WPF how do I create a textbox dynamically and find the textbox on a button click?

Question

I am creating a TextBox and a Button dynamically using the following code:

Button btnClickMe = new Button();
btnClickMe.Content = \"Cli         


        

Answer 1

If you want to do a comprehensive search through the visual tree of controls, you can use the VisualTreeHelper class.

Use the following code to iterate through all of the visual children of a control:

for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parentObj); i++)
{
    DependencyObject child = VisualTreeHelper.GetChild(parent, i);

    if (child is TextBox)
        // Do something
}

If you want to search down into the tree, you will want to perform this loop recursively, like so:

public delegate void TextBoxOperation(TextBox box);

public bool SearchChildren(DependencyObject parent, TextBoxOperation op)
{
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(parent); i++)
    {
        DependencyObject child = VisualTreeHelper.GetChild(parent, i);

        TextBox box = child as TextBox;

        if (box != null)
        {
            op.Invoke(box);
            return true;
        }

        bool found = SearchChildren(child, op);

        if (found)
            return true;
    }
}