frmyfxx.cs

企业短信群发系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace SMS.Forms
{
    public partial class frmYfxx : Form
    {
        private static frmYfxx yfxx;//生命一个私有变量，用来保存唯一的窗体实例
        public frmYfxx()
        {
            InitializeComponent();
        }

        //提供好一个静态方法，此方法是用来判断何时实例化窗体
        public static frmYfxx Instance()
        {
            if (yfxx == null)
                yfxx = new frmYfxx();
            return yfxx;
        }

        private void frmYfxx_FormClosing(object sender, FormClosingEventArgs e)
        {
            yfxx.Dispose(true);
            yfxx = null;
        }
    }
}