C# 抽簽小程序

設計背景

設置一個Excel名單表，對名單進行隨機抽取。

設計思路

使用Timer定時器，運行定時器進行名單隨機滾動，停止定時器獲得抽簽結果

相關技術

• 隨機數
• Excel讀取/導出
• XML文檔讀寫

相關類庫

C1.C1Excel Excel操作相關

功能

• 讀取Excel名單
• 名單隨機抽簽
• 評分功能
• Excel導出功能

代碼示例

• 導入名單

            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);
                }
            }

• 隨機抽簽

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

• 評分導出

            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("評分");
                dt.Columns.Add("時間");

                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("導出評分表將刪除評分記錄，請自行保存！");
                File.Delete(apppath + "\\Evaluation.xml");
            }
            else
            {
                MessageBox.Show("無評分記錄！");
            }

GitHub

.NET-App/Draw/