private void NumericUpDown1_Enter(object sender, EventArgs e) { NumericUpDown1.Select(0, NumericUpDown1.Text.Length); } (Note that the Text property is hidden in Intellisense, but it’s there)
The Extended WPF Toolkit has one: NumericUpDown
Simply use the IntegerUpDown control in the Extended.Wpf.Toolkit You can use it like this: Add to your XAML the following namespace: xmlns:xctk=”http://schemas.xceed.com/wpf/xaml/toolkit” In your XAML where you want the control use: <xctk:IntegerUpDown Name=”myUpDownControl” />
Add a preview text input event. Like so: <TextBox PreviewTextInput=”PreviewTextInput” />. Then inside that set the e.Handled if the text isn’t allowed. e.Handled = !IsTextAllowed(e.Text); I use a simple regex in IsTextAllowed method to see if I should allow what they’ve typed. In my case I only want to allow numbers, dots and dashes. private … Read more