抽签小程序(C语言随机数),C# 抽签小程序

设计背景

设置一个Excel名单表，对名单进行随机抽取。

设计思路

使用Timer定时器，运行定时器进行名单随机滚动，停止定时器获得抽签结果

相关技术

随机数

Excel读取/导出

XML文档读写

相关类库

C1.C1Excel Excel操作相关

功能

读取Excel名单

名单随机抽签

评分功能

Excel导出功能

代码示例

导入名单

using (System.Windows.Forms.OpenFileDialog dialog = new OpenFileDialog())

{

dialog.InitialDirectory = Application.StartupPath;

dialog.Filter = "Excel文件(*.xls)|*.xls";

dialog.CheckFileExists = true;

if (dialog.ShowDialog(this) == System.Windows.Forms.DialogResult.OK)

{

this.txtList.Text = dialog.FileName;

this.dt = ImportExcel(dialog.FileName, false, false);

}

}

随机抽签

Random rd = new Random();

this.lbShow.Text = this.dt.Rows[rd.Next(1, this.dt.Rows.Count)][0].ToString();

评分导出

string apppath = Application.ExecutablePath;

apppath = apppath.Substring(0, apppath.LastIndexOf("\\"));

if (File.Exists(apppath + "\\Evaluation.xml"))

{

XmlDocument xmlDoc = new XmlDocument();

xmlDoc.Load(apppath + "\\Evaluation.xml");

XmlNodeList nodeList = xmlDoc.SelectNodes("//Evaluation//Evaluation");

DataTable dt = new DataTable();

dt.Columns.Add("姓名");

dt.Columns.Add("评分");

dt.Columns.Add("时间");

for (int i = 0; i < nodeList.Count; i++)

{

DataRow dr = dt.NewRow();

XmlElement xe = (XmlElement)nodeList[i];

dr[0] = ((XmlElement)xe.SelectNodes("//Evaluation//Name")[i]).InnerText;

dr[1] = ((XmlElement)xe.SelectNodes("//Evaluation//Points")[i]).InnerText;

dr[2] = ((XmlElement)xe.SelectNodes("//Evaluation//Time")[i]).InnerText;

dt.Rows.Add(dr);

}

ExportTo("Evaluation", "Evaluation", dt);

MessageBox.Show("导出评分表将删除评分记录，请自行保存！");

File.Delete(apppath + "\\Evaluation.xml");

}

else

{

MessageBox.Show("无评分记录！");

}

GitHub