private void textBox1_KeyPress_1(object sender, KeyPressEventArgs e)
        {
            if (!Char.IsNumber(e.KeyChar))
            {
                e.Handled = true;
            }
        }

------解决方案--------------------
探讨

C# code


        private void textBox1_KeyPress_1(object sender, KeyPressEventArgs e)
        {
            if (!Char.IsNumber(e.KeyChar))
            {
                e.Handled = true;
    ……


------解决方案--------------------
C# code
  /// <summary>
  /// 限制输入数字以外的字符
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void textbox_KeyPress(object sender, KeyPressEventArgs e)
  {
  if (((int)e.KeyChar < 48 || (int)e.KeyChar > 57) && e.KeyChar != 8)
  {
  e.Handled = true;
  }
  }

------解决方案--------------------
/^\d+(\.\d{2})?$/ 这是一个正则表达式可以用来做JS验证 具体可能有更好的表达式 验证的具体方法你去参考JS表单验证。有相当多的正则表达式验证方式

------解决方案--------------------
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
if ((e.KeyChar < '0' || e.KeyChar > '9') && e.KeyChar != 8 )
               e.Handled = true;
}

------解决方案--------------------
探讨


C# code
  /// <summary>
  /// 限制输入数字以外的字符
  /// </summary>
  /// <param name="sender"></param>
  /// <param name="e"></param>
  private void textbox_KeyPress(object sender, KeyPressEventArgs e)
  {
……