeViewEngine:HierarchyPropertyDescriptor TargetType="{x:Type local:SubFolder}" ChildPropertyName="Files"/>
+        <treeViewEngine:HierarchyPropertyDescriptor TargetType="{x:Type local:File}" ChildPropertyName="SubFiles"/>
+    </treeView:SfTreeView.HierarchyPropertyDescriptors>
+ 
+    <treeView:SfTreeView.ItemTemplate>
+        <DataTemplate>
+            <Grid Padding="5">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="40"/>
+                    <ColumnDefinition Width="*"/>
+                </Grid.ColumnDefinitions>
+                <checkBox:SfCheckBox x:Name="CheckBox" IsChecked="{Binding IsChecked, Mode=TwoWay}" CornerRadius="2" IsVisible="{Binding Level, Converter={StaticResource checkBoxVisibilityConverter}}"/>
+                <Label Text="{Binding Content.FileName}" VerticalOptions="CenterAndExpand" HorizontalOptions="StartAndExpand" Grid.Column="1"/>
+            </Grid>
+        </DataTemplate>
+    </treeView:SfTreeView.ItemTemplate>
+</treeView:SfTreeView>
+```
+
+### Converter
+```csharp
+public class CheckBoxVisibilityConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        return (int)value == 0 ? false : true;
+    }
+}
+```
+
+## Requirements to run the demo
+
+To run the demo, refer to [System Requirements for Xamarin](https://help.syncfusion.com/xamarin/system-requirements)
+
+## Troubleshooting
+### Path too long exception
+If you are facing path too long exception when building this example project, close Visual Studio and rename the repository to short and build the project.