c# - Use the correct type of BindingContext in xaml - Stack Overflow

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In my maui project, I have several bindings like this:

<Label
    Text={Binding BindingContext.Title, x:DataType=local:MyView, Source={RelativeSource Mode=FindAncestor, AncestorType={x:Type ContentPage}}} >
</Label>

The label is bound to the containing ContentPage. However, this results in error 'Binding: Property "Title" not found on "System.Object"'. The BindingContext in reality is the ViewModel which contains Title property. How could I specify the correct type of BindingContext to the binding?

In my maui project, I have several bindings like this:

<Label
    Text={Binding BindingContext.Title, x:DataType=local:MyView, Source={RelativeSource Mode=FindAncestor, AncestorType={x:Type ContentPage}}} >
</Label>

The label is bound to the containing ContentPage. However, this results in error 'Binding: Property "Title" not found on "System.Object"'. The BindingContext in reality is the ViewModel which contains Title property. How could I specify the correct type of BindingContext to the binding?

• c#
• xaml
• maui

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3 Answers 3

Sorted by: Reset to default 0

you should be able to do something like this

<ContentPage x:DataType="local:MyView" >
...
    <Label Text="{Binding Title}" />
...
</ContentPage>

Check the below code:

MyPage.xaml

<Label Text="{Binding Title}"/>

MyPage.xaml.cs

public partial class MyPage : ContentPage
{
    public MyPage()
    {
        InitializeComponent();
        BindingContext = new YourViewModel();

    }
}

YourViewModel.cs

public partial class YourViewModel: ObservableObject
{
 
    [ObservableProperty]
    bool isLoading;
}

Also i have a repository you may check as a sample

https://github/imoulas/sample-maui-net-expense-app

hope that helps

Because your Source is a ContentType, then, your x:DataType should also be ContentPage, right?

<Label
    Text={Binding Title,
                  x:DataType=ContentPage,
                  Source={RelativeSource Mode=FindAncestor, AncestorType={x:Type ContentPage}}} >
</Label>

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