展示一下我做的第一个程序，哈哈

是一个windows服务程序，在特定的时间调用存储过程，并把查询结果输出到XML文件中。

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Diagnostics;using System.Linq;using System.ServiceProcess;using System.Text;using System.Data.SqlClient;using System.Xml;using System.IO;using System.Collections;namespace StockUpService{ public partial class StockUpService : ServiceBase { public StockUpService() { InitializeComponent(); if (!System.Diagnostics.EventLog.SourceExists("MySource")) { System.Diagnostics.EventLog.CreateEventSource( "MySource", "MyNewLog"); } eventLog1.Source = "MySource"; eventLog1.Log = "MyNewLog"; } protected override void OnStart(string[] args) { System.Timers.Timer t = new System.Timers.Timer(50000); //实例化Timer类，设置间隔时间为50000毫秒|50秒执行一次； t.Elapsed += new System.Timers.ElapsedEventHandler(runservice); //到达时间的时候执行事件； t.AutoReset = true; //设置是执行一次（false）还是一直执行(true)； t.Enabled = true; //是否执行System.Timers.Timer.Elapsed事件； } public void runservice(object source, System.Timers.ElapsedEventArgs e) { string t; t = System.DateTime.Now.Hour.ToString()+System.DateTime.Now.Minute.ToString(); if (t == "177") { readXml(); } } public static void readXml() { string classId; string filialeId; string startTime; string endTime; string companyType; int timeInterval; string aa = ""; string xmlChildNodes = ""; string dsn = "server=(local);database=keede1228;user id=sa;password=123;"; SqlConnection connection = new SqlConnection(dsn); XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load("d://StockUpConfig.xml"); XmlNode xn = xmlDoc.SelectSingleNode("stockwarning"); XmlNodeList xnl = xn.ChildNodes; XmlNode xn3 = xmlDoc.SelectSingleNode("stockwarning/goodsclass"); XmlNodeList xn3l = xn3.ChildNodes; foreach (XmlNode xnf in xnl) { XmlElement xe = (XmlElement)xnf; XmlNodeList xnf1 = xe.ChildNodes; xmlChildNodes = xmlChildNodes + xnf.InnerText + "|"; } string[] cc = xmlChildNodes.Split('|'); string outputpath; filialeId = cc[1]; companyType = cc[2]; timeInterval = Convert.ToInt16(cc[3]); outputpath = cc[4]; endTime = DateTime.Now.Date.ToShortDateString(); startTime = DateTime.Now.AddDays(-timeInterval).ToShortDateString(); string className; int po = 1; //int stockUpNameId = 0; foreach (XmlNode xn3f in xn3l) { XmlNode xn2 = xmlDoc.SelectSingleNode("stockwarning/goodsclass/group" + po); XmlNodeList xn2l = xn2.ChildNodes; XmlElement xe = (XmlElement)xn3f; className = xe.GetAttribute("classname"); po++; //stockUpNameId++; DataSet ds = new DataSet(); foreach (XmlNode xn2f in xn2l) { aa = xn2f.InnerText; connection.Open(); classId = aa; SqlCommand command = connection.CreateCommand(); command.CommandText = "P_Raifei_GetClassGoodsStockUp"; command.CommandType = CommandType.StoredProcedure; SqlParameter param1 = new SqlParameter("@ClassId", classId); SqlParameter param2 = new SqlParameter("@FilialeId", filialeId); SqlParameter param3 = new SqlParameter("@StartTime", startTime); SqlParameter param4 = new SqlParameter("@EndTime", endTime); SqlParameter param5 = new SqlParameter("@CompanyType", companyType); command.Parameters.Add(param1); command.Parameters.Add(param2); command.Parameters.Add(param3); command.Parameters.Add(param4); command.Parameters.Add(param5); SqlDataReader reader = command.ExecuteReader(CommandBehavior.CloseConnection); reader.Close(); string select = "P_Raifei_GetClassGoodsStockUp" + " " + "'" + classId + "'," + "'" + filialeId + "'," + "'" + startTime + "'," + "'" + endTime + "'," + "'" + companyType + "'"; SqlDataAdapter da = new SqlDataAdapter(select, connection); int abc = 1; string tbname; string stockUpName; stockUpName = outputpath + "StockUp" + DateTime.Now.Date.ToShortDateString() + "-" + className + ".xml"; tbname = "sp" + abc; abc++; da.Fill(ds, tbname); ds.WriteXml(stockUpName, XmlWriteMode.WriteSchema); } } connection.Close(); } protected override void OnStop() { eventLog1.WriteEntry("In onStop."); } protected override void OnContinue() { eventLog1.WriteEntry("In OnContinue."); } }}