折扣金额计算

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using DevExpress.XtraEditors;

namespace Kuade.WindowsFormsApp1
{
    /// 

    /// 
    /// 

    public partial class FrmMainForm : XtraForm
    {
        /// 

        /// 构造函数
        /// 

        public FrmMainForm（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            textBox4.Text = （double.Parse（textBox1.Text） * double.Parse（textBox2.Text） * double.Parse（textBox3.Text））.ToString（）;
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-06-05 10:41  折扣金额计算\
     目录           0  2019-06-05 10:29  折扣金额计算\123\
     目录           0  2019-06-05 10:29  折扣金额计算\123\.vs\
     目录           0  2019-06-26 15:12  折扣金额计算\123\.vs\123\
     目录           0  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\
     文件       51712  2019-06-05 10:40  折扣金额计算\123\.vs\123\v15\.suo
     目录           0  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\Server\
     目录           0  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\Server\sqlite3\
     文件           0  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\Server\sqlite3\db.lock
     文件        4096  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\Server\sqlite3\storage.ide
     文件       32768  2019-06-05 10:29  折扣金额计算\123\.vs\123\v15\Server\sqlite3\storage.ide-shm
     文件     3609152  2019-06-05 10:40  折扣金额计算\123\.vs\123\v15\Server\sqlite3\storage.ide-wal
     目录           0  2019-06-26 15:13  折扣金额计算\123\.vs\123\v16\
     文件       51200  2019-06-26 15:14  折扣金额计算\123\.vs\123\v16\.suo
     目录           0  2019-06-26 15:13  折扣金额计算\123\.vs\123\v16\Server\
     目录           0  2019-06-26 15:14  折扣金额计算\123\.vs\123\v16\Server\sqlite3\
     文件           0  2019-06-26 15:13  折扣金额计算\123\.vs\123\v16\Server\sqlite3\db.lock
     文件     2289664  2019-06-26 15:14  折扣金额计算\123\.vs\123\v16\Server\sqlite3\storage.ide
     文件        1146  2019-06-05 10:29  折扣金额计算\123\123.sln
     目录           0  2019-06-05 10:29  折扣金额计算\123\Publish\
     目录           0  2019-06-26 15:13  折扣金额计算\123\Publish\WindowsFormsApp1\
     目录           0  2019-06-05 10:32  折扣金额计算\123\Publish\WindowsFormsApp1\de\
     文件    20946168  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.BonusSkins.v18.2.dll
     文件     6830840  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Data.v18.2.dll
     文件     1327500  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Data.v18.2.xml
     文件     8426232  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Images.v18.2.dll
     文件     2466552  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Office.v18.2.Core.dll
     文件       95799  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Office.v18.2.Core.xml
     文件     2966776  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Pdf.v18.2.Core.dll
     文件      324637  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Pdf.v18.2.Core.xml
     文件     4303096  2019-04-03 20:32  折扣金额计算\123\Publish\WindowsFormsApp1\DevExpress.Printing.v18.2.Core.dll
............此处省略125个文件信息