摘要：privatevoid NumberAccpter(object sender, KeyPressEventArgs e) { int keyValue = (int)e.KeyChar; if ((keyValue >=48&& keyValue <=57) || keyValue ==8|| keyValue ==46) { if (sender !=null&& sender is TextBox && keyValue ==46) { if (((TextBox)sender).Text.IndexOf(".&quo 阅读全文

摘要：关键代码：设置窗体的FormBorderStyle为None，和TransparencyKey为Fuchsia(为图片背景色)必须和图片背景色一样。是代码：using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace WindowsFormsApplication1{ public ... 阅读全文