Numeric TextBox in C# - WPF [duplicate]

问题

This question already has an answer here:

• How do I get a TextBox to only accept numeric input in WPF? 30 answers

i want to create a textbox in WPF that only accept numbers... i've reaserched and people say to use keypress event or masked textbox, but they are in windows forms...

回答1:

For WPF:

private void textBox1_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
    if (!char.IsDigit(e.Text, e.Text.Length - 1))
        e.Handled = true;
}

For Windows Forms:

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    if (!char.IsDigit(e.KeyChar) )
        e.Handled = true;
}

来源：https://stackoverflow.com/questions/17505008/numeric-textbox-in-c-sharp-wpf