textbox只能输入数字

txtLocPort.KeyPress += Pub.KeyPress_NumInput;

/// <summary>
///  数字输入
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public static void KeyPress_NumInput(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar < '0' || e.KeyChar > '9') && e.KeyChar != 8)
e.KeyChar = (char)0;
}