How to access the wpf form controls which is inside the frame?

Arivazhagan K 20 Reputation points


My WPF main page contains the frame control and it is loaded with another WPF sub page. Now I need to get Datagrid data, which is inside the sub page, from the main page when clicking the button which is inside the main form.

I am loading the subForm inside the Main forms frame by using below line.

nav_Frame.Source = new Uri("UserControls/subForm.xaml", UriKind.RelativeOrAbsolute);


Windows Presentation Foundation
Windows Presentation Foundation
A part of the .NET Framework that provides a unified programming model for building line-of-business desktop applications on Windows.
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Accepted answer
  1. Hui Liu-MSFT 25,196 Reputation points Microsoft Vendor

    Hi,@Arivazhagan K. Welcome Microsoft Q&A. You could try to use the following code.

    First, give the DataGrid a name in the subForm.xaml file:

    <DataGrid x:Name="myDataGrid" ...>
        <!-- DataGrid content -->

    In the main page, after loading the subForm into the frame, you can access the DataGrid as follows:

    nav_Frame.Source = new Uri("UserControls/subForm.xaml", UriKind.RelativeOrAbsolute);
    var subForm = nav_Frame.Content as FrameworkElement; // Get the content of the frame
    var dataGrid = subForm?.FindName("myDataGrid") as DataGrid; // Find the DataGrid by its name
    if (dataGrid != null)
        // For example, you can retrieve data from the DataGrid
        var data = dataGrid.ItemsSource; // Assuming you have set the ItemsSource for the DataGrid
        // Do something with the data

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