C#•6mo ago

MVVM Binding

I want to pass data to view model and store in list and show in collection View i am Binding in the Xaml.cs And Xmal I am getting this Issue no datacontex found for binding

2 Replies

Mayor McCheese•6mo ago

Is that a design time error?

SpReeD•6mo ago

Set the DataContext in XAML instead of setting it in C# in the constructor. First add the Namespace, like so

xmlns:vm="clr-namespace:MyProject.ViewModels"

xmlns:vm="clr-namespace:MyProject.ViewModels"

Then use it on the Window or Page like so

<Window.DataContext>
    <vm:MyWindowViewModel/>
</Window.DataContext>

<Window.DataContext>
    <vm:MyWindowViewModel/>
</Window.DataContext>

If this is plain WPF, as an alternative, you can set the DataContext for the DesignTime to get rid of the Warning. Note: It's not an Error, just the designer grumbling. To do so, add this attribute to the Window tag:

d:DataContext="{d:DesignInstance Type=local:MyView}"

d:DataContext="{d:DesignInstance Type=local:MyView}"

Note: It's actually more cleaner to set the DataContext via XAML and the latter will only set it for designtime.

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