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Asked: 2026-05-11T12:00:11+00:00

I have a small WPF application, which has a Canvas and a Grid. I

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I have a small WPF application, which has a Canvas and a Grid. I placed some custom user controls on the Grid. Now I would like to capture some mouse events on them. As a consequence of one event I would like to add (or modify) something to the canvas. However in the user control, you don’t have a reference to the underlying canvas. First question, is there a way to get this reference, for example like getElementById(..) in JavaScript.

Also I know that you should avoid such references, if you want a clean architecture. In this case, whats a good practice to catch events at a specific user control and then to be able to invoke something on another object.

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  1. You do have access to the Canvas, Grid or any other element in your UserControl. The easiest way yo access them is to make sure each one has a name which is done by using the x:Name attribute. 

    <Grid x:Name='myGrid'>

    Then within your UserControl you can access it with myGrid. To access a Grid from outside the UserControl you would need to create a method in your UserControl that allowed you to manipulate it.

    There is a this.FindName method you can use in a UserControl which is the equivalent of javascript’s getElementById but you shouldn’t need to use it given you can access objects directly with their name.

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