FindVisualChild reference issue

by

FindVisualChild method is not provided by WPF framework, you have to add them. May be you want this:

public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj)
       where T : DependencyObject
{
    if (depObj != null)
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
        {
            DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
            if (child != null && child is T)
            {
                yield return (T)child;
            }

            foreach (T childOfChild in FindVisualChildren<T>(child))
            {
                yield return childOfChild;
            }
        }
    }
}

public static childItem FindVisualChild<childItem>(DependencyObject obj)
    where childItem : DependencyObject
{
    foreach (childItem child in FindVisualChildren<childItem>(obj))
    {
        return child;
    }

    return null;
}

Add these methods in some utility class so they can be reuse.

More Related Contents:

  1. How to get ToolTip from WPF Data Grid Column Header (DataGridTemplateColumn) in code?
  2. How do I bind a WPF DataGrid to a variable number of columns?
  3. Accessing UI (Main) Thread safely in WPF
  4. programmatically add column & rows to WPF Datagrid
  5. Select multiple items from a DataGrid in an MVVM WPF project
  6. How to bind DataTable to Datagrid
  7. Datagrid binding in WPF
  8. DataGrid get selected rows’ column values
  9. WPF iterate through datagrid
  10. DataGrid shows path of image instead of image itself
  11. How can I set the color of a selected row in DataGrid
  12. Improve WPF DataGrid performance
  13. How to hide wpf datagrid columns depending on a property
  14. DataGrid column width doesn’t auto-update
  15. WPF Datagrid Get Selected Cell Value
  16. Data is visible in DataSet visualizer but does not show in a DataGrid
  17. How to build A WPF Datagrid with an unknown number of columns
  18. Date formatting in WPF datagrid
  19. Button in a column, getting the row from which it came on the Click event handler
  20. Merge Cells in WPF DataGrid
  21. DataGrid row content vertical alignment
  22. WPF DataGrid: DataGridComboxBox ItemsSource Binding to a Collection of Collections
  23. OpenClipboard failed when copy pasting data from WPF DataGrid
  24. How do I bind a List to a WPF DataGrid?
  25. ScrollIntoView for WPF DataGrid (MVVM)
  26. Binding datagrid column width
  27. WPF DataGrid – Event for New Rows?
  28. How to bind column header to property in ViewModel? (WPF MVVM)
  29. Add context menu in datagrid, how to get the select Item value
  30. Sort a wpf datagrid programmatically

Leave a Comment