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!");
}