What is the best way to get the pixel width of all text entry fields?

Question

Hello Microsoft, I am working on company software which uses WPF. We are currently working on translating all of the text of the program into another language. I would like to ensure that the translated text will not be cut off in the text fields of the program. I am thinking that the best way to do this is to determine pixel width of all text fields, then compare that to the pixel width of the translated text. Do you agree? If so, is there any convenient way to get the pixel width of all text fields?

Answer 1

@Corbett Cappon, Welcome to Microsoft Q&A, you could try to use FormattedText class to get the pixel width of the text entry fields. Here is a code example you could refer to. xaml:

<TextBlock x:Name="text1" Width="100" Height="50" VerticalAlignment="Top" Text="test1"></TextBlock>

c# code:

var formatted = new FormattedText(
            text1.Text, CultureInfo.CurrentUICulture, FlowDirection.LeftToRight,
            new Typeface(text1.FontFamily, text1.FontStyle, text1.FontWeight, text1.FontStretch),
                         text1.FontSize, text1.Foreground, VisualTreeHelper.GetDpi(this).PixelsPerDip);
            Console.WriteLine(formatted.Width);

we could see the actual pixel width:

Based on my research, it seems that there is no direct way to get all text entry controls. I am afraid that you may could try to use enum to do it, like the following:

private void btntest_Click(object sender, RoutedEventArgs e)
        {
            //var formatted = new FormattedText(
            //text1.Text, CultureInfo.CurrentUICulture, FlowDirection.LeftToRight,
            //new Typeface(text1.FontFamily, text1.FontStyle, text1.FontWeight, text1.FontStretch),
            //             text1.FontSize, text1.Foreground, VisualTreeHelper.GetDpi(this).PixelsPerDip);
            foreach (TextBlock tb in FindVisualChildren<TextBlock>(window1))
            {
                // get textbolock pixel width
                double d1 = GetWidth(tb);
                Console.WriteLine(d1);
            }
            foreach (TextBox tb in FindVisualChildren<TextBox>(window1))
            {
                // get textbox pixel width
                double d1 = GetWidth(tb);
                Console.WriteLine(d1);
            }
            foreach (PasswordBox tb in FindVisualChildren<PasswordBox>(window1))
            {
                // get passwordbox pixel width
                double d1 = GetWidth(tb);
                Console.WriteLine(d1);
            }

        }

        public double GetWidth(TextBox box)
        {
            var formatted = new FormattedText(
            box.Text, CultureInfo.CurrentUICulture, FlowDirection.LeftToRight,
            new Typeface(box.FontFamily, box.FontStyle, box.FontWeight, box.FontStretch),
                         box.FontSize, box.Foreground, VisualTreeHelper.GetDpi(this).PixelsPerDip);
            return formatted.Width;
        }
        public double GetWidth(TextBlock box)
        {
            var formatted = new FormattedText(
            box.Text, CultureInfo.CurrentUICulture, FlowDirection.LeftToRight,
            new Typeface(box.FontFamily, box.FontStyle, box.FontWeight, box.FontStretch),
                         box.FontSize, box.Foreground, VisualTreeHelper.GetDpi(this).PixelsPerDip);
            return formatted.Width;
        }
        public double GetWidth(PasswordBox box)
        {
            var formatted = new FormattedText(
            box.Password, CultureInfo.CurrentUICulture, FlowDirection.LeftToRight,
            new Typeface(box.FontFamily, box.FontStyle, box.FontWeight, box.FontStretch),
                         box.FontSize, box.Foreground, VisualTreeHelper.GetDpi(this).PixelsPerDip);
            return formatted.Width;
        }
        public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
        {
            if (depObj == null) yield return (T)Enumerable.Empty<T>();
            for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
            {
                DependencyObject ithChild = VisualTreeHelper.GetChild(depObj, i);
                if (ithChild == null) continue;
                if (ithChild is T t) yield return t;
                foreach (T childOfChild in FindVisualChildren<T>(ithChild)) yield return childOfChild;
            }
        }

Hope my solution could be helpful for you. Best Regards, Jack

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